USAP-DC

{"dp_type": "Dataset", "free_text": "Magnetic"}

[{"awards": "9319379 Blankenship, Donald", "bounds_geometry": ["POLYGON((150 -81.9,152.1 -81.9,154.2 -81.9,156.3 -81.9,158.4 -81.9,160.5 -81.9,162.6 -81.9,164.7 -81.9,166.8 -81.9,168.9 -81.9,171 -81.9,171 -82.06,171 -82.22,171 -82.38000000000001,171 -82.54,171 -82.7,171 -82.86,171 -83.02,171 -83.18,171 -83.34,171 -83.5,168.9 -83.5,166.8 -83.5,164.7 -83.5,162.6 -83.5,160.5 -83.5,158.4 -83.5,156.3 -83.5,154.2 -83.5,152.1 -83.5,150 -83.5,150 -83.34,150 -83.18,150 -83.02,150 -82.86,150 -82.7,150 -82.54,150 -82.38000000000001,150 -82.22,150 -82.06,150 -81.9))"], "date_created": "Thu, 01 Sep 2022 00:00:00 GMT", "description": "The RGB survey is a single line flown up Robb Glacier. Laser altimetry, ice-penetrating radar, gravity and magnetic field intensity data were collected. This work was funded by NSF-OPP 9319379 with the project title: Collaborative Research: Contrasting Architecture and Dynamics of the Transantarctic Mountains (Pensacola-Pole Transect). Principal Investigators were D.D. Blankenship, University of Texas Institute for Geophysics, and R.E. Bell and W.R. Buck, Lamont-Doherty Earth Observatory.", "east": 171.0, "geometry": ["POINT(160.5 -82.7)"], "keywords": "Airborne Radar; Antarctica; Bed Elevation; Cryosphere; geophysics; Glaciers/Ice Sheet; Ice Surface Elevation; Ice Thickness; Robb Glacier; Transantarctic Mountains", "locations": "Robb Glacier; Transantarctic Mountains; Antarctica", "north": -81.9, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Blankenship, Donald D.; Bell, Robin; Buck, W. Roger; Young, Duncan A.", "project_titles": "Continuation of Activities for the Support Office for Aerogeophysical Research (SOAR)", "projects": [{"proj_uid": "p0000125", "repository": "USAP-DC", "title": "Continuation of Activities for the Support Office for Aerogeophysical Research (SOAR)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -83.5, "title": "RBG - Robb Glacier Survey", "uid": "601604", "west": 150.0}, {"awards": "1643917 Fricker, Helen", "bounds_geometry": ["POLYGON((-163.646 -84.186,-162.58715 -84.186,-161.5283 -84.186,-160.46945 -84.186,-159.4106 -84.186,-158.35175 -84.186,-157.2929 -84.186,-156.23405 -84.186,-155.1752 -84.186,-154.11635 -84.186,-153.0575 -84.186,-153.0575 -84.20871,-153.0575 -84.23142,-153.0575 -84.25413,-153.0575 -84.27684,-153.0575 -84.29955,-153.0575 -84.32226,-153.0575 -84.34497,-153.0575 -84.36768,-153.0575 -84.39039,-153.0575 -84.4131,-154.11635 -84.4131,-155.1752 -84.4131,-156.23405 -84.4131,-157.2929 -84.4131,-158.35175 -84.4131,-159.4106 -84.4131,-160.46945 -84.4131,-161.5283 -84.4131,-162.58715 -84.4131,-163.646 -84.4131,-163.646 -84.39039,-163.646 -84.36768,-163.646 -84.34497,-163.646 -84.32226,-163.646 -84.29955,-163.646 -84.27684,-163.646 -84.25413,-163.646 -84.23142,-163.646 -84.20871,-163.646 -84.186))"], "date_created": "Fri, 25 Feb 2022 00:00:00 GMT", "description": "This archive contains magnetotelluric (MT) responses estimated from MT time series data that were collected to study subglacial groundwater beneath Whillans Ice Stream, West Antarctica. Data acquisition took place during the 2018/2019 Antarctic summer field season. 27 MT stations were collected at Whillans Subglacial Lake (SLW) and 16 stations were obtained at its hypothesized downstream outlet to the ocean, Whillans Grounding Zone (WGZ). The MT responses are provided as text files in the .zmm format output by the MT data processing code, but have also been converted to the more widely used .edi text file format for convenience. All sensor orientations are listed as geomagnetic azimuths, which for this region are substantially different than the corresponding geographic azimuths.", "east": -153.0575, "geometry": ["POINT(-158.35175 -84.29955)"], "keywords": "Antarctica; Cryosphere; Glaciers/Ice Sheet; Glaciology; Ice Stream; Magnetotelluric; subglacial; Whillans Ice Stream", "locations": "Whillans Ice Stream; Antarctica", "north": -84.186, "nsf_funding_programs": "Antarctic Glaciology", "persons": "Gustafson, Chloe; Key, Kerry; Siegfried, Matthew; Fricker, Helen", "project_titles": "Mapping Antarctic Subglacial Water with Novel Electromagnetic Techniques", "projects": [{"proj_uid": "p0010300", "repository": "USAP-DC", "title": "Mapping Antarctic Subglacial Water with Novel Electromagnetic Techniques"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -84.4131, "title": "Wideband magnetotelluric responses from Whillans Ice Stream, West Antarctica", "uid": "601526", "west": -163.646}, {"awards": "1738942 Wellner, Julia", "bounds_geometry": ["POLYGON((-107.38 -74.64,-107.065 -74.64,-106.75 -74.64,-106.435 -74.64,-106.12 -74.64,-105.805 -74.64,-105.49 -74.64,-105.175 -74.64,-104.86 -74.64,-104.545 -74.64,-104.23 -74.64,-104.23 -74.683,-104.23 -74.726,-104.23 -74.769,-104.23 -74.812,-104.23 -74.855,-104.23 -74.898,-104.23 -74.941,-104.23 -74.984,-104.23 -75.027,-104.23 -75.07,-104.545 -75.07,-104.86 -75.07,-105.175 -75.07,-105.49 -75.07,-105.805 -75.07,-106.12 -75.07,-106.435 -75.07,-106.75 -75.07,-107.065 -75.07,-107.38 -75.07,-107.38 -75.027,-107.38 -74.984,-107.38 -74.941,-107.38 -74.898,-107.38 -74.855,-107.38 -74.812,-107.38 -74.769,-107.38 -74.726,-107.38 -74.683,-107.38 -74.64))"], "date_created": "Thu, 27 Jan 2022 00:00:00 GMT", "description": "This dataset contains measurements from grain-size, x-ray fluorescence (XRF), and physical properties (including magnetic susceptibility, water content, and shear strength) analyses of five sediment cores collected offshore Thwaites Glacier during cruises NBP19-02 (cores KC04, KC08, and KC23) and NBP20-02 (cores KC33 and KC67). We estimate the cores, which are between 213.5 and 297.5 cm in length, reflect deposition during the last ~10 kyr, consistent with published constraints of deglaciation of this region. Data are organized in Microsoft Excel spreadsheets and core locations are provided in a PDF.", "east": -104.23, "geometry": ["POINT(-105.805 -74.855)"], "keywords": "Antarctica; Chemistry:Sediment; Cryosphere; Glaciomarine Sediment; Grain Size; Magnetic Susceptibility; Marine Geoscience; Marine Sediments; NBP1902; NBP2002; Physical Properties; R/V Nathaniel B. Palmer; Sediment Core Data; Thwaites Glacier; Trace Elements; XRF", "locations": "Thwaites Glacier; Antarctica", "north": -74.64, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Lepp, Allison", "project_titles": "NSF-NERC: THwaites Offshore Research (THOR)", "projects": [{"proj_uid": "p0010062", "repository": "USAP-DC", "title": "NSF-NERC: THwaites Offshore Research (THOR)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "Thwaites (ITGC)", "south": -75.07, "title": "Physical and geochemical data from five sediment cores collected offshore Thwaites Glacier", "uid": "601514", "west": -107.38}, {"awards": "1433140 Domack, Eugene; 0732625 Leventer, Amy", "bounds_geometry": ["POLYGON((-69 -58,-67.7 -58,-66.4 -58,-65.1 -58,-63.8 -58,-62.5 -58,-61.2 -58,-59.9 -58,-58.6 -58,-57.3 -58,-56 -58,-56 -59,-56 -60,-56 -61,-56 -62,-56 -63,-56 -64,-56 -65,-56 -66,-56 -67,-56 -68,-57.3 -68,-58.6 -68,-59.9 -68,-61.2 -68,-62.5 -68,-63.8 -68,-65.1 -68,-66.4 -68,-67.7 -68,-69 -68,-69 -67,-69 -66,-69 -65,-69 -64,-69 -63,-69 -62,-69 -61,-69 -60,-69 -59,-69 -58))"], "date_created": "Mon, 15 Nov 2021 00:00:00 GMT", "description": "This data set contains an age vs depth model and measurements of magnetic susceptibility, benthic foraminifera Bulimina aculeata d18O and d13C, bulk sediment GDGT data, and diatom assemblage data from USAP LMG13-11 JKC-1 sediment core (0-100 cm) archived at the Oregon State University ACC repository. All stable isotope and GDGT measurements were made at the University of South Florida College of Marine Science. Diatom assemblages were counted at Colgate University. The data set includes all replicate measurements. Details of the entire data set and all relevant methods are provided in Browne et al (submitted, 2021)", "east": -56.0, "geometry": ["POINT(-62.5 -63)"], "keywords": "Antarctica; Antarctic Peninsula; Cryosphere; Delta 13C; Delta 18O; Paleoceanography; Temperature", "locations": "Antarctic Peninsula; Antarctica", "north": -58.0, "nsf_funding_programs": "Antarctic Integrated System Science; Antarctic Integrated System Science", "persons": "Shevenell, Amelia", "project_titles": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans", "projects": [{"proj_uid": "p0000101", "repository": "USAP-DC", "title": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "LARISSA", "south": -68.0, "title": "LMG13-11 JKC-1 Paleoceanographic data", "uid": "601485", "west": -69.0}, {"awards": "1443690 Young, Duncan", "bounds_geometry": ["POLYGON((-180 -86,-144 -86,-108 -86,-72 -86,-36 -86,0 -86,36 -86,72 -86,108 -86,144 -86,180 -86,180 -86.4,180 -86.8,180 -87.2,180 -87.6,180 -88,180 -88.4,180 -88.8,180 -89.2,180 -89.6,180 -90,144 -90,108 -90,72 -90,36 -90,0 -90,-36 -90,-72 -90,-108 -90,-144 -90,-180 -90,-180 -89.6,-180 -89.2,-180 -88.8,-180 -88.4,-180 -88,-180 -87.6,-180 -87.2,-180 -86.8,-180 -86.4,-180 -86))"], "date_created": "Thu, 08 Jul 2021 00:00:00 GMT", "description": "Gravity and magnetics data collected by PRIC Basler SnowEagle 601 over Titan Dome, as part of the ICECAP project and SPICECAP in particular.", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "Antarctica; Cryosphere; ICECAP; Titan Dome", "locations": "Titan Dome; Antarctica", "north": -86.0, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Greenbaum, Jamin; Young, Duncan A.; Blankenship, Donald D.; Jingxue, Guo; Bo, Sun", "project_titles": "Collaborative Research: Southern Plateau Ice-sheet Characterization and Evolution of the Central Antarctic Plate (SPICECAP)", "projects": [{"proj_uid": "p0010115", "repository": "USAP-DC", "title": "Collaborative Research: Southern Plateau Ice-sheet Characterization and Evolution of the Central Antarctic Plate (SPICECAP)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "Airborne potential fields data from Titan Dome, Antarctica", "uid": "601461", "west": -180.0}, {"awards": "1644187 Tulaczyk, Slawek", "bounds_geometry": ["POLYGON((161 -76.9,161.75 -76.9,162.5 -76.9,163.25 -76.9,164 -76.9,164.75 -76.9,165.5 -76.9,166.25 -76.9,167 -76.9,167.75 -76.9,168.5 -76.9,168.5 -77.04,168.5 -77.18,168.5 -77.32,168.5 -77.46,168.5 -77.6,168.5 -77.74,168.5 -77.88,168.5 -78.02,168.5 -78.16,168.5 -78.3,167.75 -78.3,167 -78.3,166.25 -78.3,165.5 -78.3,164.75 -78.3,164 -78.3,163.25 -78.3,162.5 -78.3,161.75 -78.3,161 -78.3,161 -78.16,161 -78.02,161 -77.88,161 -77.74,161 -77.6,161 -77.46,161 -77.32,161 -77.18,161 -77.04,161 -76.9))"], "date_created": "Sat, 12 Sep 2020 00:00:00 GMT", "description": " The ANTAEM survey was carried out in the period November 12th to 28th, 2018, with the SkyTEM 312 system. Twenty-one missions (flights) were conducted over 11 production days of helicopter service, resulting in a total of approximately ~3400 line km of data. The SkyTEM system records data from take-off until landing resulting in multiple lines converging to the landing pads in McMurdo and at Marble Point. The production without overlapping lines adds up to approximately 2900 line km. The flight speed was approximately 120 km/h at a target flight altitude of ~50 m (sensor height), but the actual sensor height varies depending on the terrain. The surveys were carried out with a Bell 212 helicopter, which carried the SkyTEM sensor as a sling load. The SkyTEM system was configured in a standard two-moment setup (low moment, LM and high moment, HM). Areas with extremely resistive dry and/or frozen sediment/bedrock, and glacier ice often produce EM-signals with amplitudes below the detection level of the system. Data from these low signal environments cannot be inverted into resistivity models. Data with strong induced polarization effects cannot be inverted for resistivity either. These data were discharged in this standard data delivery. \r\n The EM-data and inversion result (resistivity models) are delivered in the SkyTEM2018_dat.xyz and SkyTEM2018_inv.xyz files respectably. The RECORD number in the two files links data and model together. EM-data and data uncertainty for data entering inversion. Info stated in file Header: NAN value, Data unit, Coordinate system, Gate times. The SkyTEM system uses at High-Low moment data recording cycle, therefore only a subset of the total 40 time gates are preset for each moment. The standard lateral constraints inversion (LCI), delivered in the SkyTEM2018_inv.xyz file, was carried out with a smooth 30 layered resistivity model discretized to a depth of 500 m. A depth of investigation (DOI) was estimated for each resistivity model.\r\n", "east": 168.5, "geometry": ["POINT(164.75 -77.6)"], "keywords": "Antarctica; Cryosphere; Dry Valleys; Hydrology; Ice Shelf; McMurdo; Permafrost", "locations": "McMurdo; Dry Valleys; Antarctica", "north": -76.9, "nsf_funding_programs": "Antarctic Integrated System Science", "persons": "Tulaczyk, Slawek", "project_titles": "Collaborative Research: Antarctic Airborne ElectroMagnetics (ANTAEM) - Revealing Subsurface Water in Coastal Antarctica", "projects": [{"proj_uid": "p0010129", "repository": "USAP-DC", "title": "Collaborative Research: Antarctic Airborne ElectroMagnetics (ANTAEM) - Revealing Subsurface Water in Coastal Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -78.3, "title": "ANTAEM project airborne EM resistivity data from McMurdo Region", "uid": "601373", "west": 161.0}, {"awards": "1443690 Young, Duncan", "bounds_geometry": ["POLYGON((110 -68,113 -68,116 -68,119 -68,122 -68,125 -68,128 -68,131 -68,134 -68,137 -68,140 -68,140 -68.7,140 -69.4,140 -70.1,140 -70.8,140 -71.5,140 -72.2,140 -72.9,140 -73.6,140 -74.3,140 -75,137 -75,134 -75,131 -75,128 -75,125 -75,122 -75,119 -75,116 -75,113 -75,110 -75,110 -74.3,110 -73.6,110 -72.9,110 -72.2,110 -71.5,110 -70.8,110 -70.1,110 -69.4,110 -68.7,110 -68))"], "date_created": "Tue, 07 Jul 2020 00:00:00 GMT", "description": "These aerogeophysical data were collected during the seventh ICECAP field season in 2015-16, and interpreted as part of the SPICECAP project. They consist of 7 survey flights using a BT-67 Basler and the ICECAP aergeophysical suite. The flights were based out of Australia\u0027s Casey Station and France/Italy\u0027s Concordia Station in East Antarctica, as part of a focused survey of the \u0027Little Dome C\u0027, a region with a suspected 1.5 Ma ice core record. The Level 2 data here consist of ice thickness, bed elevation and surface and bed reflectivity data, bed specularity content data, unleveled magnetic anomaly data, unleveled gravity anomaly data, and laser altimetry. Formats are self documented text files parallel those used by ICECAP (found in the Operation IceBridge archive at the National Snow and Ice Data Center), GIMBLE (found at USAP-DC), EAGLE-ICECAPII (found at the Australian Antarctic Data Center) and David Glacier (found on Zenodo.org), with summary maps of included data in PNG format.", "east": 140.0, "geometry": ["POINT(125 -71.5)"], "keywords": "Aerogeophysics; Antarctica; Bed Elevation; Bed Reflectivity; Cryosphere; EPICA Dome C; Ice Thickness", "locations": "EPICA Dome C; Antarctica", "north": -68.0, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Young, Duncan A.; Roberts, Jason; Blankenship, Donald D.; van Ommen, Tas; Richter, Thomas; Greenbaum, Jamin; Cavitte, Marie G. P; Beem, Lucas H.; Quartini, Enrica; Tozer, Carly; Ng, Gregory; Habbal, Feras; Kempf, Scott D.; Ritz, Catherine", "project_titles": "Collaborative Research: Southern Plateau Ice-sheet Characterization and Evolution of the Central Antarctic Plate (SPICECAP)", "projects": [{"proj_uid": "p0010115", "repository": "USAP-DC", "title": "Collaborative Research: Southern Plateau Ice-sheet Characterization and Evolution of the Central Antarctic Plate (SPICECAP)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "Dome C Ice Core", "south": -75.0, "title": "ICECAP: High resolution survey of the Little Dome C region in support of the IPICS Old Ice goal", "uid": "601355", "west": 110.0}, {"awards": "9911617 Blankenship, Donald; 9978236 Bell, Robin", "bounds_geometry": ["POLYGON((101.5 -75.5,102.15 -75.5,102.8 -75.5,103.45 -75.5,104.1 -75.5,104.75 -75.5,105.4 -75.5,106.05 -75.5,106.7 -75.5,107.35 -75.5,108 -75.5,108 -75.85,108 -76.2,108 -76.55,108 -76.9,108 -77.25,108 -77.6,108 -77.95,108 -78.3,108 -78.65,108 -79,107.35 -79,106.7 -79,106.05 -79,105.4 -79,104.75 -79,104.1 -79,103.45 -79,102.8 -79,102.15 -79,101.5 -79,101.5 -78.65,101.5 -78.3,101.5 -77.95,101.5 -77.6,101.5 -77.25,101.5 -76.9,101.5 -76.55,101.5 -76.2,101.5 -75.85,101.5 -75.5))"], "date_created": "Tue, 28 Apr 2020 00:00:00 GMT", "description": "Processed Magnetometer Data acquired during the SOAR Twin Otter expedition SOAR-LVS (2000)\r\nThis data set was acquired with a Magnetometer during SOAR Twin Otter expedition SOAR-LVS conducted in 2000 (Chief Scientist: Dr. Robin Bell; Investigator(s): Dr. Robin Bell and Dr. Michael Studinger). These data files are of ASCII format and include IGRF Anomaly Magnetic data and were processed after data collection. Data were acquired as part of the project(s): SOAR-Lake Vostok Survey (LVS) and Understanding the Boundary Conditions of the Lake Vostok Environment: A Site Survey for Future Work", "east": 108.0, "geometry": ["POINT(104.75 -77.25)"], "keywords": "Airborne Magnetic; Airplane; Antarctica; Cryosphere; East Antarctica; Glaciers/Ice Sheet; Lake Vostok; Magnetic; Magnetic Anomaly; Magnetometer; Potential Field; SOAR; Solid Earth", "locations": "East Antarctica; Lake Vostok; Antarctica", "north": -75.5, "nsf_funding_programs": "Antarctic Earth Sciences; Antarctic Earth Sciences", "persons": "Studinger, Michael S.; Bell, Robin", "project_titles": "Continuation of Activities for the Support Office for Aerogeophysical Research (SOAR); Understanding the Boundary Conditions of the Lake Vostok Environment: A Site Survey for Future Work\r\n", "projects": [{"proj_uid": "p0000125", "repository": "USAP-DC", "title": "Continuation of Activities for the Support Office for Aerogeophysical Research (SOAR)"}, {"proj_uid": "p0010097", "repository": "USAP-DC", "title": "Understanding the Boundary Conditions of the Lake Vostok Environment: A Site Survey for Future Work\r\n"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -79.0, "title": "SOAR-Lake Vostok survey magnetic anomaly data", "uid": "601296", "west": 101.5}, {"awards": "1246378 Shevenell, Amelia", "bounds_geometry": ["POLYGON((70 -68,70.5 -68,71 -68,71.5 -68,72 -68,72.5 -68,73 -68,73.5 -68,74 -68,74.5 -68,75 -68,75 -68.2,75 -68.4,75 -68.6,75 -68.8,75 -69,75 -69.2,75 -69.4,75 -69.6,75 -69.8,75 -70,74.5 -70,74 -70,73.5 -70,73 -70,72.5 -70,72 -70,71.5 -70,71 -70,70.5 -70,70 -70,70 -69.8,70 -69.6,70 -69.4,70 -69.2,70 -69,70 -68.8,70 -68.6,70 -68.4,70 -68.2,70 -68))"], "date_created": "Fri, 10 May 2019 00:00:00 GMT", "description": "This dataset contains 14C data, magnetic susceptibility, relative grain size percentages, 10Be", "east": 75.0, "geometry": ["POINT(72.5 -69)"], "keywords": "Antarctica; Be-10; Cryosphere; Glaciers/Ice Sheet; Grain Size; Late Quaternary; Magnetic Susceptibility; Mass Spectrometry; NBP0101; Paleoenvironments; Prydz Bay; Radiocarbon; R/V Nathaniel B. Palmer; Sediment; Sediment Core; Sediment Core Data", "locations": "Prydz Bay; Antarctica", "north": -68.0, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Shevenell, Amelia", "project_titles": "Late Quaternary Evolution of the Lambert Glacier/Amery Ice Shelf System, Prydz Bay, Antarctica", "projects": [{"proj_uid": "p0000381", "repository": "USAP-DC", "title": "Late Quaternary Evolution of the Lambert Glacier/Amery Ice Shelf System, Prydz Bay, Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -70.0, "title": "Geochemical and sedimentologic data from NBP01-01 JPC-34", "uid": "601180", "west": 70.0}, {"awards": "1341729 Kirschvink, Joseph", "bounds_geometry": ["POLYGON((-58.9 -63.5,-58.63 -63.5,-58.36 -63.5,-58.09 -63.5,-57.82 -63.5,-57.55 -63.5,-57.28 -63.5,-57.01 -63.5,-56.74 -63.5,-56.47 -63.5,-56.2 -63.5,-56.2 -63.62,-56.2 -63.74,-56.2 -63.86,-56.2 -63.98,-56.2 -64.1,-56.2 -64.22,-56.2 -64.34,-56.2 -64.46,-56.2 -64.58,-56.2 -64.7,-56.47 -64.7,-56.74 -64.7,-57.01 -64.7,-57.28 -64.7,-57.55 -64.7,-57.82 -64.7,-58.09 -64.7,-58.36 -64.7,-58.63 -64.7,-58.9 -64.7,-58.9 -64.58,-58.9 -64.46,-58.9 -64.34,-58.9 -64.22,-58.9 -64.1,-58.9 -63.98,-58.9 -63.86,-58.9 -63.74,-58.9 -63.62,-58.9 -63.5))"], "date_created": "Fri, 27 Apr 2018 00:00:00 GMT", "description": "", "east": -56.2, "geometry": ["POINT(-57.55 -64.1)"], "keywords": "Antarctica; Cryosphere; Geochronology; Geology/Geophysics - Other; Glaciology; James Ross Basin; Marine Geoscience; Marine Sediments", "locations": "James Ross Basin; Antarctica", "north": -63.5, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Skinner, Steven; Kirschvink, Joseph", "project_titles": "Paleomagnetism and Magnetostratigraphy of the James Ross Basin, Antarctica", "projects": [{"proj_uid": "p0000276", "repository": "USAP-DC", "title": "Paleomagnetism and Magnetostratigraphy of the James Ross Basin, Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.7, "title": "2016 Paleomagnetic samples from the James Ross Basin, Antarctica", "uid": "601094", "west": -58.9}, {"awards": "0943466 Hawley, Robert", "bounds_geometry": ["POLYGON((-163 -79,-162.8 -79,-162.6 -79,-162.4 -79,-162.2 -79,-162 -79,-161.8 -79,-161.6 -79,-161.4 -79,-161.2 -79,-161 -79,-161 -79.05,-161 -79.1,-161 -79.15,-161 -79.2,-161 -79.25,-161 -79.3,-161 -79.35,-161 -79.4,-161 -79.45,-161 -79.5,-161.2 -79.5,-161.4 -79.5,-161.6 -79.5,-161.8 -79.5,-162 -79.5,-162.2 -79.5,-162.4 -79.5,-162.6 -79.5,-162.8 -79.5,-163 -79.5,-163 -79.45,-163 -79.4,-163 -79.35,-163 -79.3,-163 -79.25,-163 -79.2,-163 -79.15,-163 -79.1,-163 -79.05,-163 -79))"], "date_created": "Tue, 13 Feb 2018 00:00:00 GMT", "description": "A Borehole Optical Televiewer (OPTV) uses a conical mirror and scanning electronics to record a continuous 360-degree image of the borehole wall. An inclinometer and magnetometer allow the image to be \u0027unwrapped\u0027 and resented as a rectangular image, which shows the visible features of the wall oriented to magnetic north. This dataset includes both the raw bitmap (bmp) image data from the televiewer, as well as proprietary WellCad format (wcl) files. The WellCad format files contain the inclinometry, orientation, and temperature data in addition to the imagery data. Wellcad files can be viewed with a free wellcad file reader available from https://www.alt.lu/downloads.htm. This dataset includes OPTV logs from each of two seasons, November 2013 and 2014. The logs are of the 760 m deep hole drilled by the RICE project, a NZ-USA partnership.", "east": -161.0, "geometry": ["POINT(-162 -79.25)"], "keywords": "Antarctica; Cryosphere; Glaciers/Ice Sheet; Glaciology; Roosevelt Island; Snow/Ice", "locations": "Roosevelt Island; Antarctica", "north": -79.0, "nsf_funding_programs": "Antarctic Earth Sciences; Antarctic Glaciology", "persons": "Hawley, Robert L.; Clemens-Sewall, David", "project_titles": "Collaborative Research: Deglaciation of the Ross Sea Embayment - constraints from Roosevelt Island", "projects": [{"proj_uid": "p0000272", "repository": "USAP-DC", "title": "Collaborative Research: Deglaciation of the Ross Sea Embayment - constraints from Roosevelt Island"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -79.5, "title": "Roosevelt Island Borehole Optical Televiewer logs", "uid": "601086", "west": -163.0}, {"awards": "1344349 Tulaczyk, Slawek", "bounds_geometry": ["POLYGON((161.6 -77.4,162.14 -77.4,162.68 -77.4,163.22 -77.4,163.76 -77.4,164.3 -77.4,164.84 -77.4,165.38 -77.4,165.92 -77.4,166.46 -77.4,167 -77.4,167 -77.437,167 -77.474,167 -77.511,167 -77.548,167 -77.585,167 -77.622,167 -77.659,167 -77.696,167 -77.733,167 -77.77,166.46 -77.77,165.92 -77.77,165.38 -77.77,164.84 -77.77,164.3 -77.77,163.76 -77.77,163.22 -77.77,162.68 -77.77,162.14 -77.77,161.6 -77.77,161.6 -77.733,161.6 -77.696,161.6 -77.659,161.6 -77.622,161.6 -77.585,161.6 -77.548,161.6 -77.511,161.6 -77.474,161.6 -77.437,161.6 -77.4))"], "date_created": "Tue, 05 Dec 2017 00:00:00 GMT", "description": "This dataset contains raw TEM data and inverted electrical resistivity data. The raw data were collected using a helicopter-borne sensor in November/December 2011 in collaboration with Drs. Esben Auken (University of Aarhus), Jill Mikucki (University of Tennessee - Knoxville) and Ross Virginia (Dartmouth College). Details on data collection and processing are provided in Mikucki et al. (2015) and Foley et al. (2015). We request that these two references be cited in any future publications based on the archived dataset. ", "east": 167.0, "geometry": ["POINT(164.3 -77.585)"], "keywords": "Antarctica; Cryosphere; Dry Valleys; Electromagnetic data; Geology/Geophysics - Other; Glaciers/Ice Sheet; Glaciology; McMurdo", "locations": "Dry Valleys; McMurdo; Antarctica", "north": -77.4, "nsf_funding_programs": "Antarctic Integrated System Science; Antarctic Earth Sciences", "persons": "Tulaczyk, Slawek", "project_titles": "Collaborative Research: EAGER: Processing, Interpretation and Dissemination of the Proof-of-Concept Transient Electromagnetic Survey of the McMurdo Dry Valleys Region", "projects": [{"proj_uid": "p0000329", "repository": "USAP-DC", "title": "Collaborative Research: EAGER: Processing, Interpretation and Dissemination of the Proof-of-Concept Transient Electromagnetic Survey of the McMurdo Dry Valleys Region"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -77.77, "title": "2011 Time-domain ElectroMagnetics data for McMurdo Dry Valleys", "uid": "601071", "west": 161.6}, {"awards": "1043761 Young, Duncan", "bounds_geometry": ["POLYGON((-156 -74.5,-151.4 -74.5,-146.8 -74.5,-142.2 -74.5,-137.6 -74.5,-133 -74.5,-128.4 -74.5,-123.8 -74.5,-119.2 -74.5,-114.6 -74.5,-110 -74.5,-110 -75.05,-110 -75.6,-110 -76.15,-110 -76.7,-110 -77.25,-110 -77.8,-110 -78.35,-110 -78.9,-110 -79.45,-110 -80,-114.6 -80,-119.2 -80,-123.8 -80,-128.4 -80,-133 -80,-137.6 -80,-142.2 -80,-146.8 -80,-151.4 -80,-156 -80,-156 -79.45,-156 -78.9,-156 -78.35,-156 -77.8,-156 -77.25,-156 -76.7,-156 -76.15,-156 -75.6,-156 -75.05,-156 -74.5))"], "date_created": "Mon, 20 Feb 2017 00:00:00 GMT", "description": "GIMBLE was proposed as the first systematic aerogeophysical investigation of the subglacial massif underlying central Marie Byrd Land. Aerogeophysically configured Baslers conducted 14 flights from Byrd Surface Camp and WAIS Divide Camp over two field seasons (January 2013 and December 2014). Airborne ice penetrating radar, gravity and magnetics were the primary datasets collected. Level 2 data represent geolocated geophysical properties (e.g ice thickness), derived from Level 1B measurements (e.g. radar echo delay). Dataset structures are based on those used for Operation Ice Bridge, and are line based data in ASCII space delimited .txt files, with a header delimited by leading \"#\" characters documenting column assignment and metadata. Georefering data is contained in .met files. GIMBLE.GGCMG2 contains line based data relating to gravity disturbance, processed from raw acceleration and position data by propriety software from Gravimetric Technologies and Novatel. The raw data was obtained a Canadian MicroGravity GT-1A gravimeter in ICP5, and a GT-2A gravimeter in ICP6. Data reduction was led by T. Richter.", "east": -110.0, "geometry": ["POINT(-133 -77.25)"], "keywords": "Antarctica; Cryosphere; Gimble; Glaciers/Ice Sheet; Gravity; Marie Byrd Land; Navigation; Potential Field; Solid Earth", "locations": "Marie Byrd Land; Antarctica", "north": -74.5, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Young, Duncan A.; Holt, John W.; Blankenship, Donald D.", "project_titles": "Geophysical Investigations of Marie Byrd Land Lithospheric Evolution (GIMBLE)", "projects": [{"proj_uid": "p0000435", "repository": "USAP-DC", "title": "Geophysical Investigations of Marie Byrd Land Lithospheric Evolution (GIMBLE)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -80.0, "title": "Gravity disturbance data over central Marie Byrd Land, West Antarctica (GIMBLE.GGCMG2)", "uid": "601003", "west": -156.0}, {"awards": "1043761 Young, Duncan", "bounds_geometry": ["POLYGON((-156 -74.5,-151.4 -74.5,-146.8 -74.5,-142.2 -74.5,-137.6 -74.5,-133 -74.5,-128.4 -74.5,-123.8 -74.5,-119.2 -74.5,-114.6 -74.5,-110 -74.5,-110 -75.05,-110 -75.6,-110 -76.15,-110 -76.7,-110 -77.25,-110 -77.8,-110 -78.35,-110 -78.9,-110 -79.45,-110 -80,-114.6 -80,-119.2 -80,-123.8 -80,-128.4 -80,-133 -80,-137.6 -80,-142.2 -80,-146.8 -80,-151.4 -80,-156 -80,-156 -79.45,-156 -78.9,-156 -78.35,-156 -77.8,-156 -77.25,-156 -76.7,-156 -76.15,-156 -75.6,-156 -75.05,-156 -74.5))"], "date_created": "Mon, 20 Feb 2017 00:00:00 GMT", "description": "GIMBLE was proposed as the first systematic aerogeophysical investigation of the subglacial massif underlying central Marie Byrd Land. Aerogeophysically configured Baslers conducted 14 flights from Byrd Surface Camp and WAIS Divide Camp over two field seasons (January 2013 and December 2014). Airborne ice penetrating radar, gravity and magnetics were the primary datasets collected. Level 2 data represent geolocated geophysical properties (e.g ice thickness), derived from Level 1B measurements (e.g. radar echo delay). Dataset structures are based on those used for Operation Ice Bridge, and are line based data in ASCII space delimited .txt files, with a header delimited by leading \"#\" characters documenting column assignment and metadata. Georefering data is contained in .met files. GIMBLE.GMGEO2 contains line based data (in ASCII space delimited txt files) relating to magnetic anomaly. The raw data was obtained by a tail mounted Geometrics G-823A magnetometer. No heading correction, cross over correction, continuation or base correction have been applied. Data with significant geomagnetic activity (restricted to 07-Dec-2014 and 23-Dec-2014) were removed.", "east": -110.0, "geometry": ["POINT(-133 -77.25)"], "keywords": "Antarctica; Cryosphere; Gimble; Glaciers/Ice Sheet; Magnetic; Marie Byrd Land; Navigation; Potential Field; Solid Earth", "locations": "Marie Byrd Land; Antarctica", "north": -74.5, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Young, Duncan A.; Holt, John W.; Blankenship, Donald D.", "project_titles": "Geophysical Investigations of Marie Byrd Land Lithospheric Evolution (GIMBLE)", "projects": [{"proj_uid": "p0000435", "repository": "USAP-DC", "title": "Geophysical Investigations of Marie Byrd Land Lithospheric Evolution (GIMBLE)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -80.0, "title": "Magnetic anomaly data over central Marie Byrd Land, West Antarctica (GIMBLE.GMGEO2)", "uid": "601002", "west": -156.0}, {"awards": "1043761 Young, Duncan", "bounds_geometry": ["POLYGON((-156 -74.5,-151.4 -74.5,-146.8 -74.5,-142.2 -74.5,-137.6 -74.5,-133 -74.5,-128.4 -74.5,-123.8 -74.5,-119.2 -74.5,-114.6 -74.5,-110 -74.5,-110 -75.05,-110 -75.6,-110 -76.15,-110 -76.7,-110 -77.25,-110 -77.8,-110 -78.35,-110 -78.9,-110 -79.45,-110 -80,-114.6 -80,-119.2 -80,-123.8 -80,-128.4 -80,-133 -80,-137.6 -80,-142.2 -80,-146.8 -80,-151.4 -80,-156 -80,-156 -79.45,-156 -78.9,-156 -78.35,-156 -77.8,-156 -77.25,-156 -76.7,-156 -76.15,-156 -75.6,-156 -75.05,-156 -74.5))"], "date_created": "Mon, 20 Feb 2017 00:00:00 GMT", "description": "GIMBLE was proposed as the first systematic aerogeophysical investigation of the subglacial massif underlying central Marie Byrd Land. Aerogeophysically configured Baslers conducted 14 flights from Byrd Surface Camp and WAIS Divide Camp over two field seasons (January 2013 and December 2014). Airborne ice penetrating radar, gravity and magnetics were the primary datasets collected. Level 2 data represent geolocated geophysical properties (e.g ice thickness), derived from Level 1B measurements (e.g. radar echo delay). Dataset structures are based on those used for Operation Ice Bridge, and are line based data in ASCII space delimited .txt files, with a header delimited by leading \"#\" characters documenting column assignment and metadata. Georefering data is contained in .met files. GIMBLE.GR2HI2 contains line based data (in ASCII space delimited txt files) relating to ice thickness, bed elevation and bed reflectivity, extracted from 1-D focused radargrams by semiautomatic interpretation. Data was acquired using HiCARS2 in ICP5, and MARFA in ICP6. Some data loss occurred in ICP6 (in particular F10,F11, and F14), limiting the lines that were focused. Data reduction was led by D. Young and S. Kempf.", "east": -110.0, "geometry": ["POINT(-133 -77.25)"], "keywords": "Airborne Radar; Antarctica; Cryosphere; Gimble; Glaciers/Ice Sheet; Glaciology; Ice Thickness; Marie Byrd Land; Navigation; Radar", "locations": "Marie Byrd Land; Antarctica", "north": -74.5, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Young, Duncan A.; Holt, John W.; Blankenship, Donald D.", "project_titles": "Geophysical Investigations of Marie Byrd Land Lithospheric Evolution (GIMBLE)", "projects": [{"proj_uid": "p0000435", "repository": "USAP-DC", "title": "Geophysical Investigations of Marie Byrd Land Lithospheric Evolution (GIMBLE)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -80.0, "title": "Ice thickness and related data over central Marie Byrd Land, West Antarctica (GIMBLE.GR2HI2)", "uid": "601001", "west": -156.0}, {"awards": "0632399 Jefferies, Stuart", "bounds_geometry": ["POLYGON((-180 -60,-144 -60,-108 -60,-72 -60,-36 -60,0 -60,36 -60,72 -60,108 -60,144 -60,180 -60,180 -63,180 -66,180 -69,180 -72,180 -75,180 -78,180 -81,180 -84,180 -87,180 -90,144 -90,108 -90,72 -90,36 -90,0 -90,-36 -90,-72 -90,-108 -90,-144 -90,-180 -90,-180 -87,-180 -84,-180 -81,-180 -78,-180 -75,-180 -72,-180 -69,-180 -66,-180 -63,-180 -60))"], "date_created": "Fri, 01 Jan 2016 00:00:00 GMT", "description": "The ultimate goal of this project is to determine the structure and dynamics of the Sun\u0027s atmosphere, assess the role of MHD waves in heating the chromosphere/corona and driving the solar wind, and better understand how the Sun\u0027s atmosphere couples to the solar interior. As the solar atmosphere is \u0027home\u0027 to many of the solar phenomena that can have a direct impact on the biosphere, including flares, coronal mass ejections, and the solar wind, the broader impact of such studies is that they will lead to an improved understanding of the Sun-Earth connection. \nUnder the current award we have developed a suite of instruments that can simultaneously image the line-of-sight Doppler velocity and longitudinal magnetic field at four heights in the solar atmosphere at high temporal cadence. The instruments use magneto-optical filters (see Cacciani, Moretti and Rodgers, Solar Physics 174, p.115, 2004) tuned to the solar absorption lines at 422 nm (Ca I), 589 nm (Na D2), 770 nm (K) and 1083 nm (He). These lines sample the solar atmosphere from the mid-photosphere to the high-chromosphere. \nA proof-of-concept run was made in the Austral summer of 2007/2008 using the Na and K versions of the instruments. Here we recorded over 40 hours of full-disk, intensity images of the Sun in the red and blue wings of the Na and K Fraunhofer lines, in both right- and left-circularly polarized light. The images were obtained at a rate of one every five seconds with a nominal spatial resolution of 4 arc-seconds. The run started at 09:44 UT on February 2, 2008 and ended at 03:30 UT on February 4, 2008.\nData Quality Assessment:\nThe temperature controls of the instrument housings were unable to fully compensate for the harse Antartic winds encountered during the observing run. This led to large (~15 C) temperature swings which adversely affected the instruments (and thus data quality) in two ways: 1) Crystals of Na and K were deposited on the magneto-optical filter windows leading to \"hot spots\" in the images. These \"hot spots\" come and go with time as the temperature changes. 2) The changing temperature caused the optical rails to contract and expand causing the final images to go in- and out-of-focus, thus reducing the resolution to greater than 4 arc-seconds. Both these effect are worse in the K data.\nDespite these problems, the intensity images can be combined to provide magnetic images that show a very high sensitivity (\u003c 5 Gauss in a 5 second integration).\nData Description:\nThe raw data are stored as a series of 1024x1024x4 FITS images. The format is: blue image (left circulary polarized light), blue image (right circularly polarized light), red image (left circulary polarized light), red image (right circularly polarized light).\nThe naming convention for the images is: Type_Instrument_Day_hour_minutes_seconds\nwhere Type is I (intensity), F (flatfield), D (dark)\n Instrument is 0 (Na), 1 (K)\n Day is the day number from the beginning of the year where January 1 is day 0\nFor example, I_0_32_12_34_40.fits is an intensity image taken with the Na instrument at 12:34.40 UT on February 2, 2008.\nNotes: \n1) The flatfield images were acquired by moving a diffuser in front of the Sun during the integration. The resulting images therefore have to be corrected for residual low-spatial frequencies due to the non-flat nature of the light source.\n2) Each FITS file header contains a variety of information on the observation, e.g.,\nF_CNTO\t: number of summed frames in each 5 second integration (*)\nFPS\t\t: Camera frame rate (Frames Per Second)\nFLIP\t: Rate at which the half-wave rotator (magnetic switch) was switched\nINT_PER\t: Integration time (in seconds)\nMOF\t\t: Temperature of magneto-optical filter cell\nWS\t\t: Temperature of wing selector cell\nTEMP_0\t: Temperature of camera 0\nTEMP_1\t: Temperature of camera 1\nTEMP_2\t: Temperature inside instrument (location 1)\nTEMP_3\t: Temperature of narrowband filter\nTEMP_5\t: Temperature of magnets surrounding MOF cell\nTEMP_6\t: Temperature inside instrument (location 2)\nTEMP_7\t: Temperature of housing for magnetic switch\n(*) This is the frame count for the camera. The number of frames in each image for the two different polarization states, is half this number.\nThe measured temperatures are only coarse measurements.\n3) Due to reflection in the final polarizing beam splitter (which separates the \"red\" and \"blue\" signals into the two cameras), the camera 1 data need to \"reversed\" along the x-axis (i.e. listed as [1024:1] instead of [1:1024])\n4) Line-of-sight velocity and magnetic field images are generated from the observed intensity images. Doppler images as (red-blue)/(red+blue), magnetic images as the difference between the Doppler images\nfor right- and left-circularly polarized light.", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "Antarctica; Cosmos; Satellite Remote Sensing; Sun", "locations": "Antarctica", "north": -60.0, "nsf_funding_programs": null, "persons": "Jefferies, Stuart M.", "project_titles": "Tomographic Imaging of the Velocity and Magnetic Fields in the Sun\u0027s Atmosphere", "projects": [{"proj_uid": "p0000526", "repository": "USAP-DC", "title": "Tomographic Imaging of the Velocity and Magnetic Fields in the Sun\u0027s Atmosphere"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "Tomographic Imaging of the Velocity and Magnetic Fields in the Sun\u0027s Atmosphere", "uid": "600152", "west": -180.0}, {"awards": "1343649 Levy, Joseph", "bounds_geometry": ["POLYGON((162.852 -77.6111,162.9893 -77.6111,163.1266 -77.6111,163.2639 -77.6111,163.4012 -77.6111,163.5385 -77.6111,163.6758 -77.6111,163.8131 -77.6111,163.9504 -77.6111,164.0877 -77.6111,164.225 -77.6111,164.225 -77.65331,164.225 -77.69552,164.225 -77.73773,164.225 -77.77994,164.225 -77.82215,164.225 -77.86436,164.225 -77.90657,164.225 -77.94878,164.225 -77.99099,164.225 -78.0332,164.0877 -78.0332,163.9504 -78.0332,163.8131 -78.0332,163.6758 -78.0332,163.5385 -78.0332,163.4012 -78.0332,163.2639 -78.0332,163.1266 -78.0332,162.9893 -78.0332,162.852 -78.0332,162.852 -77.99099,162.852 -77.94878,162.852 -77.90657,162.852 -77.86436,162.852 -77.82215,162.852 -77.77994,162.852 -77.73773,162.852 -77.69552,162.852 -77.65331,162.852 -77.6111))"], "date_created": "Thu, 01 Jan 2015 00:00:00 GMT", "description": "The PIs propose to quantify the hillslope water, solute, and carbon budgets for Taylor Valley in the McMurdo Dry Valleys, using water tracks to investigate near-surface geological processes and challenge the paradigm that shallow groundwater is minimal or non-exixtant. Water tracks are linear zones of high soil moisture that route shallow groundwater downslope in permafrost dominated soils. Four hypotheses will be tested: 1) water tracks are important pathways for water and solute transport; 2) water tracks transport more dissolved silica than streams in Taylor Valley indicating they are the primary site of chemical weathering for cold desert soils and bedrock; 3) water tracks that drain highland terrains are dominated by humidity-separated brines while water tracks that drain lowland terrains are dominated by marine aerosols; 4) water tracks are the sites of the highest terrestrial soil carbon concentrations and the strongest CO2 fluxes in Taylor Valley and their carbon content increases with soil age, while carbon flux decreases with age. To test these hypotheses the PIs will carry out a suite of field measurements supported by modeling and remote sensing. They will install shallow permafrost wells in water tracks that span the range of geological, climatological, and topographic conditions in Taylor Valley. Multifrequency electromagnetic induction sounding of the upper ~1 m of the permafrost will create the first comprehensive map of soil moisture in Taylor Valley, and will permit direct quantification of water track discharge across the valley. The carbon contents of water track soils will be measured and linked to global carbon dynamics.\n\nNon-science majors at Oregon State University will be integrated into the proposed research through a new Global Environmental Change course focusing on the scientific method in Antarctica. Three undergraduate students, members of underrepresented minorities, will be entrained in the research, will contribute to all aspects of field and laboratory science, and will present results at national meetings.\n", "east": 164.225, "geometry": ["POINT(163.5385 -77.82215)"], "keywords": "Antarctica; Chemistry:Soil; Critical Zone; Cryosphere; Dry Valleys; Permafrost; Sample/Collection Description; Well Measurements", "locations": "Dry Valleys; Antarctica", "north": -77.6111, "nsf_funding_programs": null, "persons": "Levy, Joseph", "project_titles": "Cryptic Hydrology of the McMurdo Dry Valleys: Water Track Contributions to Water and Geochemical Budgets in Taylor Valley, Antarctica", "projects": [{"proj_uid": "p0000407", "repository": "USAP-DC", "title": "Cryptic Hydrology of the McMurdo Dry Valleys: Water Track Contributions to Water and Geochemical Budgets in Taylor Valley, Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -78.0332, "title": "Cryptic Hydrology of the McMurdo Dry Valleys: Water Track Contributions to Water and Geochemical Budgets in Taylor Valley, Antarctica", "uid": "600139", "west": 162.852}, {"awards": "1303896 Kirschvink, Joseph", "bounds_geometry": ["POLYGON((-57 -63,-56.9 -63,-56.8 -63,-56.7 -63,-56.6 -63,-56.5 -63,-56.4 -63,-56.3 -63,-56.2 -63,-56.1 -63,-56 -63,-56 -63.2,-56 -63.4,-56 -63.6,-56 -63.8,-56 -64,-56 -64.2,-56 -64.4,-56 -64.6,-56 -64.8,-56 -65,-56.1 -65,-56.2 -65,-56.3 -65,-56.4 -65,-56.5 -65,-56.6 -65,-56.7 -65,-56.8 -65,-56.9 -65,-57 -65,-57 -64.8,-57 -64.6,-57 -64.4,-57 -64.2,-57 -64,-57 -63.8,-57 -63.6,-57 -63.4,-57 -63.2,-57 -63))"], "date_created": "Thu, 01 Jan 2015 00:00:00 GMT", "description": "The PI will collect samples to extend the magneto-stratigraphic record of late Cretaceous sediments of the James Ross Basin, Antarctica. RAPID support will allow him to take advantage of an invitation from the Instituto Antartico Argentino (IAA) to participate on an excursion to James Ross Island in the Antarctic Peninsula. The PI hopes to collect samples that will refine the position of several geomagnetic reversals between the end of the Cretaceous long normal Chron and the lower portion of Chron 31R. The Brandy Bay locality targeted by this expedition is the best place in the basin for calibrating the biostratigraphic position of the top of the Cretaceous Long Normal Chron, which is one of the most reliable correlation horizons in the entire Geological Time Scale.\n\nThe top of the Cretaceous long normal Chron is not properly correlated to southern hemisphere biostratigraphy. Locating this event will be a major addition to understanding geological time. This expedition will provide opportunities for an undergraduate student. This project is based on a productive collaboration with an Argentine scientist.", "east": -56.0, "geometry": ["POINT(-56.5 -64)"], "keywords": "Antarctica; Cryosphere; GPS; James Ross Basin; Sample/Collection Description; Solid Earth", "locations": "James Ross Basin; Antarctica", "north": -63.0, "nsf_funding_programs": null, "persons": "Kirschvink, Joseph", "project_titles": "Magnetostratigraphy of Cretaceous Sediments in the James Ross Island Basin, Antarctica", "projects": [{"proj_uid": "p0000419", "repository": "USAP-DC", "title": "Magnetostratigraphy of Cretaceous Sediments in the James Ross Island Basin, Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Magnetostratigraphy of Cretaceous Sediments in the James Ross Island Basin, Antarctica", "uid": "600136", "west": -57.0}, {"awards": "0838914 Wannamaker, Philip", "bounds_geometry": ["POLYGON((141.01732 -82.13,144.910279 -82.13,148.803238 -82.13,152.696197 -82.13,156.589156 -82.13,160.482115 -82.13,164.375074 -82.13,168.268033 -82.13,172.160992 -82.13,176.053951 -82.13,179.94691 -82.13,179.94691 -82.351835,179.94691 -82.57367,179.94691 -82.795505,179.94691 -83.01734,179.94691 -83.239175,179.94691 -83.46101,179.94691 -83.682845,179.94691 -83.90468,179.94691 -84.126515,179.94691 -84.34835,176.053951 -84.34835,172.160992 -84.34835,168.268033 -84.34835,164.375074 -84.34835,160.482115 -84.34835,156.589156 -84.34835,152.696197 -84.34835,148.803238 -84.34835,144.910279 -84.34835,141.01732 -84.34835,141.01732 -84.126515,141.01732 -83.90468,141.01732 -83.682845,141.01732 -83.46101,141.01732 -83.239175,141.01732 -83.01734,141.01732 -82.795505,141.01732 -82.57367,141.01732 -82.351835,141.01732 -82.13))"], "date_created": "Sun, 01 Jan 2012 00:00:00 GMT", "description": "The investigators will examine competing hypotheses for the mechanism of extension and creation of the Transantarctic Mountains, and evolution of the thermal regimes of rifted West Antarctica and stable East Antarctica using magnetotelluric (MT) profiles. Surrounded almost entirely by ocean ridges, Antarctica is a special tectonic situation because of the need to make accommodation space for rifting in the Transantarctic region. In the MT method, temporal variations in the Earth\u0027s natural electromagnetic field are used as source fields to probe the electrical resistivity structure in the depth range of 1 to 200 km, or more. Geophysical methods, such as MT, are appropriate in Antarctica because of the predominance of thick ice cover over most of the Continent and the difficult operating environment. The proposed effort will consist of approximately 50 sites over a distance approaching 500 km with a 10 km average spacing, oriented normal to the Transantarctic Mountains (TAM), in the Beardmore glacier area. High quality MT soundings will be collected over thick ice sheets using a custom electrode preamp design, updated from previous Antarctic projects. Data acquisition will take place over two field seasons. The primary goals are three-fold: to establish the location of the deeper tectonic transition between East and West Antarctica that may be offset from the physiographic transition at the surface, using deep resistivity structure distinguish between modes of extensional upwelling and magmatism that may be vertically non-uniform, depth and magnitude of quasi-layered deep crustal low resistivity, particularly below West Antarctica, will be used to estimate crustal heat flux into the ice sheet base.\n", "east": 179.94691, "geometry": ["POINT(160.482115 -83.239175)"], "keywords": "Antarctica; Magnetotelluric; Potential Field; Solid Earth; Transantarctic Mountains", "locations": "Transantarctic Mountains; Antarctica", "north": -82.13, "nsf_funding_programs": null, "persons": "Wannamaker, Philip", "project_titles": "Rift Mechanisms and Thermal Regime of the Lithosphere across Beardmore Glacier Region, Central Transantarctic Mountains, from Magnetotelluric Measurements", "projects": [{"proj_uid": "p0000247", "repository": "USAP-DC", "title": "Rift Mechanisms and Thermal Regime of the Lithosphere across Beardmore Glacier Region, Central Transantarctic Mountains, from Magnetotelluric Measurements"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -84.34835, "title": "Rift Mechanisms and Thermal Regime of the Lithosphere across Beardmore Glacier Region, Central Transantarctic Mountains, from Magnetotelluric Measurements", "uid": "600102", "west": 141.01732}, {"awards": "0537609 Gee, Jeffrey", "bounds_geometry": ["POLYGON((-52.9943 -82.6146,-52.990539 -82.6146,-52.986778 -82.6146,-52.983017 -82.6146,-52.979256 -82.6146,-52.975495 -82.6146,-52.971734 -82.6146,-52.967973 -82.6146,-52.964212 -82.6146,-52.960451 -82.6146,-52.95669 -82.6146,-52.95669 -82.615118,-52.95669 -82.615636,-52.95669 -82.616154,-52.95669 -82.616672,-52.95669 -82.61719,-52.95669 -82.617708,-52.95669 -82.618226,-52.95669 -82.618744,-52.95669 -82.619262,-52.95669 -82.61978,-52.960451 -82.61978,-52.964212 -82.61978,-52.967973 -82.61978,-52.971734 -82.61978,-52.975495 -82.61978,-52.979256 -82.61978,-52.983017 -82.61978,-52.986778 -82.61978,-52.990539 -82.61978,-52.9943 -82.61978,-52.9943 -82.619262,-52.9943 -82.618744,-52.9943 -82.618226,-52.9943 -82.617708,-52.9943 -82.61719,-52.9943 -82.616672,-52.9943 -82.616154,-52.9943 -82.615636,-52.9943 -82.615118,-52.9943 -82.6146))"], "date_created": "Sat, 01 Jan 2011 00:00:00 GMT", "description": "This project studies remnant magnetization in igneous rocks from the Dufek igneous complex, Antarctica. Its primary goal is to understand variations in the Earth\u0027s magnetic field during the Mesozoic Dipole Low (MDL), a period when the Earth\u0027s magnetic field underwent dramatic weakening and rapid reversals. This work will resolve the MDL\u0027s timing and nature, and assess connections between reversal rate, geomagnetic intensity and directional variability, and large-scale geodynamic processes. The project also includes petrologic studies to determine cooling rate effects on magnetic signatures, and understand assembly of the Dufek as an igneous body. Poorly studied, the Dufek is amongst the world\u0027s largest intrusions and its formation is connected to the break-up of Gondwana. The broader impacts of this project include graduate and undergraduate education and international collaboration with a German and Chilean IPY project.", "east": -52.95669, "geometry": ["POINT(-52.975495 -82.61719)"], "keywords": "Antarctica; Dufek Complex; Geology/Geophysics - Other; Paleomagnetism; Solid Earth", "locations": "Antarctica", "north": -82.6146, "nsf_funding_programs": null, "persons": "Gee, Jeffrey", "project_titles": "Collaborative Research: An Integrated Geomagnetic and Petrologic Study of the Dufek Complex", "projects": [{"proj_uid": "p0000510", "repository": "USAP-DC", "title": "Collaborative Research: An Integrated Geomagnetic and Petrologic Study of the Dufek Complex"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -82.61978, "title": "An Integrated Geomagnetic and Petrologic Study of the Dufek Complex", "uid": "600053", "west": -52.9943}, {"awards": "0338163 Leventer, Amy", "bounds_geometry": ["POLYGON((-70.90391 -52.35262,-68.130917 -52.35262,-65.357924 -52.35262,-62.584931 -52.35262,-59.811938 -52.35262,-57.038945 -52.35262,-54.265952 -52.35262,-51.492959 -52.35262,-48.719966 -52.35262,-45.946973 -52.35262,-43.17398 -52.35262,-43.17398 -53.75776,-43.17398 -55.1629,-43.17398 -56.56804,-43.17398 -57.97318,-43.17398 -59.37832,-43.17398 -60.78346,-43.17398 -62.1886,-43.17398 -63.59374,-43.17398 -64.99888,-43.17398 -66.40402,-45.946973 -66.40402,-48.719966 -66.40402,-51.492959 -66.40402,-54.265952 -66.40402,-57.038945 -66.40402,-59.811938 -66.40402,-62.584931 -66.40402,-65.357924 -66.40402,-68.130917 -66.40402,-70.90391 -66.40402,-70.90391 -64.99888,-70.90391 -63.59374,-70.90391 -62.1886,-70.90391 -60.78346,-70.90391 -59.37832,-70.90391 -57.97318,-70.90391 -56.56804,-70.90391 -55.1629,-70.90391 -53.75776,-70.90391 -52.35262))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "The NSF-supported research icebreaker Nathaniel B. Palmer operates year-round in support of the U.S. Antarctic Program, carrying out global change studies in biological, chemical, physical, and oceanographic disciplines. \n This data set consists of underway data from leg NBP0603 on the R/V Nathaniel B. Palmer. This leg started at Punta Arenas, Chile and ended at Punta Arenas, Chile.", "east": -43.17398, "geometry": ["POINT(-57.038945 -59.37832)"], "keywords": "ADCP Acoustic Doppler Current Profiler; Antarctic Peninsula; Biology; Biosphere; Diatom; Electromagnetic data; Flask Glacier; Foehn Winds; Larsen Ice Shelf; Marine Sediments; NBP0603; Oceans; Physical Ice Properties; R/V Nathaniel B. Palmer; Scar Inlet; Southern Ocean", "locations": "Larsen Ice Shelf; Antarctic Peninsula; Scar Inlet; Flask Glacier; Southern Ocean", "north": -52.35262, "nsf_funding_programs": null, "persons": "Domack, Eugene Walter", "project_titles": "Collaborative Research: Paleohistory of the Larsen Ice Shelf System: Phase II", "projects": [{"proj_uid": "p0000215", "repository": "USAP-DC", "title": "Collaborative Research: Paleohistory of the Larsen Ice Shelf System: Phase II"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -66.40402, "title": "R/V Nathaniel B. Palmer NBP0603 - Paleohistory of the Larsen Ice Shelf System", "uid": "600027", "west": -70.90391}, {"awards": "0840398 Mende, Stephen", "bounds_geometry": ["POLYGON((-180 -75,-144 -75,-108 -75,-72 -75,-36 -75,0 -75,36 -75,72 -75,108 -75,144 -75,180 -75,180 -76.5,180 -78,180 -79.5,180 -81,180 -82.5,180 -84,180 -85.5,180 -87,180 -88.5,180 -90,144 -90,108 -90,72 -90,36 -90,0 -90,-36 -90,-72 -90,-108 -90,-144 -90,-180 -90,-180 -88.5,-180 -87,-180 -85.5,-180 -84,-180 -82.5,-180 -81,-180 -79.5,-180 -78,-180 -76.5,-180 -75))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The PENGUIn team will continue investigating in depth a multi-scale electrodynamic system that comprises space environment of Planet Earth (geospace). Several science topics important to the space physics and aeronomy are outlines in this proposal that can be broadly categorized as the following objectives: (a) to study reconnection and waves in the southern cusp region; (b) to investigate unraveling global geomagnetic substorm signatures; (c) to understand the dayside wave-particle interactions; and (d) to observe and investigate various polar cap phenomena and neutral atmosphere dynamics. Cutting-edge science on these critical topics will be accomplished by acquiring multi-instrument data from a distributed network of autonomous observatories in Antarctica, built and deployed with the matured technological achievements. In the last several years, advances in power supply systems and Iridium data transmission for the Automatic Geophysical Observatories (AGOs) have proven effective for providing real-time geophysical data reliably. Five AGOs that span from the auroral zone to deep in the polar cap will be maintained providing a wealth of data for science analyses. Additional instrumentation as GPS-based receivers measuring total electron content in the ionosphere will be deployed at AGOs. These scientific investigations will be enriched by complementary measurements from manned stations in the Antarctic, from magnetically conjugate regions in the Arctic, and from a fleet of magnetospheric and ionospheric spacecraft. Continued reliance on students provides a broader impact to this proposed research and firmly grounds this effort in its educational mission.", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "Antarctica; Atmosphere; Keogram; Potential Field", "locations": "Antarctica", "north": -75.0, "nsf_funding_programs": null, "persons": "Frey, Harald; Mende, Stephen", "project_titles": "Collaborative Research: PENGUIn - A High-Latitude Window to Geospace Dynamics", "projects": [{"proj_uid": "p0000685", "repository": "USAP-DC", "title": "Collaborative Research: PENGUIn - A High-Latitude Window to Geospace Dynamics"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "PENGUIn - A High-Latitude Window to Geospace Dynamics", "uid": "600109", "west": -180.0}, {"awards": "0538683 Lal, Devendra", "bounds_geometry": ["POINT(-180 -90)"], "date_created": "Thu, 01 Jan 2009 00:00:00 GMT", "description": "The principal aim of this research is to determine the precise manner in which solar activity has varied in the past 1000 years. During this period, four periods of very low solar activity have been identified: Wolf (1305-1345 AD), Spoerer (1418-1540 AD), Maunder (1645-1715), and one period of high solar activity (1100-1250 A.D.) have been deduced based on available historical records of sunspot numbers and aurora. Our proposal aims to study the solar activity during the past 1000 years in detail using a new method, based on studies of polar ice, as developed earlier (Earth and Planetary Science Letters, 234, 335-349, 2005). The method is based on the fact that greater solar activity leads to production of greater magnetic fields in the heliosphere, which reduces the primary cosmic ray flux in the near Earth environment, and vice-versa. Consequently if one can measure the primary cosmic ray flux in the near Earth space, it becomes a direct measure of the solar activity. Lal et al. (Earth and Planetary Science Letters, 234, 335-349, 2005) concluded that the best way of measuring the primary cosmic ray flux would be to measure the concentration of cosmogenic in-situ produced 14C in polar ice sheets, which was discovered by Lal et al. (Nature 346, 350-352, 1990). Following this idea Lal et al. (op. cit.) measured cosmogenic in-situ produced in 19 samples from the GISP 2 core covering time range of 375-31,250 yrs B.P. Their studies showed that there were two periods of very low solar activity in this time bracket (during 8500-9500 B.P and 27,000-32,000 B.P.), and one high solar activity period during 12,000-16,000 yrs B.P. In order to provide an independent check on the veracity of the new method, we decided to apply it to the historical period, \u003c 1000 yrs B.P. The inferred Solar activities based on the study of cosmogenic in-situ produced 14C in South Pole ice samples clearly establish that there was a period of high Solar activity during 1100-1250 A.D., and a period of very low solar activity during 1416-1534 A.D, designated as the Spoerer Minimum. These results however do not confirm the proposed dates for the Dalton and the Maunder Minimum periods, predicted to be 1795-1825 A.D. and 1654-1714 A.D. respectively. Instead, our studies show that there was a long duration period of low solar activity during 1750-1860 A.D. These results make it quite clear that we should carry out more studies to fully establish the temporal behavior of the Solar activity in the past 1000 yrs.", "east": -180.0, "geometry": ["POINT(-180 -90)"], "keywords": "Antarctica; Carbon-14; Cosmos; Cryosphere; Geochemistry; Glaciers/Ice Sheet; Glaciology; Ice Core Records; Paleoclimate; solar activity; South Pole", "locations": "South Pole; Antarctica", "north": -90.0, "nsf_funding_programs": null, "persons": "Lal, Devendra", "project_titles": "Solar Activity during the Last Millennium, Estimated from Cosmogenic in-situ 14C in South Pole and GISP2 Ice Cores", "projects": [{"proj_uid": "p0000555", "repository": "USAP-DC", "title": "Solar Activity during the Last Millennium, Estimated from Cosmogenic in-situ 14C in South Pole and GISP2 Ice Cores"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "Solar activity during the last millennium, estimated from cosmogenic in-situ C14 in South Pole and GISP2 ice cores", "uid": "600058", "west": -180.0}, {"awards": "0229546 MacAyeal, Douglas", "bounds_geometry": ["POLYGON((-178 -60,-149.2 -60,-120.4 -60,-91.6 -60,-62.8 -60,-34 -60,-5.2 -60,23.6 -60,52.4 -60,81.2 -60,110 -60,110 -61.8,110 -63.6,110 -65.4,110 -67.2,110 -69,110 -70.8,110 -72.6,110 -74.4,110 -76.2,110 -78,81.2 -78,52.4 -78,23.6 -78,-5.2 -78,-34 -78,-62.8 -78,-91.6 -78,-120.4 -78,-149.2 -78,-178 -78,-178 -76.2,-178 -74.4,-178 -72.6,-178 -70.8,-178 -69,-178 -67.2,-178 -65.4,-178 -63.6,-178 -61.8,-178 -60))"], "date_created": "Mon, 20 Oct 2008 00:00:00 GMT", "description": "During 2001-2006, 6 giant icebergs (B15A, B15J, B15K, C16 and C25) adrift in the southwestern Ross Sea, Antarctica, were instrumented with global positioning system (GPS) receivers, magnetic compasses and automatic weather stations (AWS), to monitor their behavior in the near-coastal environment and to record their exit into the Southern Ocean. The GPS and AWS data were collected on a 20-minute interval, Many of the station data timeseries are continuous for periods of up to 7 years, with icebergs C16 and B15J having the longest records.\n\nThe data is considered useful for examining the processes of iceberg drift (and other behaviors) on time scales that are shorter than what is possible through satellite image iceberg tracking. Data are available in comma-delimited ASCII format and Matlab native mat files.", "east": 110.0, "geometry": ["POINT(-34 -69)"], "keywords": "AWS; Cryosphere; Glaciology; GPS; Iceberg; Meteorology; Oceans; Ross Sea; Sea Ice; Southern Ocean; WeatherStation", "locations": "Ross Sea; Southern Ocean", "north": -60.0, "nsf_funding_programs": "Antarctic Glaciology", "persons": "Okal, Emile; Aster, Richard; Bassis, Jeremy; MacAyeal, Douglas", "project_titles": "Collaborative Research of Earth\u0027s Largest Icebergs", "projects": [{"proj_uid": "p0000117", "repository": "USAP-DC", "title": "Collaborative Research of Earth\u0027s Largest Icebergs"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -78.0, "title": "Giant Icebergs of the Ross Sea, in situ Drift and Weather Measurements, Antarctica", "uid": "609350", "west": -178.0}, {"awards": "0636899 Mende, Stephen", "bounds_geometry": null, "date_created": "Tue, 01 Jan 2008 00:00:00 GMT", "description": "Auroral protons are not energized by electric fields directly above the auroral atmosphere and therefore they are a much better diagnostic of processes deep in the magnetosphere. It has been shown from measurements from space by the IMAGE spacecraft that the dayside hydrogen emission is directly related to dayside reconnection processes. A four channel all-sky images had been operating at South Pole during 2004-2007 to observe auroral features in specific wavelengths channels that allowed a quantitative investigation of proton aurora. This was accomplished by measuring the Hydrogen Balmer beta line at 486.1 nm and by monitoring another wavelength band for subtracting non proton produced background emissions. South Pole allows these measurements because of the 24 hour darkness and favorable conditions even on the dayside. To increase the scientific return it was also attempted to measure the Doppler shift of the hydrogen emissions because that provides diagnostics regarding the energy of the protons. Thus the proton camera measured 3 wavelength bands simultaneously in the vicinity of the Balmer beta line to provide the line intensity near zero Doppler shift, at a substantial Doppler shift and a third channel for background. \n\nThe 4-channel all-sky camera at South Pole was modified in 2008 in order to observe several types of auroras, and to distinguish the cusp reconnection aurora from the normal plasma sheet precipitation. The camera simultaneously operates in four wavelength regions that allow a distinction between auroras that are created by higher energy electrons (greater than 1 keV) and those created by low energy (less than 500 eV) precipitation. The cusp is the location where plasma enters the magnetosphere through the process of magnetic reconnection. This reconnection occurs where the Interplanetary Magnetic Field (IMF) and the terrestrial magnetic field are oriented in opposite directions. \n\nThe data are represented as keograms (geomagnetic north-south slices through the time series of images) for the four different wavelengths. The top of the keogram points to the magnetic south pole. The time series allows a very quick assessment about the presence of aurora, motion, intensity, and brightness differences in the four simultaneously registered channels.", "east": null, "geometry": null, "keywords": "Antarctica; Atmosphere; Aurora; Cosmos; Photo/Video", "locations": "Antarctica", "north": null, "nsf_funding_programs": null, "persons": "Frey, Harald; Mende, Stephen", "project_titles": "Antarctic Auroral Imaging", "projects": [{"proj_uid": "p0000361", "repository": "USAP-DC", "title": "Antarctic Auroral Imaging"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Antarctic Auroral Imaging", "uid": "600070", "west": null}, {"awards": "0126343 Nishiizumi, Kunihiko", "bounds_geometry": ["POINT(-148.812 -81.6588)"], "date_created": "Thu, 31 May 2007 00:00:00 GMT", "description": "This data set includes a record of cosmogenic radionuclide concentrations in the Siple Dome A ice core collected as part of the West Antarctic ice core program. The investigators measured profiles of both \u003csup\u003e10\u003c/sup\u003eBe (half-life = 1.5x10\u003csup\u003e6\u003c/sup\u003e years) and \u003csup\u003e36\u003c/sup\u003eCl (half-life = 3.0x10\u003csup\u003e5\u003c/sup\u003e years) in the entire ice core, which spans the time period from the present to about 100,000 years before present. These data are being used for perfecting the ice core chronology, deducing the history of solar activity, deducing the history of variations in the geomagnetic field, and studying the possible role of solar variations on climate. \n\nData are distributed as a PDF file and are available via FTP.", "east": -148.812, "geometry": ["POINT(-148.812 -81.6588)"], "keywords": "Antarctica; Cryosphere; Geochemistry; Geochronology; Glaciers/Ice Sheet; Glaciology; Ice Core Records; Paleoclimate; Siple Dome; Siple Dome Ice Core", "locations": "Siple Dome; Antarctica", "north": -81.6588, "nsf_funding_programs": "Antarctic Glaciology", "persons": "Finkel, R. C.; Nishiizumi, Kunihiko", "project_titles": "Cosmogenic Radionuclides in the Siple Dome Ice Core", "projects": [{"proj_uid": "p0000358", "repository": "USAP-DC", "title": "Cosmogenic Radionuclides in the Siple Dome Ice Core"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "Siple Dome Ice Core", "south": -81.6588, "title": "Cosmogenic Radionuclides in the Siple Dome A Ice Core", "uid": "609307", "west": -148.812}, {"awards": "9120464 Blankenship, Donald; 9319369 Blankenship, Donald; 9911617 Blankenship, Donald; 9319379 Blankenship, Donald", "bounds_geometry": ["POLYGON((-90 -68.73,-72 -68.73,-54 -68.73,-36 -68.73,-18 -68.73,0 -68.73,18 -68.73,36 -68.73,54 -68.73,72 -68.73,90 -68.73,90 -69.357,90 -69.984,90 -70.611,90 -71.238,90 -71.865,90 -72.492,90 -73.119,90 -73.746,90 -74.373,90 -75,72 -75,54 -75,36 -75,18 -75,0 -75,-18 -75,-36 -75,-54 -75,-72 -75,-90 -75,-90 -74.373,-90 -73.746,-90 -73.119,-90 -72.492,-90 -71.865,-90 -71.238,-90 -70.611,-90 -69.984,-90 -69.357,-90 -68.73))"], "date_created": "Tue, 13 Jul 2004 00:00:00 GMT", "description": "The data that the Support Office for Aerogeophysical Research (SOAR) provides include various aerogeophysical measurements taken in the West Antarctic Ice Shelf (WAIS) from 1994 to 2001. \n\nThe instruments used in experiments include ice-penetrating radar, laser altimetry and magnetics, and an integrated aerogeophysical platform that includes airborne gravity with carrier-phase GPS to support kinematic differential positioning.\n\nSOAR is a part of the University of Texas Institute for Geophysics (UTIG) and provides several types of data associated with various campaigns over the years. This material is based on work supported by the National Science Foundation under Grants: OPP-9120464, 9319369, 9319379, and 9911617.", "east": 90.0, "geometry": ["POINT(-180 -71.865)"], "keywords": "Airborne Radar; Antarctica; Cryosphere; Geology/Geophysics - Other; Glaciers/Ice Sheet; Glaciology; Navigation; Potential Field; SOAR; Solid Earth", "locations": "Antarctica", "north": -68.73, "nsf_funding_programs": "Antarctic Glaciology", "persons": "Blankenship, Donald D.; Morse, David L.; Holt, John W.; Dalziel, Ian W.", "project_titles": "Continuation of Activities for the Support Office for Aerogeophysical Research (SOAR)", "projects": [{"proj_uid": "p0000125", "repository": "USAP-DC", "title": "Continuation of Activities for the Support Office for Aerogeophysical Research (SOAR)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -75.0, "title": "Antarctic Aerogeophysics Data", "uid": "609240", "west": -90.0}]

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