USAP-DC

{"dp_type": "Project", "free_text": "Passcal"}

[{"awards": "2023355 Schmandt, Brandon", "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))", "dataset_titles": null, "datasets": null, "date_created": "Tue, 20 Feb 2024 00:00:00 GMT", "description": "Part 1: Nontechnical\u003cbr/\u003e \u003cbr/\u003eUnlike other locations on the globe Antarctica is not known for having large earthquakes and the remote nature and harsh conditions make it difficult to install and maintain seismometers for earthquake detection. Some researchers believe the lack of large earthquakes is due to the continent being surrounded by inactive tectonic margins. However, in the last two decades, scientists have discovered that more earthquakes occur in the interior of the continent than previously observed. This suggests that there are many earthquakes missing from historic earthquake catalogs. This study aims to find the missing earthquakes using novel earthquake detection and location techniques from seismic data collected from temporary and permanent seismic stations in Antarctica over the last 25 years. Locating these earthquakes will help understand if and where earthquakes are located in Antarctica and will help in planning future seismic deployments. As part of the project broader impacts, a field expedition with the Girls on Rock program will be conducted to teach high school age girls, and especially those from underrepresented backgrounds, data visualization techniques using scientific data. \u003cbr/\u003e \u003cbr/\u003ePart 2: Technical\u003cbr/\u003e \u003cbr/\u003eThe spatial distribution of seismicity and the number of moderate magnitude earthquakes in Antarctica is not well-defined. The current catalog of earthquakes may be biased by uneven and sparse seismograph distribution on the continent. We will mine existing broadband seismic data from both permanent and temporary deployments to lower the earthquake detection threshold across Interior Antarctica, with a focus on tectonic earthquakes. The hypothesis is that Interior Antarctica has abundant moderate magnitude earthquakes, previously undetected. These earthquakes are likely collocated with major tectonic features such as the Transantarctic Mountains, the suspected Vostok collision zone, the West Antarctic Rift System, the crustal compositional boundary between East and West Antarctica, and the Cretaceous East Antarctic Rift. Previous seismic deployments have recorded earthquakes in the Antarctic interior, suggesting there are many earthquakes missing from the current catalog. We propose to use novel earthquake location techniques designed for automated detection and location using 25 years of continuous data archived at IRIS from PASSCAL experiments and permanent stations. The approach will use STA/LTA detectors on the first arrival P-wave to 90 degrees distance, Reverse Time Imaging to locate events, and beamforming at dense arrays strategically located on cratons for enhanced detection and location. The combination of detection and location techniques used in this work has not been used on teleseismic body waves, although similar methods have worked well for surface wave studies. If successful the project would provide an excellent training dataset for future scrutiny of newly discovered Antarctic seismicity with machine learning approaches and/or new targeted data collection. We plan to collaborate with Girls on Rock, a local and international organization committed to building a culturally diverse community in science, art, and wilderness exploration, in a summer field expedition and integrating computer coding into post-field scientific projects.\u003cbr/\u003e\u003cbr/\u003eThis award reflects NSF\u0027s statutory mission and has been deemed worthy of support through evaluation using the Foundation\u0027s intellectual merit and broader impacts review criteria.", "east": 180.0, "geometry": "POINT(0 -89.999)", "instruments": null, "is_usap_dc": true, "keywords": "Antarctica; Seismic Events; Icequakes; TECTONICS; Earthquakes", "locations": "Antarctica", "north": -60.0, "nsf_funding_programs": "Polar Special Initiatives; Antarctic Earth Sciences", "paleo_time": null, "persons": "Schmandt, Brandon", "platforms": null, "repositories": null, "science_programs": null, "south": -90.0, "title": "EAGER: Lowering the detection threshold of Antarctic seismicity to reveal undiscovered intraplate deformation", "uid": "p0010450", "west": -180.0}, {"awards": "1043784 Schwartz, Susan", "bounds_geometry": "POLYGON((-160 -79,-158 -79,-156 -79,-154 -79,-152 -79,-150 -79,-148 -79,-146 -79,-144 -79,-142 -79,-140 -79,-140 -79.3,-140 -79.6,-140 -79.9,-140 -80.2,-140 -80.5,-140 -80.8,-140 -81.1,-140 -81.4,-140 -81.7,-140 -82,-142 -82,-144 -82,-146 -82,-148 -82,-150 -82,-152 -82,-154 -82,-156 -82,-158 -82,-160 -82,-160 -81.7,-160 -81.4,-160 -81.1,-160 -80.8,-160 -80.5,-160 -80.2,-160 -79.9,-160 -79.6,-160 -79.3,-160 -79))", "dataset_titles": "PASSCAL experiment 201205 (full data link not provided)", "datasets": [{"dataset_uid": "000194", "doi": "", "keywords": null, "people": null, "repository": "IRIS", "science_program": null, "title": "PASSCAL experiment 201205 (full data link not provided)", "url": "http://ds.iris.edu/ds/nodes/dmc/"}], "date_created": "Tue, 07 Nov 2017 00:00:00 GMT", "description": "This award provides support for \"Investigating (Un)Stable Sliding of Whillans Ice Stream and Subglacial Water Dynamics Using Borehole Seismology: A proposed Component of the Whillans Ice Stream Subglacial Access and Research Drilling\" from the Antarctic Integrated Systems Science (AISS) program in the Office of Polar Programs at NSF. The project will use the sounds naturally produced by the ice and subglacial water to understand the glacial dynamics of the Whillans Ice Stream located adjacent to the Ross Ice Shelf in Antarctica.\u003cbr/\u003e\u003cbr/\u003eIntellectual Merit: The transformative component of the project is that in addition to passive surface seismometers, the team will deploy a series of borehole seismometers. Englacial placement of the seismometers has not been done before, but is predicted to provide much better resolution (detection of smaller scale events as well as detection of a much wider range of frequencies) of the subglacial dynamics. In conjunction with the concurrent WISSARD (Whillans Ice Stream Subglacial Access and Research Drilling) project the team will be able to tie subglacial processes to temporal variations in ice stream dynamics and mass balance of the ice stream. The Whillans Ice Stream experiences large changes in ice velocity in response to tidally triggered stick-slip cycles as well as periodic filling and draining of subglacial Lake Whillans. The overall science goals include: improved understanding of basal sliding processes and role of sticky spots, subglacial lake hydrology, and dynamics of small earthquakes and seismic properties of ice and firn.\u003cbr/\u003e\u003cbr/\u003eBroader Impact: Taken together, the research proposed here will provide information on basal controls of fast ice motion which has been recognized by the IPCC as necessary to make reliable predictions of future global sea-level rise. The information collected will therefore have broader implications for global society. The collected information will also be relevant to a better understanding of earthquakes. For outreach the project will work with the overall WISSARD outreach coordinator to deliver information to three audiences: the general public, middle school teachers, and middle school students. The project also provides funding for training of graduate students, and includes a female principal investigator.", "east": -140.0, "geometry": "POINT(-150 -80.5)", "instruments": null, "is_usap_dc": true, "keywords": "Not provided", "locations": null, "north": -79.0, "nsf_funding_programs": "Antarctic Integrated System Science", "paleo_time": null, "persons": "Schwartz, Susan; Tulaczyk, Slawek", "platforms": "Not provided", "repo": "IRIS", "repositories": "IRIS", "science_programs": null, "south": -82.0, "title": "Investigating (Un)Stable Sliding of Whillians Ice Stream and Subglacial Water Dynamics Using Borehole Seismology: A Proposed Component of WISSARD", "uid": "p0000393", "west": -160.0}, {"awards": "1142083 Kyle, Philip", "bounds_geometry": "POINT(167.15334 -77.529724)", "dataset_titles": "Database of Erebus cave field seasons; Icequakes at Erebus volcano, Antarctica; Mount Erebus Observatory GPS data; Mount Erebus Seismic Data; Mount Erebus Thermodynamic model code; Mount Erebus Volcano Observatory: Operations, Science and Outreach (MEVO-OSO); Seismic data used for high-resolution active-source seismic tomography", "datasets": [{"dataset_uid": "200031", "doi": "", "keywords": null, "people": null, "repository": "GitHub", "science_program": null, "title": "Mount Erebus Thermodynamic model code", "url": "https://github.com/kaylai/Iacovino2015_thermodynamic_model"}, {"dataset_uid": "600381", "doi": "10.15784/600381", "keywords": "Antarctica; Cable Observatory; Geology/Geophysics - Other; Infrared Imagery; Intracontinental Magmatism; IntraContinental Magmatism; MEVO; Mount Erebus; Photo/video; Photo/Video; Ross Island; Solid Earth; Thermal Camera; Volcano", "people": "Oppenheimer, Clive; Kyle, Philip", "repository": "USAP-DC", "science_program": "MEVO", "title": "Mount Erebus Volcano Observatory: Operations, Science and Outreach (MEVO-OSO)", "url": "https://www.usap-dc.org/view/dataset/600381"}, {"dataset_uid": "200034", "doi": "", "keywords": null, "people": null, "repository": "IRIS", "science_program": null, "title": "Seismic data used for high-resolution active-source seismic tomography", "url": "http://ds.iris.edu/mda/ZW/?timewindow=2007-2009http://ds.iris.edu/mda/Y4?timewindow=2008-2009http://ds.iris.edu/ds/nodes/dmc/forms/assembled-data/?dataset_report_number=09-015"}, {"dataset_uid": "200032", "doi": "", "keywords": null, "people": null, "repository": "IRIS", "science_program": null, "title": "Mount Erebus Seismic Data", "url": "http://ds.iris.edu/mda/ER/"}, {"dataset_uid": "200027", "doi": "", "keywords": null, "people": null, "repository": "UNAVCO", "science_program": null, "title": "Mount Erebus Observatory GPS data", "url": "https://www.unavco.org/data/gps-gnss/data-access-methods/dai1/monument.php?mid=22083\u0026parent_link=Permanent\u0026pview=original"}, {"dataset_uid": "200033", "doi": "", "keywords": null, "people": null, "repository": "IRIS", "science_program": null, "title": "Icequakes at Erebus volcano, Antarctica", "url": "http://ds.iris.edu/mda/ZW/?timewindow=2007-2009http://ds.iris.edu/mda/Y4?timewindow=2008-2009http://ds.iris.edu/mda/ZO?timewindow=2011-2012"}, {"dataset_uid": "200030", "doi": "", "keywords": null, "people": null, "repository": "GitHub", "science_program": null, "title": "Database of Erebus cave field seasons", "url": "https://github.com/foobarbecue/troggle"}], "date_created": "Tue, 03 Sep 2013 00:00:00 GMT", "description": "Intellectual Merit: \u003cbr/\u003eMt. Erebus is one of only a handful of volcanoes worldwide that have lava lakes with readily observable and nearly continuous Strombolian explosive activity. Erebus is also unique in having a permanent convecting lava lake of anorthoclase phonolite magma. Over the years significant infrastructure has been established at the summit of Mt. Erebus as part of the Mount Erebus Volcano Observatory (MEVO), which serves as a natural laboratory to study a wide range of volcanic processes, especially magma degassing associated with an open convecting magma conduit. The PI proposes to continue operating MEVO for a further five years. The fundamental fundamental research objectives are: to understand diffuse flank degassing by using distributed temperature sensing and gas measurements in ice caves, to understand conduit processes, and to examine the environmental impact of volcanic emissions from Erebus on atmospheric and cryospheric environments. To examine conduit processes the PI will make simultaneous observations with video records, thermal imaging, measurements of gas emission rates and gas compositions, seismic, and infrasound data.\u003cbr/\u003e\u003cbr/\u003eBroader impacts: \u003cbr/\u003eAn important aspect of Erebus research is the education and training of students. Both graduate and undergraduate students will have the opportunity to work on MEVO data and deploy to the field site. In addition, this proposal will support a middle or high school science teacher for two field seasons. The PI will also continue working with various media organizations and filmmakers.", "east": 167.15334, "geometry": "POINT(167.15334 -77.529724)", "instruments": "EARTH REMOTE SENSING INSTRUMENTS \u003e PASSIVE REMOTE SENSING \u003e SPECTROMETERS/RADIOMETERS \u003e IMAGING SPECTROMETERS/RADIOMETERS \u003e TIRS; EARTH REMOTE SENSING INSTRUMENTS \u003e PASSIVE REMOTE SENSING \u003e SPECTROMETERS/RADIOMETERS \u003e SPECTROMETERS \u003e FTIR SPECTROMETER; EARTH REMOTE SENSING INSTRUMENTS \u003e PASSIVE REMOTE SENSING \u003e SPECTROMETERS/RADIOMETERS \u003e SPECTROMETERS \u003e DOAS; EARTH REMOTE SENSING INSTRUMENTS \u003e ACTIVE REMOTE SENSING \u003e POSITIONING/NAVIGATION \u003e LASER RANGING \u003e MOBLAS; IN SITU/LABORATORY INSTRUMENTS \u003e PROBES \u003e ELECTRON MICROPROBES; IN SITU/LABORATORY INSTRUMENTS \u003e PHOTON/OPTICAL DETECTORS \u003e PETROGRAPHIC MICROSCOPES; IN SITU/LABORATORY INSTRUMENTS \u003e MAGNETIC/MOTION SENSORS \u003e SEISMOMETERS \u003e SEISMOMETERS; NOT APPLICABLE \u003e NOT APPLICABLE \u003e NOT APPLICABLE; EARTH REMOTE SENSING INSTRUMENTS \u003e PASSIVE REMOTE SENSING \u003e SPECTROMETERS/RADIOMETERS \u003e IMAGING SPECTROMETERS/RADIOMETERS \u003e HRDI; EARTH REMOTE SENSING INSTRUMENTS \u003e PASSIVE REMOTE SENSING \u003e SPECTROMETERS/RADIOMETERS \u003e IMAGING SPECTROMETERS/RADIOMETERS \u003e TIRS; IN SITU/LABORATORY INSTRUMENTS \u003e PROFILERS/SOUNDERS \u003e ACOUSTIC SOUNDERS \u003e INFRASONIC MICROPHONES; IN SITU/LABORATORY INSTRUMENTS \u003e SPECTROMETERS/RADIOMETERS \u003e AMS; IN SITU/LABORATORY INSTRUMENTS \u003e SPECTROMETERS/RADIOMETERS \u003e XRF; IN SITU/LABORATORY INSTRUMENTS \u003e SPECTROMETERS/RADIOMETERS \u003e ICP-MS; IN SITU/LABORATORY INSTRUMENTS \u003e SPECTROMETERS/RADIOMETERS \u003e ICP-ES; EARTH REMOTE SENSING INSTRUMENTS \u003e ACTIVE REMOTE SENSING \u003e POSITIONING/NAVIGATION \u003e LASER RANGING \u003e MOBLAS; IN SITU/LABORATORY INSTRUMENTS \u003e CHEMICAL METERS/ANALYZERS \u003e IRGA; IN SITU/LABORATORY INSTRUMENTS \u003e PHOTON/OPTICAL DETECTORS \u003e SCANNING ELECTRON MICROSCOPES; IN SITU/LABORATORY INSTRUMENTS \u003e PRESSURE/HEIGHT METERS \u003e PRESSURE CHAMBERS; EARTH REMOTE SENSING INSTRUMENTS \u003e PASSIVE REMOTE SENSING \u003e SPECTROMETERS/RADIOMETERS \u003e SPECTROMETERS \u003e FTIR SPECTROMETER; EARTH REMOTE SENSING INSTRUMENTS \u003e PASSIVE REMOTE SENSING \u003e PHOTON/OPTICAL DETECTORS \u003e MICROTOMOGRAPHY; IN SITU/LABORATORY INSTRUMENTS \u003e SPECTROMETERS/RADIOMETERS \u003e SIMS; IN SITU/LABORATORY INSTRUMENTS \u003e CHEMICAL METERS/ANALYZERS \u003e GAS CHROMATOGRAPHS", "is_usap_dc": true, "keywords": "Earthquakes; Vesuvius; Cosmogenic Radionuclides; Infrasonic Signals; Icequakes; Magma Shells; Phase Equilibria; Passcal; Correlation; Backscattering; Eruptive History; Degassing; Volatiles; Magma Convection; Thermodynamics; Tremors; Optech; Uv Doas; Energy Partitioning; Erebus; Cronus; Holocene; Lava Lake; Phonolite; Vagrant; Thermal Infrared Camera; Flir; USA/NSF; Mount Erebus; Active Source Seismic; GROUND-BASED OBSERVATIONS; Interferometry; Volatile Solubility; Redox State; Viscosity; Hydrogen Emission; Seismicity; Eruptions; Explosion Energy; FIELD SURVEYS; Radar Spectra; OBSERVATION BASED; Seismic Events; Strombolian Eruptions; Anorthoclase; Ice Caves; Iris; VOLCANO OBSERVATORY; Melt Inclusions; Ftir; Alkaline Volcanism; Tomography; TLS; Volcanic Gases; ANALYTICAL LAB", "locations": "Vesuvius; Cronus; Vagrant; Mount Erebus; Passcal", "north": -77.529724, "nsf_funding_programs": "Antarctic Earth Sciences", "paleo_time": "PHANEROZOIC \u003e CENOZOIC \u003e QUATERNARY \u003e HOLOCENE", "persons": "Kyle, Philip; Oppenheimer, Clive; Chaput, Julien; Jones, Laura; Fischer, Tobias", "platforms": "LAND-BASED PLATFORMS \u003e FIELD SITES \u003e FIELD SURVEYS; LAND-BASED PLATFORMS \u003e PERMANENT LAND SITES \u003e GROUND-BASED OBSERVATIONS; LAND-BASED PLATFORMS \u003e PERMANENT LAND SITES \u003e VOLCANO OBSERVATORY; OTHER \u003e MODELS \u003e OBSERVATION BASED; OTHER \u003e PHYSICAL MODELS \u003e ANALYTICAL LAB", "repo": "GitHub", "repositories": "GitHub; IRIS; UNAVCO; USAP-DC", "science_programs": "MEVO", "south": -77.529724, "title": "Mount Erebus Volcano Observatory: Operations, Science and Outreach (MEVO-OSO)", "uid": "p0000383", "west": 167.15334}, {"awards": "0739769 Fricker, Helen", "bounds_geometry": "POLYGON((-57.22 74.58,-55.343 74.58,-53.466 74.58,-51.589 74.58,-49.712 74.58,-47.835 74.58,-45.958 74.58,-44.081 74.58,-42.204 74.58,-40.327 74.58,-38.45 74.58,-38.45 73.822,-38.45 73.064,-38.45 72.306,-38.45 71.548,-38.45 70.79,-38.45 70.032,-38.45 69.274,-38.45 68.516,-38.45 67.758,-38.45 67,-40.327 67,-42.204 67,-44.081 67,-45.958 67,-47.835 67,-49.712 67,-51.589 67,-53.466 67,-55.343 67,-57.22 67,-57.22 67.758,-57.22 68.516,-57.22 69.274,-57.22 70.032,-57.22 70.79,-57.22 71.548,-57.22 72.306,-57.22 73.064,-57.22 73.822,-57.22 74.58))", "dataset_titles": "Amery Ice Shelf metadata (IRIS); Columbia Glacier metadata (IRIS); Greenland Ice Sheet Seismic Network metadata (IRIS)", "datasets": [{"dataset_uid": "000103", "doi": "", "keywords": null, "people": null, "repository": "IRIS", "science_program": null, "title": "Greenland Ice Sheet Seismic Network metadata (IRIS)", "url": "http://www.iris.edu/mda/_GLISN"}, {"dataset_uid": "000101", "doi": "", "keywords": null, "people": null, "repository": "IRIS", "science_program": null, "title": "Columbia Glacier metadata (IRIS)", "url": "http://www.iris.edu/mda/YM?timewindow=2004-2005"}, {"dataset_uid": "000100", "doi": "", "keywords": null, "people": null, "repository": "IRIS", "science_program": null, "title": "Amery Ice Shelf metadata (IRIS)", "url": "http://www.iris.edu/mda/X9?timewindow=2004-2007"}], "date_created": "Thu, 22 Mar 2012 00:00:00 GMT", "description": "This award supports a project to strengthen collaborations between the various research groups working on iceberg calving. Relatively little is known about the calving process, especially the physics that governs the initiation and propagation of fractures within the ice. This knowledge gap exists in part because of the diverse range in spatial and temporal scales associated with calving (ranging from less than one meter to over a hundred kilometers in length scale). It is becoming increasingly clear that to predict the future behavior of the Antarctic Ice Sheet and its contribution to sea level rise, it is necessary to improve our understanding of iceberg calving processes. Further challenges stem from difficulties in monitoring and quantifying short-time and spatial-scale processes associated with ice fracture, including increased fracturing events in ice shelves or outlet glaciers that may be a precursor to disintegration, retreat or increased calving rates. Coupled, these fundamental problems currently prohibit the inclusion of iceberg calving into numerical ice sheet models and hinder our ability to accurately forecast changes in sea level in response to climate change. Seismic data from four markedly different environmental regimes forms the basis of the proposed research, and researchers most familiar with the datasets will perform all analyses. Extracting the similarities and differences across the full breadth of calving processes embodies the core of the proposed work, combining and improving methods previously developed by each group. Techniques derived from solid Earth seismology, including waveform cross-correlation and clustering will be applied to each data set allowing quantitative process comparisons on a significantly higher level than previously possible. This project will derive catalogues of glaciologically produced seismic events; the events will then be located and categorized based on their location, waveform and waveform spectra both within individual environments and between regions. The intellectual merit of this work is that it will lead to a better understanding of iceberg calving and the teleconnections between seismic events and other geophysical processes around the globe. The broader impacts of this work are that it relates directly to socio-environmental impacts of global change and sea level rise. Strong collaborations will form as a result of this research, including bolstered collaborations between the glacier and ice sheet communities, as well as the glaciology and seismology communities. Outreach and public dissemination of findings will be driven by SIO\u0027s Visualization Center, and Birch Aquarium, hosting presentations devoted to the role of the cryosphere in global change. Time-lapse movies of recent changes at Columbia Glacier will be used to engage potential young scientists. A program of presentations outside the university setting to at-risk and gifted youth will be continued. This study will also involve undergraduates in analyses and interpretation and presentation of the seismic data assembled. The work will also support two junior scientists who will be supported by this project.", "east": 72.949097, "geometry": "POINT(72.8836975 -69.008701)", "instruments": "IN SITU/LABORATORY INSTRUMENTS \u003e MAGNETIC/MOTION SENSORS \u003e SEISMOMETERS \u003e SEISMOMETERS", "is_usap_dc": false, "keywords": "PASSCAL; Not provided; Antarctic; SEISMOLOGICAL STATIONS; Iceberg; Seismology; Calving", "locations": "Antarctic", "north": -68.993301, "nsf_funding_programs": "Antarctic Glaciology", "paleo_time": null, "persons": "Fricker, Helen", "platforms": "LAND-BASED PLATFORMS \u003e PERMANENT LAND SITES \u003e PASSCAL; LAND-BASED PLATFORMS \u003e PERMANENT LAND SITES \u003e SEISMOLOGICAL STATIONS; Not provided", "repo": "IRIS", "repositories": "IRIS", "science_programs": null, "south": -69.024101, "title": "An Investigation into the Seismic Signatures Generated by Iceberg Calving and Rifting", "uid": "p0000683", "west": 72.818298}, {"awards": "0619708 Simpson, David", "bounds_geometry": "POINT(180 90)", "dataset_titles": "IRIS data management center: seismic data and metadata for the engineering testing of these designs can be found under the XD network code (Polar Equipment Development) at stations PMC01, PMC02, PSP01, PSP02, and PSP03.", "datasets": [{"dataset_uid": "001460", "doi": "", "keywords": null, "people": null, "repository": "IRIS", "science_program": null, "title": "IRIS data management center: seismic data and metadata for the engineering testing of these designs can be found under the XD network code (Polar Equipment Development) at stations PMC01, PMC02, PSP01, PSP02, and PSP03.", "url": "http://ds.iris.edu/ds/nodes/dmc/"}], "date_created": "Mon, 20 Dec 2010 00:00:00 GMT", "description": "This project develops power and communications systems to support the operation of seismometers and GPS receivers in Antarctica throughout the polar night. In terms of intellectual merit, this system would allow a new class of geophysical questions to be approached, in areas as varied as ice sheet movement, plate tectonics, and deep earth structure. In terms of broader impacts, this project represents research infrastructure of potential use to many scientific disciplines. In addition, the results will improve society\u0027s understanding of the Antarctic ice sheet and its behavior in response to global warming.", "east": -180.0, "geometry": "POINT(-180 -90)", "instruments": "IN SITU/LABORATORY INSTRUMENTS \u003e MAGNETIC/MOTION SENSORS \u003e SEISMOMETERS \u003e SEISMOGRAPHS", "is_usap_dc": false, "keywords": "IRIS-GSN; PASSCAL; SEISMOLOGICAL STATIONS; Not provided; GSN", "locations": null, "north": -90.0, "nsf_funding_programs": "Antarctic Earth Sciences", "paleo_time": null, "persons": "Anderson, Kent; Parker, Tim", "platforms": "LAND-BASED PLATFORMS \u003e PERMANENT LAND SITES \u003e GSN; LAND-BASED PLATFORMS \u003e PERMANENT LAND SITES \u003e IRIS-GSN; LAND-BASED PLATFORMS \u003e PERMANENT LAND SITES \u003e PASSCAL; LAND-BASED PLATFORMS \u003e PERMANENT LAND SITES \u003e SEISMOLOGICAL STATIONS; Not provided", "repo": "IRIS", "repositories": "IRIS", "science_programs": null, "south": -90.0, "title": "Collaborative Research: Development of a Power and Communication System for Remote Autonomous GPS and Seismic Stations in Antarctica", "uid": "p0000691", "west": -180.0}, {"awards": "9814622 Wiens, Douglas", "bounds_geometry": "POLYGON((-70.90604 -52.35474,-69.307306 -52.35474,-67.708572 -52.35474,-66.109838 -52.35474,-64.511104 -52.35474,-62.91237 -52.35474,-61.313636 -52.35474,-59.714902 -52.35474,-58.116168 -52.35474,-56.517434 -52.35474,-54.9187 -52.35474,-54.9187 -53.658393,-54.9187 -54.962046,-54.9187 -56.265699,-54.9187 -57.569352,-54.9187 -58.873005,-54.9187 -60.176658,-54.9187 -61.480311,-54.9187 -62.783964,-54.9187 -64.087617,-54.9187 -65.39127,-56.517434 -65.39127,-58.116168 -65.39127,-59.714902 -65.39127,-61.313636 -65.39127,-62.91237 -65.39127,-64.511104 -65.39127,-66.109838 -65.39127,-67.708572 -65.39127,-69.307306 -65.39127,-70.90604 -65.39127,-70.90604 -64.087617,-70.90604 -62.783964,-70.90604 -61.480311,-70.90604 -60.176658,-70.90604 -58.873005,-70.90604 -57.569352,-70.90604 -56.265699,-70.90604 -54.962046,-70.90604 -53.658393,-70.90604 -52.35474))", "dataset_titles": "Expedition Data; Expedition data of LMG0003A", "datasets": [{"dataset_uid": "002688", "doi": null, "keywords": null, "people": null, "repository": "R2R", "science_program": null, "title": "Expedition data of LMG0003A", "url": "https://www.rvdata.us/search/cruise/LMG0003A"}, {"dataset_uid": "002059", "doi": "", "keywords": null, "people": null, "repository": "R2R", "science_program": null, "title": "Expedition Data", "url": "https://www.rvdata.us/search/cruise/NBP9905"}, {"dataset_uid": "001854", "doi": "", "keywords": null, "people": null, "repository": "R2R", "science_program": null, "title": "Expedition Data", "url": "https://www.rvdata.us/search/cruise/NBP0106"}], "date_created": "Tue, 04 May 2010 00:00:00 GMT", "description": "This award, provided jointly by the Antarctic Geology and Geophysics Program of the Office of Polar Programs, supports research to transform three temporary seismometers in the Antarctic Peninsula into semi-permanent stations and to continue basic research using these data. During 1997 and 1998, a network of 11 broadband seismographs in the Antarctic Peninsula region and southernmost Chilean Patagonia were installed and maintained. Data return from this project has been excellent and interesting initial results have been produced. The continued operation of these instruments over a longer time period would be highly beneficial because the number of larger magnitude regional earthquakes is small and so a longer time is needed to acquire data. However, instruments from this project are borrowed from the IRIS-PASSCAL instrument pool and must be returned to PASSCAL in April, 1999. This award provides funds to convert three stations at permanent Chilean bases in the Antarctic to permanent stations, and to continue the seismological investigation of the region for a period of four years. As part of this project, a fourth station, in Chilean Patagonia, will continue to be operated using Washington University equipment. The funding of this project will enable continued collaboration between Washington University and the Universidad de Chile in the operation of these stations, and the data will be forwarded to the IRIS data center as well as to other international seismological collaborators. Mutual data exchanges with other national groups with Antarctic seismology research programs will provide access to broadband data from a variety of other proprietary broadband stations in the region. The data will be used to study the seismicity and upper mantle velocity structure of several complicated tectonic regions in the area, including the South Shetland subduction zone, the Bransfield backarc rift, and diffuse plate boundaries in Patagonia, Drake Passage, and along the South Scotia Ridge. In particular, the operation of these stations over a longer time period will allow a better understanding of the seismicity of the South Shetland Trench, an unusual subduction zone showing very slow subduction of young lithosphere. These seismometers will also be used to record airgun shots during a geophysical cruise in the Bransfield Strait that is being planned by the University of Texas for April, 2000. These data will provide important constraints on the crustal structure beneath the stations, and the improved structural models will enable implementation of more precise earthquake location procedures in support of a seismological understanding of the region.", "east": -54.9187, "geometry": "POINT(-62.91237 -58.873005)", "instruments": "IN SITU/LABORATORY INSTRUMENTS \u003e MAGNETIC/MOTION SENSORS \u003e GRAVIMETERS \u003e GRAVIMETERS; IN SITU/LABORATORY INSTRUMENTS \u003e PROFILERS/SOUNDERS \u003e ACOUSTIC SOUNDERS \u003e MSBS", "is_usap_dc": false, "keywords": "R/V LMG; R/V NBP", "locations": null, "north": -52.35474, "nsf_funding_programs": "Antarctic Earth Sciences", "paleo_time": null, "persons": "Wiens, Douglas; Visbeck, Martin", "platforms": "WATER-BASED PLATFORMS \u003e VESSELS \u003e SURFACE \u003e R/V LMG; WATER-BASED PLATFORMS \u003e VESSELS \u003e SURFACE \u003e R/V NBP", "repo": "R2R", "repositories": "R2R", "science_programs": null, "south": -65.39127, "title": "Acquisition and Operation of Broadband Seismograph Equipment at Chilean Bases in the Antarctic Peninsula Region", "uid": "p0000604", "west": -70.90604}]

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