[
{
"dataset_uid": "601474",
"doi": "10.15784/601474",
"landing_page": "https://www.usap-dc.org/view/dataset/601474",
"title": "Pennell Trough, Ross Sea bathymetry and glacial landforms",
"creator": "Simkins, Lauren; Greenwood, Sarah; Munevar Garcia, Santiago; Eareckson, Elizabeth; Anderson, John; Prothro, Lindsay",
"abstract": "Bathymetry from multibeam echo sounding data in Pennell Trough, Ross Sea, Antarctica was collected onboard the RVIB Nathaniel B. Palmer (NBP) 15-02 cruise using a Kongsberg EM122 operating in dual swath mode at 12 kHz frequency with a 1\u00b0\u00d71\u00b0 beam width, swath angular coverage set to 62\u00b0\u00d762\u00b0, and 30-60% overlap between survey lines. All raw, ping-edited geophysical data collected on NBP15-02 can be accessed using the Marine Geoscience Data System (Cruise DOI: 10.7284/901477). The bathymetry dataset here is gridded at 20-m resolution with a water depth-dependent vertical resolution on the order of decimeters. Two shapefiles are provided for ice-marginal landforms and meltwater landforms observable in the bathymetry data. The purpose of collecting the bathymetry data on cruise NBP15-02 was to better understand the glacial history of the Ross Sea, and the dataset, inclusive of bathymetry data and shapefiles of glacial landforms, from Pennell Trough are used to understand impacts on subglacial channel morphology and organization during the deglaciation of the region following the Last Glacial Maximum. The published dataset was used and analyzed in the article \"Topographic controls on channelized meltwater in the subglacial environment\" by Simkins, L.M., Greenwood, S.L., Munevar Garcia, S., Eareckson, E.A., Anderson, J.B., and Prothro, L.O, which was published in Geophysical Research Letters in 2021 (DOI: 10.1029/2021GL094678).",
"release_date": null,
"keywords": "Antarctica; Bathymetry; Elevation; Geomorphology; Glacial History; Glaciers/ice Sheet; Glaciers/Ice Sheet; Marine Geoscience; NBP1502; Pennell Trough; Ross Sea; R/v Nathaniel B. Palmer",
"locations": "Pennell Trough; Antarctica; Ross Sea",
"persons": "Greenwood, Sarah; Munevar Garcia, Santiago; Eareckson, Elizabeth; Anderson, John; Prothro, Lindsay; Simkins, Lauren",
"projects": [
{
"proj_uid": "p0000395",
"title": "Evidence for Paleo Ice Stream Collapse in the Western Ross Sea since the Last Glacial Maximum.",
"landing_page": "https://www.usap-dc.org/view/project/p0000395"
},
{
"proj_uid": "p0010269",
"title": "Collaborative Research: Topographic controls on Antarctic Ice Sheet grounding line retreat - integrating models and observations",
"landing_page": "https://www.usap-dc.org/view/project/p0010269"
}
],
"awards": "1745043 Simkins, Lauren; 1246353 Anderson, John; 1745055 Stearns, Leigh",
"north": "-75.0",
"south": "-77.0",
"east": "178.0",
"west": "174.0",
"science_programs": null,
"nsf_funding_programs": "Antarctic Earth Sciences; Antarctic Earth Sciences",
"replaces": null,
"replaced_by": null,
"language_id": "English",
"version": "1",
"date_created": "Mon, 04 Oct 2021 00:00:00 -0000",
"date_modified": "Wed, 10 Nov 2021 00:00:00 -0000"
},
{
"dataset_uid": "601182",
"doi": "10.15784/601182",
"landing_page": "https://www.usap-dc.org/view/dataset/601182",
"title": "NBP1502 YoYo camera benthic images from Ross Sea",
"creator": "Bart, Philip",
"abstract": "Still and video benthic images collected during expedition NBP1502 in the Ross Sea using a YoYo camera system.",
"release_date": null,
"keywords": "Antarctica; Benthic; Benthic Images; Benthos; Bentic Fauna; Camera Tow; Marine Geoscience; Marine Sediments; NBP1502; Photo; Photo/video; Photo/Video; Ross Sea; R/v Nathaniel B. Palmer; Southern Ocean; Yoyo Camera",
"locations": "Southern Ocean; Ross Sea; Antarctica",
"persons": "Bart, Philip",
"projects": [
{
"proj_uid": "p0000877",
"title": "Timing and Duration of the LGM and Post-LGM Grounding Events in Whales Deep Paleo Ice Stream, Eastern Ross Sea Middle Continental Shelf",
"landing_page": "https://www.usap-dc.org/view/project/p0000877"
}
],
"awards": "1246357 Bart, Philip",
"north": "-75.8",
"south": "-77.7",
"east": "-166.0",
"west": "-171.0",
"science_programs": null,
"nsf_funding_programs": "Antarctic Earth Sciences",
"replaces": null,
"replaced_by": null,
"language_id": "English",
"version": "1",
"date_created": "Mon, 03 Jun 2019 00:00:00 -0000",
"date_modified": "Mon, 03 Jun 2019 00:00:00 -0000"
},
{
"dataset_uid": "601083",
"doi": "10.15784/601083",
"landing_page": "https://www.usap-dc.org/view/dataset/601083",
"title": "NBP1502A Cruise Core Data",
"creator": "Anderson, John; Prothro, Lindsay; Simkins, Lauren",
"abstract": "Dataset includes details of cores collected as part of cruise NBP1502A, a list of radiocarbon-dated samples and samples to be radiocarbon-dated, and grain-size data from select NBP1502A cores.",
"release_date": null,
"keywords": "Antarctica; Chemistry:sediment; Chemistry:Sediment; Geochronology; Marine Geoscience; Marine Sediments; NBP1502; R/v Nathaniel B. Palmer; Sediment Core",
"locations": "Antarctica",
"persons": "Simkins, Lauren; Anderson, John; Prothro, Lindsay",
"projects": [
{
"proj_uid": "p0000395",
"title": "Evidence for Paleo Ice Stream Collapse in the Western Ross Sea since the Last Glacial Maximum.",
"landing_page": "https://www.usap-dc.org/view/project/p0000395"
}
],
"awards": "1246353 Anderson, John",
"north": "-74.37",
"south": "-78.14",
"east": "-168.5",
"west": "164.8",
"science_programs": null,
"nsf_funding_programs": "Antarctic Earth Sciences",
"replaces": null,
"replaced_by": null,
"language_id": "English",
"version": "1",
"date_created": "Mon, 05 Feb 2018 00:00:00 -0000",
"date_modified": "Mon, 05 Feb 2018 00:00:00 -0000"
},
{
"dataset_uid": "609281",
"doi": "10.7265/N5TT4NWF",
"landing_page": "https://www.usap-dc.org/view/dataset/609281",
"title": "Atmospheric Nitrate Isotopic Analysis at Amundsen-Scott South Pole Station, A Twenty-Five Year Record",
"creator": "Thiemens, Mark H.; Savarino, Joel",
"abstract": "This data set contains snow pit measurements of oxygen isotopes, 17O and 18O, in nitrate and ion concentrations, and surface measurements of oxygen isotopes in nitrate and in nitrate aerosols from the Amundsen-Scott South Pole Station, Antarctica. The 6-meter snow pit provides investigators with a 25-year record of nitrate isotope variations and ion concentrations for a period spanning from 1979 to 2004. Monthly surface snow and weekly aerosol collections yield a year-long record of nitrate isotopic composition starting 01 December 2003 and ending 31 December 2004.\n\nLittle is known about the past denitrification of the stratosphere in high latitude regions. Such knowledge is important to understanding the chemical state of the ancient atmospheres and evaluating the present climate models. With this research, investigators aim to understand the denitrification of the Antarctic stratosphere and quantify the sources of nitrate aerosols over time.\n\nData are in Microsoft Excel format and are available via FTP.",
"release_date": null,
"keywords": "Aerosol; Antarctica; Atmosphere; Chemistry:fluid; Chemistry:Fluid; Geochemistry; NBP1502; Snow/ice; Snow/Ice; South Pole Station",
"locations": "South Pole Station; Antarctica",
"persons": "Thiemens, Mark H.; Savarino, Joel",
"projects": [
{
"proj_uid": "p0000242",
"title": "South Pole Atmospheric Nitrate Isotopic Analysis (SPANIA)",
"landing_page": "https://www.usap-dc.org/view/project/p0000242"
}
],
"awards": "0125761 Thiemens, Mark",
"north": "-89.9975",
"south": "-89.9975",
"east": "139.2728",
"west": "139.2728",
"science_programs": null,
"nsf_funding_programs": "Antarctic Glaciology",
"replaces": null,
"replaced_by": null,
"language_id": "English",
"version": "1",
"date_created": "Wed, 01 Nov 2006 00:00:00 -0000",
"date_modified": "Wed, 01 Nov 2006 00:00:00 -0000"
}
]