USAP-DC

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

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Palmer; Seafloor Sampling; Species Abundance", "locations": "Antarctic Peninsula; Larsen Ice Shelf; Larsen Ice Shelf; Antarctica", "north": -61.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Smith, Craig", "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": -67.8, "title": "Macrofauna Species Abundance Raw Data from the Larsen Ice Shelf acquired during the Nathaniel B. Palmer expedition NBP1001", "uid": "601306", "west": -69.0}, {"awards": "1565576 Pettit, Erin", "bounds_geometry": ["POLYGON((-63 -64.75,-62.6 -64.75,-62.2 -64.75,-61.8 -64.75,-61.4 -64.75,-61 -64.75,-60.6 -64.75,-60.2 -64.75,-59.8 -64.75,-59.4 -64.75,-59 -64.75,-59 -64.9,-59 -65.05,-59 -65.2,-59 -65.35,-59 -65.5,-59 -65.65,-59 -65.8,-59 -65.95,-59 -66.1,-59 -66.25,-59.4 -66.25,-59.8 -66.25,-60.2 -66.25,-60.6 -66.25,-61 -66.25,-61.4 -66.25,-61.8 -66.25,-62.2 -66.25,-62.6 -66.25,-63 -66.25,-63 -66.1,-63 -65.95,-63 -65.8,-63 -65.65,-63 -65.5,-63 -65.35,-63 -65.2,-63 -65.05,-63 -64.9,-63 -64.75))"], "date_created": "Tue, 13 Feb 2018 00:00:00 GMT", "description": "Weather and instrument data from the Automated Meterology Ice Geophysics Observation System (AMIGOS) stations installed as part of the LARISSA and RAPID Scar Inlet funded grants from NSF-PLR. The data include temperature, wind, pressure, humidity, station position (coarse), and station health.", "east": -59.0, "geometry": ["POINT(-61 -65.5)"], "keywords": "Antarctica; Antarctic Peninsula; Atmosphere; Automated Weather Station; Flask Glacier; Foehn Winds; Glaciers/ice Sheet; Glaciers/Ice Sheet; LARISSA; Larsen B Ice Shelf; Meteorology; Scar Inlet; Weatherstation; Wind Speed", "locations": "Antarctic Peninsula; Larsen B Ice Shelf; Scar Inlet; Flask Glacier; Antarctica", "north": -64.75, "nsf_funding_programs": "Antarctic Glaciology; Antarctic Integrated System Science", "persons": "Scambos, Ted", "project_titles": "RAPID: Observing the Disintegration of the Scar Inlet Ice Shelf", "projects": [{"proj_uid": "p0000274", "repository": "USAP-DC", "title": "RAPID: Observing the Disintegration of the Scar Inlet Ice Shelf"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "LARISSA", "south": -66.25, "title": "Weather data from LARISSA / SCAR Inlet Rapid AMIGOS and cGPS stations", "uid": "601084", "west": -63.0}, {"awards": "0732917 McCormick, Michael", "bounds_geometry": ["POLYGON((299.4 -63.1,299.92 -63.1,300.44 -63.1,300.96 -63.1,301.48 -63.1,302 -63.1,302.52 -63.1,303.04 -63.1,303.56 -63.1,304.08 -63.1,304.6 -63.1,304.6 -63.29,304.6 -63.48,304.6 -63.67,304.6 -63.86,304.6 -64.05,304.6 -64.24,304.6 -64.43,304.6 -64.62,304.6 -64.81,304.6 -65,304.08 -65,303.56 -65,303.04 -65,302.52 -65,302 -65,301.48 -65,300.96 -65,300.44 -65,299.92 -65,299.4 -65,299.4 -64.81,299.4 -64.62,299.4 -64.43,299.4 -64.24,299.4 -64.05,299.4 -63.86,299.4 -63.67,299.4 -63.48,299.4 -63.29,299.4 -63.1))"], "date_created": "Sun, 17 Dec 2017 00:00:00 GMT", "description": "Ice-shelf loss along the east coast of the Antarctic Peninsula over recent decades has brought new sources of carbon and energy to the marine benthos likely affecting sediment geochemistry and microbial community composition. To better understand the long-term effects of ice-shelf loss on benthic microbial communities, we conducted a five-station survey along a 160 km transect following the historic path of retreat of the Larsen A ice shelf. All microbial community sequence data is publicly available through the Metagenomics Analysis Server at Argonne National Laboratory (MG-RAST). The project title is \"Impact of ice-shelf loss on geochemical profiles and microbial community composition in marine sediments of the Larsen A embayment, Antarctic Peninsula\". A key word search using terms from this title at the MG-RAST portal (http://metagenomics.anl.gov/) will return the complete sample list. This submitted dataset summarizes the measured environmental parameters for these same samples (lat., long., water depth, sediment depth, pH, alkalinity, dissolved oxygen, silicate, phosphate, nitrate, nitrite, and ammonium).", "east": 304.6, "geometry": ["POINT(-58 -64.05)"], "keywords": "Antarctica; Antarctic Peninsula; Chemistry:ice; Chemistry:Ice; Geochemistry; Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; Ice Core Records; LARISSA; Microbiology", "locations": "Antarctic Peninsula; Antarctica", "north": -63.1, "nsf_funding_programs": "Antarctic Integrated System Science", "persons": "McCormick, Michael", "project_titles": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach - Marine Ecosystems.", "projects": [{"proj_uid": "p0010135", "repository": "USAP-DC", "title": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach - Marine Ecosystems."}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "LARISSA: Impact of ice-shelf loss on geochemical profiles and microbial community composition in marine sediments of the Larsen A embayment, Antarctic Peninsula", "uid": "601073", "west": 299.4}, {"awards": "0732983 Vernet, Maria", "bounds_geometry": ["POLYGON((-66 -62,-65.3 -62,-64.6 -62,-63.9 -62,-63.2 -62,-62.5 -62,-61.8 -62,-61.1 -62,-60.4 -62,-59.7 -62,-59 -62,-59 -62.8,-59 -63.6,-59 -64.4,-59 -65.2,-59 -66,-59 -66.8,-59 -67.6,-59 -68.4,-59 -69.2,-59 -70,-59.7 -70,-60.4 -70,-61.1 -70,-61.8 -70,-62.5 -70,-63.2 -70,-63.9 -70,-64.6 -70,-65.3 -70,-66 -70,-66 -69.2,-66 -68.4,-66 -67.6,-66 -66.8,-66 -66,-66 -65.2,-66 -64.4,-66 -63.6,-66 -62.8,-66 -62))"], "date_created": "Wed, 01 Jan 2014 00:00:00 GMT", "description": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach - Marine Ecosystems. A profound transformation in ecosystem structure and function is occurring in coastal waters of the western Weddell Sea, with the collapse of the Larsen B ice shelf. This transformation appears to be yielding a redistribution of energy flow between chemoautotrophic and photosynthetic production, and to be causing the rapid demise of the extraordinary seep ecosystem discovered beneath the ice shelf. This event provides an ideal opportunity to examine fundamental aspects of ecosystem transition associated with climate change. We propose to test the following hypotheses to elucidate the transformations occurring in marine ecosystems as a consequence of the Larsen B collapse: (1) The biogeographic isolation and sub-ice shelf setting of the Larsen B seep has led to novel habitat characteristics, chemoautotrophically dependent taxa and functional adaptations. (2) Benthic communities beneath the former Larsen B ice shelf are fundamentally different from assemblages at similar depths in the Weddell sea-ice zone, and resemble oligotrophic deep-sea communities. Larsen B assemblages are undergoing rapid change. (3) The previously dark, oligotrophic waters of the Larsen B embayment now support a thriving phototrophic community, with production rates and phytoplankton composition similar to other productive areas of the Weddell Sea. To document rapid changes occurring in the Larsen B ecosystem, we will use a remotely operated vehicle, shipboard samplers, and moored sediment traps. We will characterize microbial, macrofaunal and megafaunal components of the seep community; evaluate patterns of surface productivity, export flux, and benthic faunal composition in areas previously covered by the ice shelf, and compare these areas to the open sea-ice zone. These changes will be placed within the geological, glaciological and climatological context that led to ice-shelf retreat, through companion research projects funded in concert with this effort. Together these projects will help predict the likely consequences of ice-shelf collapse to marine ecosystems in other regions of Antarctica vulnerable to climate change. The research features international collaborators from Argentina, Belgium, Canada, Germany, Spain and the United Kingdom. The broader impacts include participation of a science writer; broadcast of science segments by members of the Jim Lehrer News Hour (Public Broadcasting System); material for summer courses in environmental change; mentoring of graduate students and postdoctoral fellows; and showcasing scientific activities and findings to students and public through podcasts.\n", "east": -59.0, "geometry": ["POINT(-62.5 -66)"], "keywords": "Antarctica; Antarctic Peninsula; Araon1304; Biota; LARISSA; Larsen B Ice Shelf; NBP1001; NBP1203; Oceans; Physical Oceanography; Southern Ocean; Weddell Sea", "locations": "Antarctic Peninsula; Weddell Sea; Larsen B Ice Shelf; Southern Ocean; Antarctica", "north": -62.0, "nsf_funding_programs": null, "persons": "Vernet, Maria", "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": -70.0, "title": "Abrupt Environmental Change in the Larsen Ice Shelf System (LARISSA) - Marine Ecosystems", "uid": "600073", "west": -66.0}, {"awards": "0732655 Mosley-Thompson, Ellen", "bounds_geometry": ["POLYGON((-63 -60,-62.6 -60,-62.2 -60,-61.8 -60,-61.4 -60,-61 -60,-60.6 -60,-60.2 -60,-59.8 -60,-59.4 -60,-59 -60,-59 -60.5,-59 -61,-59 -61.5,-59 -62,-59 -62.5,-59 -63,-59 -63.5,-59 -64,-59 -64.5,-59 -65,-59.4 -65,-59.8 -65,-60.2 -65,-60.6 -65,-61 -65,-61.4 -65,-61.8 -65,-62.2 -65,-62.6 -65,-63 -65,-63 -64.5,-63 -64,-63 -63.5,-63 -63,-63 -62.5,-63 -62,-63 -61.5,-63 -61,-63 -60.5,-63 -60))"], "date_created": "Tue, 01 Jan 2013 00:00:00 GMT", "description": "Like no other region on Earth, the northern Antarctic Peninsula represents a spectacular natural laboratory of climate change and provides the opportunity to study the record of past climate and ecological shifts alongside the present-day changes in one of the most rapidly warming regions on Earth. This award supported the cryospheric and oceanographic components of an integrated multi-disciplinary program to address these rapid and fundamental changes now taking place in Antarctic Peninsula (AP). By making use of a marine research platform (the RV NB Palmer and on-board helicopters) and additional logistical support from the Argentine Antarctic program, the project brought together glaciologists, oceanographers, marine geologists and biologists who have worked collaboratively to address fundamental interdisciplinary questions regarding climate change.", "east": -59.0, "geometry": ["POINT(-61 -62.5)"], "keywords": "Antarctica; Antarctic Peninsula; Bruce Plateau; Glaciology; Ice Core Records; Isotope; LARISSA; Paleoclimate; Sample/collection Description; Sample/Collection Description; Snow Accumulation", "locations": "Antarctic Peninsula; Bruce Plateau; Antarctica", "north": -60.0, "nsf_funding_programs": null, "persons": "Thompson, Lonnie G.; Mosley-Thompson, Ellen", "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": -65.0, "title": "Abrupt Environmental Change in the Larsen Ice Shelf System (LARISSA) - Cryosphere and Oceans", "uid": "600167", "west": -63.0}]

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