[{"awards": "1744885 Moline, Mark", "bounds_geometry": ["POLYGON((-64.12 -64.76,-64.084 -64.76,-64.048 -64.76,-64.012 -64.76,-63.976 -64.76,-63.94 -64.76,-63.904 -64.76,-63.868 -64.76,-63.832 -64.76,-63.796 -64.76,-63.76 -64.76,-63.76 -64.77300000000001,-63.76 -64.786,-63.76 -64.799,-63.76 -64.812,-63.76 -64.825,-63.76 -64.83800000000001,-63.76 -64.851,-63.76 -64.864,-63.76 -64.877,-63.76 -64.89,-63.796 -64.89,-63.832 -64.89,-63.868 -64.89,-63.904 -64.89,-63.94 -64.89,-63.976 -64.89,-64.012 -64.89,-64.048 -64.89,-64.084 -64.89,-64.12 -64.89,-64.12 -64.877,-64.12 -64.864,-64.12 -64.851,-64.12 -64.83800000000001,-64.12 -64.825,-64.12 -64.812,-64.12 -64.799,-64.12 -64.786,-64.12 -64.77300000000001,-64.12 -64.76))"], "date_created": "Mon, 11 May 2026 00:00:00 GMT", "description": "During the 2022-2023 Antarctic penguin breeding season, we used a newly developed echosounder payload on autonomous underwater vehicles as part of this program to sample krill at fine resolution. Diving as deep as 75m and then utilizing a triangle depth pattern near the highest densities, the AUVs sampled the oceanography within the prey fields. Twenty-four AUV science sampling missions took place during the 2022-23 field season in various environments and conditions. These observations were paired with new video recording tags carried by the penguins to provide a unique in situ perspective on the Antarctic habitat. These observations reveal an abundance of small-scale krill patches in the habitat that were used by foraging penguins. These krill patches would likely be missed from surface-based observations. \r\n\u003cbr/\u003eThese fine scale observations were only possible during one field season because of restrictions due to the COVID-19 pandemic (2020-21 ), pier construction at Palmer Station (2021-22) and subsequent heat-loop project (2023-24). To provide context to these detailed observations and in a separate effort, our team is analyzed echosounder data collected over a number of years (2018-2024) from a surface RHIB as part of the Palmer Long-Term Ecological Research program. These data were collected by the LTER team within habitat zones used by foraging penguins during the breeding season designed to elucidate linkages between the predators and prey. The LTER has lacked dedicated personnel with the expertise to analyze and interpret these particular results over the full time-series, so this analysis was conducted as part of this project in lieu of the single field season at Palmer Station for reasons stated above.", "east": -63.76, "geometry": ["POINT(-63.94 -64.825)"], "keywords": "Antarctica; AUV; Cryosphere; CTD; Fluorescence; Irradiance ; Oceans; Palmer Station; Salinity; Temperature; Turbidity", "locations": "Palmer Station; Antarctica", "north": -64.76, "nsf_funding_programs": "Antarctic Integrated System Science", "persons": "Moline, Mark", "project_titles": "Collaborative Research: Linking Predator Behavior and Resource Distributions: Penguin-directed Exploration of an Ecological Hotspot", "projects": [{"proj_uid": "p0010347", "repository": "USAP-DC", "title": "Collaborative Research: Linking Predator Behavior and Resource Distributions: Penguin-directed Exploration of an Ecological Hotspot"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.89, "title": "Ancillary Instrument measures via AUV - Palmer Summer 2022-2023 B-308-P", "uid": "602056", "west": -64.12}, {"awards": "1744584 Klein, Andrew", "bounds_geometry": ["POLYGON((-70 -61,-69 -61,-68 -61,-67 -61,-66 -61,-65 -61,-64 -61,-63 -61,-62 -61,-61 -61,-60 -61,-60 -61.8,-60 -62.6,-60 -63.4,-60 -64.2,-60 -65,-60 -65.8,-60 -66.6,-60 -67.4,-60 -68.2,-60 -69,-61 -69,-62 -69,-63 -69,-64 -69,-65 -69,-66 -69,-67 -69,-68 -69,-69 -69,-70 -69,-70 -68.2,-70 -67.4,-70 -66.6,-70 -65.8,-70 -65,-70 -64.2,-70 -63.4,-70 -62.6,-70 -61.8,-70 -61))"], "date_created": "Thu, 29 Dec 2022 00:00:00 GMT", "description": "This csv dataset contains diffuse attenuation coefficients (units: m-1) from the Visible Infrared Imaging Radiometer Suite (VIIRS) Kd(490) product. The values are from the nearest corresponding pixels from the fifteen study sites associated with visited by projects ANT-1744550, -1744570, -1744584, and -1744602 during ARSV Laurence M. Gould cruise LMG 19-04 in April and May 2019. \r\nThese attenuation coefficients were generated by the NOAA CoastWatch/OceanWatch program. They are remote sensing estimates of diffuse attenuation coefficients at a 490 nm wavelength in for approximately 4x4 km cells using the algorithm described in (Wang et al., 2017).\r\nThe dataset includes January-February-March (JFM), October-November-December (OND) as well as October to March averages for each site. OND averages are not available for all sites and therefore are not included in the October-March averages. An indication of the distance from the site to the nearest pixel with a Kd(490) observation is noted.\r\nWang, M., X. Liu, L. Jiang, and S. Son. 2017. Algorithm Theoretical Basis Document (ATBD), The VIIRS Ocean Color Products, Algorithm Theoretical Basis Document Version 1.0.", "east": -60.0, "geometry": ["POINT(-65 -65)"], "keywords": "Antarctica; Biota; Diffuse Attenuation Coefficient; LMG1904; R/v Laurence M. Gould; Turbidity", "locations": "Antarctica", "north": -61.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Klein, Andrew", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -69.0, "title": "VIIRS KD(490) diffuse attenuation coefficients for study sites", "uid": "601640", "west": -70.0}, {"awards": "0742057 Gallager, Scott", "bounds_geometry": ["POLYGON((-168.291 -64.846,-165.018 -64.846,-161.745 -64.846,-158.472 -64.846,-155.199 -64.846,-151.926 -64.846,-148.653 -64.846,-145.38 -64.846,-142.107 -64.846,-138.834 -64.846,-135.561 -64.846,-135.561 -66.0269,-135.561 -67.2078,-135.561 -68.3887,-135.561 -69.5696,-135.561 -70.7505,-135.561 -71.9314,-135.561 -73.1123,-135.561 -74.2932,-135.561 -75.4741,-135.561 -76.655,-138.834 -76.655,-142.107 -76.655,-145.38 -76.655,-148.653 -76.655,-151.926 -76.655,-155.199 -76.655,-158.472 -76.655,-161.745 -76.655,-165.018 -76.655,-168.291 -76.655,-168.291 -75.4741,-168.291 -74.2932,-168.291 -73.1123,-168.291 -71.9314,-168.291 -70.7505,-168.291 -69.5696,-168.291 -68.3887,-168.291 -67.2078,-168.291 -66.0269,-168.291 -64.846))"], "date_created": "Thu, 01 Jan 2009 00:00:00 GMT", "description": "The research will continue and extend the study in the Southern Ocean that was initiated during the Oden Southern Ocean 2006 expedition in collaboration with Swedish scientist Mellissa Chierici. We will quantify carbon flux through the food web in the marginal ice zone (MIZ) by measuring size fractionated primary and secondary production, grazing and carbon flux through nanoplankton (2-20 um), microplankton (20-200um), and mesoplankton (200-2000 um). Community structure, species abundance and size specific grazing rates will be quantified using a variety of techniques both underway and at ice stations along the MIZ. The proposed cruise track extends across the Drake Passage to the Western Antarctic Peninsula (WAP) with three station transects along a gradient from the open ocean through the marginal ice zone (MIZ) in the Bellinghausen and Amundsen Seas and into the Ross Sea Polynya. Ice stations along each transect will provide material to characterize production associated with annual ice. Underway measurements of primary and secondary production (chlorophyll, CDOM, microplankton, and mesoplankton) and hydrography (temperature, salinity, pH, DO, turbidity) will establish a baseline for future cruises and as support for other projects such as biogeochemical studies on carbon dioxide drawdown and trace metal work on primary production. The outcome of these measurements will be a description of nano to mesoplankton standing stocks, community structure, and carbon flux along the MIZ in the Bellinghausen and Amundsen Seas and the Ross Sea Polynya.", "east": -135.561, "geometry": ["POINT(-151.926 -70.7505)"], "keywords": "Amundsen Sea; Biota; Microbiology; Navigation; Oceans; Oden; OSO2007; Sample/collection Description; Sample/Collection Description; Southern Ocean", "locations": "Amundsen Sea; Southern Ocean", "north": -64.846, "nsf_funding_programs": null, "persons": "Dennett, Mark; Gallager, Scott", "project_titles": "SGER: Primary and Secondary Production and Carbon Flux Through the Microbial Community Along the Western Antarctic Marginal Ice Zone on the Oden Southern Ocean 2007 Expeditions", "projects": [{"proj_uid": "p0000563", "repository": "USAP-DC", "title": "SGER: Primary and Secondary Production and Carbon Flux Through the Microbial Community Along the Western Antarctic Marginal Ice Zone on the Oden Southern Ocean 2007 Expeditions"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -76.655, "title": "SGER: Primary and Secondary Production and Carbon Flux Through the Microbial Community Along the Western Antarctic Marginal Ice Zone on the Oden Southern Ocean 2007 Expeditions", "uid": "600086", "west": -168.291}]

Help on the Results MapX

This window can be dragged by its header, and can be resized from the bottom right corner.

The Results Map and the Results Table

The Results Map displays the centroids of the geographic bounds of all the results returned by the search.
Results that are displayed in the current map view will be highlighted in blue and brought to the top of the Results Table.
As the map is panned or zoomed, the highlighted rows in the table will update.
If you click on a centroid on the map, it will turn yellow and display a popup with details for that project/dataset - including a link to the landing page. The bounds for the project(s)/dataset(s) selected will be displayed in red. The selected result(s) will be highlighted in red and brought to the top of the table.
The default table sorting order is: Selected, Visible, Date (descending), but this can be changed by clicking on column headers in the table.
Selecting Show on Map for an individual row will both display the geographic bounds for that result on a mini map, and also display the bounds and highlight the centroid on the Results Map.
Clicking the 'Show boundaries' checkbox at the top of the Results Map will display all the bounds for the filtered results.

Defining a search area on the Results Map

If you click on the Rectangle or Polygon icons in the top right of the Results Map, you can define a search area which will be added to any other search criteria already selected.
After you have drawn a polygon, you can edit it using the Edit Geometry dropdown in the search form at the top.
Clicking Clear in the map will clear any drawn polygon.
Clicking Search in the map, or Search on the form will have the same effect.
The returned results will be any projects/datasets with bounds that intersect the polygon.
Use the Exclude project/datasets checkbox to exclude any projects/datasets that cover the whole Antarctic region.

Viewing map layers on the Results Map

Clicking the Layers button - the blue square in the top left of the Results Map - will display a list of map layers you can add or remove from the currently displayed map view.

Search USAP-DC Datasets

Free Text Search

Title (free text)

Science Program

Person

Award

NSF Funding Program

Spatial Bounds of Data Use the Results Map below to draw a polygon over the required search area, or edit the WKT geometry here:

Any WKT polygon, with longitudes in a 0-360 ° range. Example: Ross Sea is between 160 and 210. Read about the WKT format here.

Exclude datasets that cover the whole Antarctic from map-based search

3 record(s) found

To sort the table of search results, click the header of the column you wish to search by. To sort by multiple columns, hold down the shift key whilst selecting the sort columns in order.

Dataset Title/Abstract/Map	NSF Award(s)	Date Created	PIs / Scientists	Project Links	Abstract	Bounds Geometry	Geometry	Selected	Visible
Ancillary Instrument measures via AUV - Palmer Summer 2022-2023 B-308-P	1744885	2026-05-11	Moline, Mark	Collaborative Research: Linking Predator Behavior and Resource Distributions: Penguin-directed Exploration of an Ecological Hotspot	During the 2022-2023 Antarctic penguin breeding season, we used a newly developed echosounder payload on autonomous underwater vehicles as part of this program to sample krill at fine resolution. Diving as deep as 75m and then utilizing a triangle depth pattern near the highest densities, the AUVs sampled the oceanography within the prey fields. Twenty-four AUV science sampling missions took place during the 2022-23 field season in various environments and conditions. These observations were paired with new video recording tags carried by the penguins to provide a unique in situ perspective on the Antarctic habitat. These observations reveal an abundance of small-scale krill patches in the habitat that were used by foraging penguins. These krill patches would likely be missed from surface-based observations. <br/>These fine scale observations were only possible during one field season because of restrictions due to the COVID-19 pandemic (2020-21 ), pier construction at Palmer Station (2021-22) and subsequent heat-loop project (2023-24). To provide context to these detailed observations and in a separate effort, our team is analyzed echosounder data collected over a number of years (2018-2024) from a surface RHIB as part of the Palmer Long-Term Ecological Research program. These data were collected by the LTER team within habitat zones used by foraging penguins during the breeding season designed to elucidate linkages between the predators and prey. The LTER has lacked dedicated personnel with the expertise to analyze and interpret these particular results over the full time-series, so this analysis was conducted as part of this project in lieu of the single field season at Palmer Station for reasons stated above.	["POLYGON((-64.12 -64.76,-64.084 -64.76,-64.048 -64.76,-64.012 -64.76,-63.976 -64.76,-63.94 -64.76,-63.904 -64.76,-63.868 -64.76,-63.832 -64.76,-63.796 -64.76,-63.76 -64.76,-63.76 -64.77300000000001,-63.76 -64.786,-63.76 -64.799,-63.76 -64.812,-63.76 -64.825,-63.76 -64.83800000000001,-63.76 -64.851,-63.76 -64.864,-63.76 -64.877,-63.76 -64.89,-63.796 -64.89,-63.832 -64.89,-63.868 -64.89,-63.904 -64.89,-63.94 -64.89,-63.976 -64.89,-64.012 -64.89,-64.048 -64.89,-64.084 -64.89,-64.12 -64.89,-64.12 -64.877,-64.12 -64.864,-64.12 -64.851,-64.12 -64.83800000000001,-64.12 -64.825,-64.12 -64.812,-64.12 -64.799,-64.12 -64.786,-64.12 -64.77300000000001,-64.12 -64.76))"]	["POINT(-63.94 -64.825)"]	false	false
VIIRS KD(490) diffuse attenuation coefficients for study sites	1744584	2022-12-29	Klein, Andrew	Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity	This csv dataset contains diffuse attenuation coefficients (units: m-1) from the Visible Infrared Imaging Radiometer Suite (VIIRS) Kd(490) product. The values are from the nearest corresponding pixels from the fifteen study sites associated with visited by projects ANT-1744550, -1744570, -1744584, and -1744602 during ARSV Laurence M. Gould cruise LMG 19-04 in April and May 2019. These attenuation coefficients were generated by the NOAA CoastWatch/OceanWatch program. They are remote sensing estimates of diffuse attenuation coefficients at a 490 nm wavelength in for approximately 4x4 km cells using the algorithm described in (Wang et al., 2017). The dataset includes January-February-March (JFM), October-November-December (OND) as well as October to March averages for each site. OND averages are not available for all sites and therefore are not included in the October-March averages. An indication of the distance from the site to the nearest pixel with a Kd(490) observation is noted. Wang, M., X. Liu, L. Jiang, and S. Son. 2017. Algorithm Theoretical Basis Document (ATBD), The VIIRS Ocean Color Products, Algorithm Theoretical Basis Document Version 1.0.	["POLYGON((-70 -61,-69 -61,-68 -61,-67 -61,-66 -61,-65 -61,-64 -61,-63 -61,-62 -61,-61 -61,-60 -61,-60 -61.8,-60 -62.6,-60 -63.4,-60 -64.2,-60 -65,-60 -65.8,-60 -66.6,-60 -67.4,-60 -68.2,-60 -69,-61 -69,-62 -69,-63 -69,-64 -69,-65 -69,-66 -69,-67 -69,-68 -69,-69 -69,-70 -69,-70 -68.2,-70 -67.4,-70 -66.6,-70 -65.8,-70 -65,-70 -64.2,-70 -63.4,-70 -62.6,-70 -61.8,-70 -61))"]	["POINT(-65 -65)"]	false	false
SGER: Primary and Secondary Production and Carbon Flux Through the Microbial Community Along the Western Antarctic Marginal Ice Zone on the Oden Southern Ocean 2007 Expeditions	0742057	2009-01-01	Dennett, Mark; Gallager, Scott	SGER: Primary and Secondary Production and Carbon Flux Through the Microbial Community Along the Western Antarctic Marginal Ice Zone on the Oden Southern Ocean 2007 Expeditions	The research will continue and extend the study in the Southern Ocean that was initiated during the Oden Southern Ocean 2006 expedition in collaboration with Swedish scientist Mellissa Chierici. We will quantify carbon flux through the food web in the marginal ice zone (MIZ) by measuring size fractionated primary and secondary production, grazing and carbon flux through nanoplankton (2-20 um), microplankton (20-200um), and mesoplankton (200-2000 um). Community structure, species abundance and size specific grazing rates will be quantified using a variety of techniques both underway and at ice stations along the MIZ. The proposed cruise track extends across the Drake Passage to the Western Antarctic Peninsula (WAP) with three station transects along a gradient from the open ocean through the marginal ice zone (MIZ) in the Bellinghausen and Amundsen Seas and into the Ross Sea Polynya. Ice stations along each transect will provide material to characterize production associated with annual ice. Underway measurements of primary and secondary production (chlorophyll, CDOM, microplankton, and mesoplankton) and hydrography (temperature, salinity, pH, DO, turbidity) will establish a baseline for future cruises and as support for other projects such as biogeochemical studies on carbon dioxide drawdown and trace metal work on primary production. The outcome of these measurements will be a description of nano to mesoplankton standing stocks, community structure, and carbon flux along the MIZ in the Bellinghausen and Amundsen Seas and the Ross Sea Polynya.	["POLYGON((-168.291 -64.846,-165.018 -64.846,-161.745 -64.846,-158.472 -64.846,-155.199 -64.846,-151.926 -64.846,-148.653 -64.846,-145.38 -64.846,-142.107 -64.846,-138.834 -64.846,-135.561 -64.846,-135.561 -66.0269,-135.561 -67.2078,-135.561 -68.3887,-135.561 -69.5696,-135.561 -70.7505,-135.561 -71.9314,-135.561 -73.1123,-135.561 -74.2932,-135.561 -75.4741,-135.561 -76.655,-138.834 -76.655,-142.107 -76.655,-145.38 -76.655,-148.653 -76.655,-151.926 -76.655,-155.199 -76.655,-158.472 -76.655,-161.745 -76.655,-165.018 -76.655,-168.291 -76.655,-168.291 -75.4741,-168.291 -74.2932,-168.291 -73.1123,-168.291 -71.9314,-168.291 -70.7505,-168.291 -69.5696,-168.291 -68.3887,-168.291 -67.2078,-168.291 -66.0269,-168.291 -64.846))"]	["POINT(-151.926 -70.7505)"]	false	false

USAP-DC

U.S. ANTARCTIC PROGRAM DATA CENTER

The Results Map and the Results Table

Defining a search area on the Results Map

Viewing map layers on the Results Map

Search USAP-DC Datasets

To sort the table of search results, click the header of the column you wish to search by. To sort by multiple columns, hold down the shift key whilst selecting the sort columns in order.