2b379917-e576-46bc-9af1-d9d16de5db85 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-11-17T09:26:00 creation ISO 19115 2016 Totten Glacier Ice Shelf cavity bathymetry 2b379917-e576-46bc-9af1-d9d16de5db85 This is a derived product containing two products blended together that describes the elevation of the seafloor beneath and out to approximately seaward of the Totten Glacier Ice Shelf cavity as well as the elevation of the ice bottom beneath the ice sheet immediately sounding the ice shelf cavity. The seafloor was inferred by inverting airborne gravity observations; the terrain beneath grounded ice was observed with airborne ice sounding radar measurements. The two products were blended along the grounding line observed with satellite observations [Rignot, E., Mouginot, J. and Scheuchl, B. Antarctic grounding line mapping from differential satellite radar interferometry. Geophys. Res. Lett. 38, L10504 (2011)]. We have provided a text file that contains three columns that may be used to produce a gridded bathymetry of the Totten Glacier Ice Shelf and surrounding area with a cell size of 1-km. The first two columns contain grid coordinates using the Polar Stereographic projection based on WGS84 with true scale at 71 degrees S. The third column contains the vertical coordinate representing the seafloor beneath and the ice-bottom elevation around the Totten Glacier Ice Shelf cavity. The center of the region is located near 115E and 67S and spans an area about 217 km by 131 km. The data are described in detail in the publication and supplementary materials that can be found by following this link: http://www.nature.com/ngeo/journal/v8/n4/abs/ngeo2388.html#supplementary-information {"type": "Polygon", "coordinates": [[[112.5, -68.0], [118.0, -68.0], [118.0, -66.0], [112.5, -66.0], [112.5, -68.0]]]} 112.5 118.0 -68.0 -66.0 AIRCRAFT AMD AMD/AU Bathymetry CEOS CONTINENT > ANTARCTICA > Totten Glacier Cavity EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > ICE SHEETS EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > ICE SHEETS > ICE SHEET MEASUREMENTS EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY GEOGRAPHIC REGION > POLAR Ice Sheet OCEAN > SOUTHERN OCEAN > Totten Glacier SATELLITES Totten Glacier GET DATA documentDigital Download point for the data HTML PROJECT HOME PAGE documentDigital Public information for AAS project 4077 HTML VIEW RELATED INFORMATION documentDigital Citation reference for this metadata record and dataset. HTML Creative Commons by Attribution logo documentDigital PNG