Earth  ID: 4888

Antarctic Ocean Flows: an excerpt from Atlas of a Changing Earth (4k format)

In this visualization of Antarctica, we cruise along the coastline of the Amundsen Sea from Cape Dart to the Pine Island Glacier. Initially we pass the massive Getz Ice Shelf on our right stretching over 300 miles (500 km) along the coast. As we approach the Smith Glacier and the Dotson Ice Shelf, the sea surface becomes transparent allowing us to see the ocean flows moving under the surface. These flows portray the direction, speed and temperature of the ocean circulation based on version 3 of the ECCO ocean circulation model. The flows are colored by temperature, spanning the range from 29.75 degrees fahrenheit (-1.25 degrees celsius) shown in blue to 34.25 degrees fahrenheit (+1.25 degrees celsius) shown in red. We see the ocean flows circulating around the Pine Island Bay and under the adjacent floating ice tongue of the Thwaites Glacier.

As we approach the Pine Island Glacier, we dip below the surface of the bay and see the stratification of the temperature in the ocean flows, with the coldest water shown in blue near the surface and the warmer water shown in red at lower depths. We move forward under the floating ice of the Pine Island Glacier and see how the warmer ocean flows are circulating under the glacier's floating tongue, eroding the ice from beneath.

The topography in this visualization has been exaggerated by 4x above sea level and 15x below sea level in order to more clearly observe the change in ocean temperature at various depths.

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Visualization Credits

Thomas Lucas (Thomas Lucas Productions)

Lead Data Visualizer:
Cindy Starr (GST)

Data Visualizers:
Horace Mitchell (NASA/GSFC)
Greg Shirah (NASA/GSFC)
Ernie Wright (USRA)

Technical Support:
Laurence Schuler (ADNET)
Ian Jones (ADNET)

Project Support:
Leann Johnson (GST)
Eric Sokolowsky (GST)

Steven Reilly

Music Composer:
John Avarese

Please give credit for this item to:
NASA's Scientific Visualization Studio

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Data Used:
Landsat-7/ETM+/Landsat Image Mosaic of Antarctica also referred to as: LIMA
Mosaic - NASA/GSFC, British Antarctic Survey, USGS EROS Data Center
Mosaicing to avoid clouds produced a high quality, nearly cloud-free benchmark data set of Antarctica for the International Polar Year from images collected primarily during 1999-2003.
ECCO3 High Resolution Ocean and Sea Ice Model
Model - NASA/JPL
Landsat 8/OLI/Mosaic of Amundsen Sea Embayment, Antarctica
An image mosaic comprised of 20 LandSat 8 tiles on the Amundsen Sea Embayment, Antarctica
Landsat 8 mission
BedMachine Antarctica V1
Data Compilation
A self-consistent dataset of the Antarctic Ice Sheet based on the conservation of mass
Morlighem, M., Rignot, E., Binder, T. et al. Deep glacial troughs and stabilizing ridges unveiled beneath the margins of the Antarctic ice sheet. Nature Geoscience 13, 132–137 (2020)
Reference Elevation Model of Antarctica - 100m also referred to as: REMA
Data Compilation - The Polar Geospatial Center (PGC)
High resolution, time-stamped Digital Surface Model (DSM) of Antarctica at 100-meter spatial resolution
DEMs provided by the Byrd Polar and Climate Research Center and the Polar Geospatial. Computer time provided through a Blue Waters Innovation Initiative. DEMs produced using data from DigitalGlobe, Inc.
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

SVS >> Ice Shelf
DLESE >> Physical oceanography
GCMD >> Earth Science >> Cryosphere >> Glaciers/Ice Sheets
GCMD >> Earth Science >> Hydrosphere >> Glaciers/Ice Sheets
GCMD >> Earth Science >> Oceans >> Ocean Circulation
GCMD >> Earth Science >> Cryosphere >> Glaciers/Ice Sheets >> Glacier Thickness/Ice Sheet Thickness
GCMD >> Earth Science >> Hydrosphere >> Glaciers/Ice Sheets >> Glacier Thickness/Ice Sheet Thickness
GCMD >> Earth Science >> Hydrosphere >> Glaciers/Ice Sheets >> Glaciers
GCMD >> Earth Science >> Oceans >> Ocean Circulation >> Ocean Currents
SVS >> Hyperwall
SVS >> Glaciers
NASA Science >> Earth

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version