A possible second large subglacial impact crater in northwest Greenland
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- Visualizations by:
- Cindy Starr
- View full credits
As this visualization draws near to the northwest coast of Greenland where the Hiawatha Glacier is located, the ice sheet is cut away to show the topography of Greenland's bedrock lying beneath the ice sheet at 20x vertical exaggeration. The Hiawatha crater is clearly visible in the topography. Farther inland another, subtler circular depression can be seen. The edge picks of this depression are shown as vertical bars, while potential central peaks are marked by orange pyramids. As we rotate around the depression, the location of the best-fit circle to the edge picks appears and that circle's center is marked with an "X". This circle matches well with both the edge of the bedrock depression and also the residual slope of the ice surface as it flows over this depression (not shown), strongly supporting the inference that this depression is another large impact crater.
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Credits
Please give credit for this item to:
NASA's Scientific Visualization Studio
The Blue Marble data is courtesy of Reto Stockli (NASA/GSFC).
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Visualizer
- Cindy Starr (Global Science and Technology, Inc.) [Lead]
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Project support
- Eric Sokolowsky (GST)
- Joycelyn Thomson Jones (NASA/GSFC)
- Leann Johnson (Global Science and Technology, Inc.)
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Technical support
- Ian Jones (ADNET Systems, Inc.)
- Laurence Schuler (ADNET Systems, Inc.)
Papers
This visualization is based on the following papers:- MacGregor, J. A., Bottke, W. F., Jr, Fahnestock, M. A., Harbeck, J. P., Kjær, K. H., Paden, J. D., Stillman, D. E., & Studinger, M. (2018). A possible second large subglacial impact crater in northwest Greenland. Geophysical Research Letters, 45. https://doi.org/10.1029/2018GL078126
Datasets used in this visualization
SHIZUKU (GCOM-W1) 10 km Daily 89 GHz Brightness Temperature (Collected with the AMSR2 sensor)
Credit: AMSR2 data courtesy of the Japan Aerospace Exploration Agency (JAXA).
See more visualizations using this data setSHIZUKU (GCOM-W1) 10 km Daily Sea Ice Concentration (Collected with the AMSR2 sensor)
Credit: AMSR2 data courtesy of the Japan Aerospace Exploration Agency (JAXA).
See more visualizations using this data setBedMachine V3: Bed Topography and Ocean Bathymetry of Greenland (A.K.A. BedMachine V3: Bed Topography and Ocean Bathymetry of Greenland)
A new compilation of Greenland bed topography that assimilates seafloor bathymetry and ice thickness data through a mass conservation approach.
See more visualizations using this data setTerra and Aqua BMNG (A.K.A. Blue Marble: Next Generation) (Collected with the MODIS sensor)
Credit: The Blue Marble data is courtesy of Reto Stockli (NASA/GSFC).
Dataset can be found at: http://earthobservatory.nasa.gov/Newsroom/BlueMarble/
See more visualizations using this data setTERRA MODIS Mosaic of Greenland (MOG) Image Map (Collected with the MODIS sensor)
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.