Using Ground Penetrating Radar to Image Terrestrial Analogs of Martian Aeolian Deposition: The Coral Pink Sand Dunes, Kanab, Utah

Details Using Ground Penetrating Radar to Image Terrestrial Analogs of Martian Aeolian Deposition: The Coral Pink Sand Dunes, Kanab, Utah Using Ground Penetrating Radar to Image Terrestrial Analogs of Martian Aeolian Deposition: The Coral Pink Sand Dunes, Kanab, Utah

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmns41a1125c&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #NS41A-1125

Physics

Geophysics

1835 Hydrogeophysics, 5470 Surface Materials And Properties

Scientific paper

On Mars, wind is the dominant active landscape forming process. The Martian surface contains abundant duneform and other depositional features related to aeolian processes. To investigate the effectiveness of GPR for Martian imaging, we tested GPR on terrestrial analogs for the Martian surface. We collected two, perpendicular, 250 and 500 MHz GPR lines across the active dunefield at the Coral Pink Sand Dunes State Park, Kanab, Utah. The transects crossed dunefield features including barchanoid dunes, interdune swales, the shallow water table, and interdune bedrock exposures. These features provide analogs for a range of potential targets on Mars. The collected data provide detailed images of internal features of the dune such as crossbedding, the water table, and the sand/bedrock contact. Shallow (< 4 m) hand-augered borings, coincident with the GPR transects, provide ground truth for the depth to the water table and shallow bedrock. These measured boundaries coincide with strong, continuous reflections in the GPR data. As expected, the 250 MHz GPR images penetrate more deeply into the dunes, but the 500 MHz images are more detailed. Shallow features (< 10 m) are evident at both frequencies.

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