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Accession Number N20130009098
Title Periglacial Analog for Landforms in Gale Crater, Mars.
Publication Date 2013
Media Count 2p
Personal Author D. Z. Oehler
Abstract Several features in a high thermal inertia (TI) unit at Gale crater can be interpreted within a periglacial framework. These features include polygonally fractured terrain (cf. ice-wedge polygons), circumferential patterns of polygonal fractures (cf. relict pingos with ice-wedge polygons on their surfaces), irregularly-shaped and clustered depressions (cf. remnants of collapsed pingos and ephemeral lakes), and a general hummocky topography (cf. thermokarst). This interpretation would imply a major history of water and ice in Gale crater, involving permafrost, freeze-thaw cycles, and perhaps ponded surface water.
Keywords Cycles
Mars craters
Surface water
Thermal emission

Source Agency National Aeronautics and Space Administration
NTIS Subject Category 55A - Aeronomy
54A - Astrogeology
Corporate Author National Aeronautics and Space Administration, Houston, TX. Lyndon B. Johnson Space Center.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1319
Contract Number N/A

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