Measuring Snow Structure and Resistance With a High-Resolution Penetrometer

Details Measuring Snow Structure and Resistance With a High-Resolution Penetrometer Measuring Snow Structure and Resistance With a High-Resolution Penetrometer

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998lpico.953r..32s&link_type=abstract

The First International Conference on Mars Polar Science and Exploration, Proceedings of the Conference held at Camp Allen, TX.

Physics

High Resolution, Mars Surface, Penetrometers, Polar Caps, Snow, Crystals, Mars (Planet), Micromechanics, Carbon Dioxide

Scientific paper

It is possible that the polar cap of Mars is covered by CO2 snow or ice. The measurement of mechanical properties of snow is extremely difficult because of the pronounced spatial variability and often very thin layers. In addition, the often very fragile structure makes usual mechanical tests difficult to apply. We developed a high-resolution penetrometer that measures the penetration resistance for each 4 MIcrons. From the recorded force signal we are able to infer (1) micromechanical information about the bonding of the snow crystals, (2) microstructural information about the distance between bonds, and, indirectly, (3) the size of the snow crystals.

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