Computer Science – Sound
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufm.p11d..07c&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #P11D-07
Computer Science
Sound
[5464] Planetary Sciences: Solid Surface Planets / Remote Sensing
Scientific paper
Remote sensing by Earth-based and orbiting instruments has provided a wealth of information on the geologic and climate history of Mars that bears directly on the question of past and current habitability. Recent experience with radar imaging and sounding of the Moon, terrestrial arid regions and glaciers, and volcanic, sedimentary, and polar layered deposits of Mars shows that a significant part of the geologic record is recorded in features buried by mantling debris, layering due to ice property variations, and in the physical nature of deposits formed by volcanism, sedimentation, or impact. Global information on martian near-surface features and physical properties represents a great untapped aspect of the search for habitable zones and evidence of past climate. Imaging radar measurements at wavelengths of 30-60 cm can penetrate several meters of mantling material and 10 m or more into ice, and a highly capable synthetic aperture radar (SAR) instrument is well within the scope of a Discovery or Scout-class mission. We will present recent results from the SHARAD sounder relevant to the expected probing depth of such a SAR, and examples from long-wavelength radar imaging of the Moon that demonstrate the geologic insights offered by a high-resolution, multi-polarization view of variations in subsurface echoes.
Campbell Bruce A.
Freeman Anthony
Grant Alex J.
Plaut Jeffrey J.
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