Subsurface Radar Sounding of the South Polar Layered Deposits of Mars-Reference-Cited by-同舟云学术

Subsurface Radar Sounding of the South Polar Layered Deposits of Mars

Published:2007-04-06 Issue:5821 Volume:316 Page:92-95
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Plaut Jeffrey J.¹²³⁴⁵,Picardi Giovanni¹²³⁴⁵,Safaeinili Ali¹²³⁴⁵,Ivanov Anton B.¹²³⁴⁵,Milkovich Sarah M.¹²³⁴⁵,Cicchetti Andrea¹²³⁴⁵,Kofman Wlodek¹²³⁴⁵,Mouginot Jérémie¹²³⁴⁵,Farrell William M.¹²³⁴⁵,Phillips Roger J.¹²³⁴⁵,Clifford Stephen M.¹²³⁴⁵,Frigeri Alessandro¹²³⁴⁵,Orosei Roberto¹²³⁴⁵,Federico Costanzo¹²³⁴⁵,Williams Iwan P.¹²³⁴⁵,Gurnett Donald A.¹²³⁴⁵,Nielsen Erling¹²³⁴⁵,Hagfors Tor¹²³⁴⁵,Heggy Essam¹²³⁴⁵,Stofan Ellen R.¹²³⁴⁵,Plettemeier Dirk¹²³⁴⁵,Watters Thomas R.¹²³⁴⁵,Leuschen Carlton J.¹²³⁴⁵,Edenhofer Peter¹²³⁴⁵

Affiliation:

1. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.

2. Infocom Department, “La Sapienza” University of Rome, 00184 Rome, Italy.

3. Laboratoire de Planetologie de Grenoble, 38041 Grenoble Cedex, France.

4. NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA.

5. Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, USA.

Abstract

The ice-rich south polar layered deposits of Mars were probed with the Mars Advanced Radar for Subsurface and Ionospheric Sounding on the Mars Express orbiter. The radar signals penetrate deep into the deposits (more than 3.7 kilometers). For most of the area, a reflection is detected at a time delay that is consistent with an interface between the deposits and the substrate. The reflected power from this interface indicates minimal attenuation of the signal, suggesting a composition of nearly pure water ice. Maps were generated of the topography of the basal interface and the thickness of the layered deposits. A set of buried depressions is seen within 300 kilometers of the pole. The thickness map shows an asymmetric distribution of the deposits and regions of anomalous thickness. The total volume is estimated to be 1.6 × 10 6 cubic kilometers, which is equivalent to a global water layer approximately 11 meters thick.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference23 articles.

1. P. C. Thomas, K. Herkenhoff, A. Howard, B. Murray, in Mars, H. H. Kieffer et al., Eds. (Univ. of Arizona Press, Tucson, AZ, 1992), pp. 767–795.

2. Mars Orbiter Laser Altimeter: Experiment summary after the first year of global mapping of Mars

3. Geological framework of the south polar region of Mars

4. Nature and origin of layered deposits of the Martian polar regions

5. Topography and stratigraphy of Martian polar layered deposits

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