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- Jeffrey J. Plaut
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Giovanni Picardi
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Ali Safaeinili
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Anton B. Ivanov
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Sarah M. Milkovich
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Andrea Cicchetti
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Wlodek Kofman
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Jérémie Mouginot
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- William M. Farrell
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Roger J. Phillips
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Stephen M. Clifford
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Alessandro Frigeri
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Roberto Orosei
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Costanzo Federico
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Iwan P. Williams
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Donald A. Gurnett
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Erling Nielsen
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Tor Hagfors
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Essam Heggy
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Ellen R. Stofan
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Dirk Plettemeier
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Thomas R. Watters
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Carlton J. Leuschen
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
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- Peter Edenhofer
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
書誌事項
- 公開日
- 2007-04-06
- DOI
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- 10.1126/science.1139672
- 公開者
- American Association for the Advancement of Science (AAAS)
この論文をさがす
説明
<jats:p> 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 <jats:sup>6</jats:sup> cubic kilometers, which is equivalent to a global water layer approximately 11 meters thick. </jats:p>
収録刊行物
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- Science
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Science 316 (5821), 92-95, 2007-04-06
American Association for the Advancement of Science (AAAS)
