Subsurface radar sounding of the south polar layered deposits of Mars
In: Science Science, American Association for the Advancement of Science, 2007, 316 (5821), pp.92-95. ⟨10.1126/science.1139672⟩ ResearcherID; (2007)
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Zugriff:
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.
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Subsurface radar sounding of the south polar layered deposits of Mars
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| Autor/in / Beteiligte Person: | Williams, Iwan P. ; Cicchetti, Andrea ; Mouginot, Jeremie ; Ivanov, Anton B. ; Kofman, Wlodek ; Plaut, Jeffrey J. ; Gurnett, Donald A. ; Federico, Constanzo ; Plettemeier, Dirk ; Leuschen, Carlton J. ; Watters, Thomas R. ; Milkovich, S. M. ; Clifford, Stephen M. ; Stofan, Ellen R. ; Hagfors, Tor ; Phillips, Roger J. ; Frigeri, Alessandro ; Heggy, Essam ; Edenhofer, Peter ; Picardi, Giovanni ; Safaeinili, Ali ; Orosei, Roberto ; Farrell, William M. ; Nielsen, Erling ; Jet Propulsion Laboratory (JPL) ; NASA-California Institute of Technology (CALTECH) ; Dipartimento INFOCOM [Roma] ; Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] ; Laboratoire de Planétologie de Grenoble (LPG) ; Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) ; NASA Goddard Space Flight Center (GSFC) ; Department of Earth and Planetary Sciences [St Louis] ; Washington University in Saint Louis (WUSTL) ; Lunar and Planetary Institute [Houston] (LPI) ; Dipartimento di Scienze della Terra ; Università degli Studi di Perugia (UNIPG) ; Istituto di Fisica dello Spazio Interplanetario (IFSI) ; Consiglio Nazionale delle Ricerche (CNR) ; Astronomy Unit [London] (AU) ; Queen Mary University of London (QMUL) ; Department of Physics and Astronomy [Iowa City] ; University of Iowa [Iowa City] ; Max Planck Institute for Solar System Research (MPS) ; Max-Planck-Gesellschaft ; Proxemy Research Inc ; Fakultaet fuer Elektrotechnik und Informationstechnik ; Technische Universität Dresden = Dresden University of Technology (TU Dresden) ; Center for Earth and Planetary Studies [Washington] (CEPS) ; Smithsonian National Air and Space Museum ; Smithsonian Institution-Smithsonian Institution ; Center for Remote Sensing of Ice Sheets (CReSIS) ; University of Kansas [Lawrence] (KU) ; Fakultät für Elektrotechnik und Informationstechnik ; Ruhr-Universität Bochum [Bochum] |
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| Quelle: | Science Science, American Association for the Advancement of Science, 2007, 316 (5821), pp.92-95. ⟨10.1126/science.1139672⟩ ResearcherID; (2007) |
| Veröffentlichung: | HAL CCSD, 2007 |
| Medientyp: | unknown |
| ISSN: | 0036-8075 (print) ; 1095-9203 (print) |
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