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          Institute: MPI für Chemie     Collection: Publikationen MPI für Chemie     Display Documents

ID: 13588.0, MPI für Chemie / Publikationen MPI für Chemie
Distribution of hydrogen in the near surface of Mars: Evidence for subsurface ice deposits
Authors:Boynton, W. V.; Feldman, W. C.; Squyres, S. W.; Prettyman, T. H.; Brückner, J.; Evans, L. G.; Reedy, R. C.; Starr, R.; Arnold, J. R.; Drake, D. M.; Englert, P. A. J.; Metzger, A. E.; Mitrofanov, I.; Trombka, J. I.; d'Uston, C.; Wänke, H.; Gasnault, O.; Hamara, D. K.; Janes, D. M.; Marcialis, R. L.; Maurice, S.; Mikheeva, I.; Taylor, G. J.; Tokar, R.; Shinohara, C.
Date of Publication (YYYY-MM-DD):2002-07-01
Title of Journal:Science
Journal Abbrev.:Science
Issue / Number:5578
Start Page:81
End Page:85
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Using the Gamma-Ray Spectrometer on the Mars Odyssey, we have identified two regions near the poles that are enriched in hydrogen. The data indicate the presence of a subsurface layer enriched in hydrogen overlain by a hydrogen-poor layer. The thickness of the upper layer decreases with decreasing distance to the pole, ranging from a column density of about 150 grams per square centimeter at -42degrees latitude to about 40 grams per square centimeter at -77degrees. The hydrogen-rich regions correlate with regions of predicted ice stability. We suggest that the host of the hydrogen in the subsurface layer is ice, which constitutes 35 +/- 15% of the layer by weight.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Chemie/Kosmochemie
External Affiliations:Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA; Los Alamos Natl Lab, Los Alamos, NM 87545 USA; Cornell Univ, Ctr Radiophys & Space Res, Ithaca, NY 14853 USA; Comp Sci Corp, Sci Programs, Lanham, MD 20706 USA; Univ New Mexico, Inst Meteorit, Albuquerque, NM 87131 USA; Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA; Univ Calif San Diego, Dept Chem, La Jolla, CA 92093 USA; TechSource, Santa Fe, NM 87505 USA; Victoria Univ Wellington, Wellington, New Zealand; CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA; Russian Acad Sci, Inst Space Res, Moscow, Russia; NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA; Ctr Etud Spatiale Rayonnements, Toulouse, France; Observ Midi Pyrenees, F-31400 Toulouse, France; Univ Hawaii, Honolulu, HI 96822 USA
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