CO 2 Snow Depth and Subsurface Water-Ice Abundance in the Northern Hemisphere of Mars-Reference-Cited by-同舟云学术

CO 2 Snow Depth and Subsurface Water-Ice Abundance in the Northern Hemisphere of Mars

Published:2003-06-27 Issue:5628 Volume:300 Page:2081-2084
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Mitrofanov I. G.¹²³⁴⁵,Zuber M. T.¹²³⁴⁵,Litvak M. L.¹²³⁴⁵,Boynton W. V.¹²³⁴⁵,Smith D. E.¹²³⁴⁵,Drake D.¹²³⁴⁵,Hamara D.¹²³⁴⁵,Kozyrev A. S.¹²³⁴⁵,Sanin A. B.¹²³⁴⁵,Shinohara C.¹²³⁴⁵,Saunders R. S.¹²³⁴⁵,Tretyakov V.¹²³⁴⁵

Affiliation:

1. Space Research Institute, Russian Academy of Sciences, Moscow, 117997, Russia.

2. Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139–4307, USA.

3. Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA.

4. Laboratory for Terrestrial Physics, NASA–Goddard Space Flight Center, Greenbelt, MD 20771, USA.

5. Tech-Source, Santa Fe, NM 87505, USA.

Abstract

Observations of seasonal variations of neutron flux from the high-energy neutron detector (HEND) on Mars Odyssey combined with direct measurements of the thickness of condensed carbon dioxide by the Mars Orbiter Laser Altimeter (MOLA) on Mars Global Surveyor show a latitudinal dependence of northern winter deposition of carbon dioxide. The observations are also consistent with a shallow substrate consisting of a layer with water ice overlain by a layer of drier soil. The lower ice-rich layer contains between 50 and 75 weight % water, indicating that the shallow subsurface at northern polar latitudes on Mars is even more water rich than that in the south.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference41 articles.

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2. P. B. James, H. H. Kieffer, D. A. Paige, in Mars, H. H. Kieffer, B. M. Jakosky, C. W. Snyder, M. S. Matthews, Eds. (Univ. of Ariz. Press, Tucson, 1992), pp. 934–968.

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