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Dust observations at orbital altitudes surrounding Mars
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- Andersson, L. (author)
- Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80303 USA.
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- Weber, T. D. (author)
- Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80303 USA.
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- Malaspina, D. (author)
- Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80303 USA.
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- Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80303 USA Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. (creator_code:org_t)
- American Association for the Advancement of Science (AAAS), 2015
- 2015
- English.
- In: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 350:6261
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Dust is common close to the martian surface, but no known process can lift appreciable concentrations of particles to altitudes above similar to 150 kilometers. We present observations of dust at altitudes ranging from 150 to above 1000 kilometers by the Langmuir Probe and Wave instrument on the Mars Atmosphere and Volatile Evolution spacecraft. Based on its distribution, we interpret this dust to be interplanetary in origin. A comparison with laboratory measurements indicates that the dust grain size ranges from 1 to 12 micrometers, assuming a typical grain velocity of similar to 18 kilometers per second. These direct observations of dust entering the martian atmosphere improve our understanding of the sources, sinks, and transport of interplanetary dust throughout the inner solar system and the associated impacts on Mars's atmosphere.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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- Andersson, L.
- Weber, T. D.
- Malaspina, D.
- Crary, F.
- Ergun, R. E.
- Delory, G. T.
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- Fowler, C. M.
- Morooka, M. W.
- McEnulty, T.
- Eriksson, Anders ...
- Andrews, David. ...
- Horanyi, M.
- Collette, A.
- Yelle, R.
- Jakosky, B. M.
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- Uppsala University
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