Dust observations at orbital altitudes surrounding Mars

L. Andersson, T. D. Weber, D. Malaspina, F. Crary, R. E. Ergun, G. T. Delory, C. M. Fowler, M. W. Morooka, T. McEnulty, A. I. Eriksson, D. J. Andrews, M. Horanyi, A. Collette, Roger Yelle, B. M. Jakosky

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Dust is common close to the martian surface, but no known process can lift appreciable concentrations of particles to altitudes above ~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 ~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.

Original languageEnglish (US)
Article numberA5
JournalScience
Volume350
Issue number6261
DOIs
StatePublished - Nov 6 2015

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Mars
dust
interplanetary dust
Martian atmosphere
atmosphere
solar system
spacecraft
grain size
probe

ASJC Scopus subject areas

  • General

Cite this

Andersson, L., Weber, T. D., Malaspina, D., Crary, F., Ergun, R. E., Delory, G. T., ... Jakosky, B. M. (2015). Dust observations at orbital altitudes surrounding Mars. Science, 350(6261), [A5]. https://doi.org/10.1126/science.aad0398

Dust observations at orbital altitudes surrounding Mars. / Andersson, L.; Weber, T. D.; Malaspina, D.; Crary, F.; Ergun, R. E.; Delory, G. T.; Fowler, C. M.; Morooka, M. W.; McEnulty, T.; Eriksson, A. I.; Andrews, D. J.; Horanyi, M.; Collette, A.; Yelle, Roger; Jakosky, B. M.

In: Science, Vol. 350, No. 6261, A5, 06.11.2015.

Research output: Contribution to journalArticle

Andersson, L, Weber, TD, Malaspina, D, Crary, F, Ergun, RE, Delory, GT, Fowler, CM, Morooka, MW, McEnulty, T, Eriksson, AI, Andrews, DJ, Horanyi, M, Collette, A, Yelle, R & Jakosky, BM 2015, 'Dust observations at orbital altitudes surrounding Mars', Science, vol. 350, no. 6261, A5. https://doi.org/10.1126/science.aad0398
Andersson L, Weber TD, Malaspina D, Crary F, Ergun RE, Delory GT et al. Dust observations at orbital altitudes surrounding Mars. Science. 2015 Nov 6;350(6261). A5. https://doi.org/10.1126/science.aad0398
Andersson, L. ; Weber, T. D. ; Malaspina, D. ; Crary, F. ; Ergun, R. E. ; Delory, G. T. ; Fowler, C. M. ; Morooka, M. W. ; McEnulty, T. ; Eriksson, A. I. ; Andrews, D. J. ; Horanyi, M. ; Collette, A. ; Yelle, Roger ; Jakosky, B. M. / Dust observations at orbital altitudes surrounding Mars. In: Science. 2015 ; Vol. 350, No. 6261.
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