Large wind ripples on Mars: A record of atmospheric evolution-Reference-Cited by-同舟云学术

Large wind ripples on Mars: A record of atmospheric evolution

Published:2016-07 Issue:6294 Volume:353 Page:55-58
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Lapotre M. G. A.¹,Ewing R. C.²,Lamb M. P.¹,Fischer W. W.¹,Grotzinger J. P.¹,Rubin D. M.³,Lewis K. W.⁴,Ballard M. J.²,Day M.⁵,Gupta S.⁶,Banham S. G.⁶,Bridges N. T.⁷,Des Marais D. J.⁸,Fraeman A. A.¹⁹,Grant J. A.¹⁰,Herkenhoff K. E.¹¹,Ming D. W.¹²,Mischna M. A.⁹,Rice M. S.¹³,Sumner D. Y.¹⁴,Vasavada A. R.⁹,Yingst R. A.¹⁵

Affiliation:

1. Division of Geological and Planetary Science, California Institute of Technology, Pasadena, CA 91125, USA.

2. Department of Geology and Geophysics, Texas A&M University, College Station, TX 77843, USA.

3. Department of Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, CA 95064, USA.

4. Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD 21218, USA.

5. Jackson School of Geosciences, University of Texas at Austin, Austin, TX 78712, USA.

6. Department of Earth Science and Engineering, Imperial College London, London SW7 2AZ, UK.

7. Applied Physics Laboratory, Johns Hopkins University, Laurel, MD 20723, USA.

8. NASA Ames Research Center, Moffett Field, CA 94035, USA.

9. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.

10. National Air and Space Museum, Smithsonian Institution, Washington, DC 20560, USA.

11. Astrogeology Science Center, U.S. Geological Survey, Flagstaff, AZ 86001-1698, USA.

12. NASA Johnson Space Center, Houston, TX 77058, USA.

13. Geology Department, Western Washington University, Bellingham, WA 98225-9080, USA.

14. Department of Earth and Planetary Sciences, University of California, Davis, CA 95616, USA.

15. Planetary Science Institute, Tucson, AZ 85719, USA.

Abstract

Wind blowing over sand on Earth produces decimeter-wavelength ripples and hundred-meter– to kilometer-wavelength dunes: bedforms of two distinct size modes. Observations from the Mars Science Laboratory Curiosity rover and the Mars Reconnaissance Orbiter reveal that Mars hosts a third stable wind-driven bedform, with meter-scale wavelengths. These bedforms are spatially uniform in size and typically have asymmetric profiles with angle-of-repose lee slopes and sinuous crest lines, making them unlike terrestrial wind ripples. Rather, these structures resemble fluid-drag ripples, which on Earth include water-worked current ripples, but on Mars instead form by wind because of the higher kinematic viscosity of the low-density atmosphere. A reevaluation of the wind-deposited strata in the Burns formation (about 3.7 billion years old or younger) identifies potential wind-drag ripple stratification formed under a thin atmosphere.

Funder

UK Space Agency

NASA MSL Participating Scientist

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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