Lapotre, M. G. A. and Ewing, R. C. and Lamb, M. P. and Fischer, W. W. and Grotzinger, J. P. and Rubin, D. M. and Lewis, K. W. and Ballard, M. J. and Daybell, M. and Gupta, S. and Banham, S. G. and Bridges, N. T. and Des Marais, D. J. and Fraeman, A. A. and Grant, J. A. and Herkenhoff, K. E. and Ming, D. W. and Mischna, M. A. and Rice, M. S. and Sumner, D. A. and Vasavada, A. R. and Yingst, R. A. (2016) Large wind ripples on Mars: A record of atmospheric evolution. Science, 353 (6294). pp. 55-58. ISSN 0036-8075. doi:10.1126/science.aaf3206. https://resolver.caltech.edu/CaltechAUTHORS:20160705-124124642
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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.
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| Additional Information: | © 2016 American Association for the Advancement of Science. 25 January 2016; accepted 31 May 2016. We thank the MSL engineering and science teams; the Mastcam team; Malin Space Science Systems, who made the rover observations possible; and B. Ehlmann and K. Edgett for insightful comments. Data presented in this paper are archived in the Planetary Data System (pds.nasa.gov), and our compilation is available the supplementary materials (data tables S1 and S2). Part of this research was carried out at the Jet Propultion Laboutatory–Caltech, under a contract with NASA. Work in the United Kingdom was funded by the UK Space Agency. D.M.R. was funded by the NASA MSL Participating Scientist program, and A.A.F. by a KISS Prize Postdoctoral Fellowship and a Caltech GPS Division Texaco Prize Postdoctoral Fellowship. | ||||||||||||||||||||||||||||||||||
| Group: | Keck Institute for Space Studies, Division of Geological and Planetary Sciences | ||||||||||||||||||||||||||||||||||
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| Issue or Number: | 6294 | ||||||||||||||||||||||||||||||||||
| DOI: | 10.1126/science.aaf3206 | ||||||||||||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20160705-124124642 | ||||||||||||||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20160705-124124642 | ||||||||||||||||||||||||||||||||||
| Official Citation: | Large wind ripples on Mars: A record of atmospheric evolution By M. G. A. Lapotre, R. C. Ewing, M. P. Lamb, W. W. Fischer, J. P. Grotzinger, D. M. Rubin, K. W. Lewis, M. J. Ballard, M. Day, S. Gupta, S. G. Banham, N. T. Bridges, D. J. Des Marais, A. A. Fraeman, J. A. Grant, K. E. Herkenhoff, D. W. Ming, M. A. Mischna, M. S. Rice, D. A. Sumner, A. R. Vasavada, R. A. Yingst Science 01 Jul 2016: Vol. 353, Issue 6294, pp. 55-58 DOI: 10.1126/science.aaf3206 | ||||||||||||||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||||||||||||||
| ID Code: | 68829 | ||||||||||||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||||||||||||
| Deposited By: | Ruth Sustaita | ||||||||||||||||||||||||||||||||||
| Deposited On: | 05 Jul 2016 20:26 | ||||||||||||||||||||||||||||||||||
| Last Modified: | 11 Nov 2021 04:05 |
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