Imperial College London
Professor Sanjeev Gupta

ProfessorSanjeevGupta

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Earth Science
 
 
 
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Contact

 

+44 (0)20 7594 6527s.gupta

 
 
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Location

 

Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Lapotre:2016:10.1126/science.aaf3206,
author = {Lapotre, MG and Ewing, RC and Lamb, MP and Fischer, WW and Grotzinger, JP and Rubin, DM and Lewis, KW and Ballard, MJ and Day, M and Gupta, S and Banham, SG and Bridges, NT and Des, Marais DJ and Fraeman, AA and Grant, JA and Herkenhoff, KE and Ming, DW and Mischna, MA and Rice, MS and Sumner, DA and Vasavada, AR and Yingst, RA},
doi = {10.1126/science.aaf3206},
journal = {Science},
pages = {55--58},
title = {Large wind ripples on Mars: a record of atmospheric evolution},
url = {http://dx.doi.org/10.1126/science.aaf3206},
volume = {353},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - 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.
AU  - Lapotre,MG
AU  - Ewing,RC
AU  - Lamb,MP
AU  - Fischer,WW
AU  - Grotzinger,JP
AU  - Rubin,DM
AU  - Lewis,KW
AU  - Ballard,MJ
AU  - Day,M
AU  - Gupta,S
AU  - Banham,SG
AU  - Bridges,NT
AU  - Des,Marais DJ
AU  - Fraeman,AA
AU  - Grant,JA
AU  - Herkenhoff,KE
AU  - Ming,DW
AU  - Mischna,MA
AU  - Rice,MS
AU  - Sumner,DA
AU  - Vasavada,AR
AU  - Yingst,RA
DO  - 10.1126/science.aaf3206
EP  - 58
PY  - 2016///
SN  - 1095-9203
SP  - 55
TI  - Large wind ripples on Mars: a record of atmospheric evolution
T2  - Science
UR  - http://dx.doi.org/10.1126/science.aaf3206
UR  - http://hdl.handle.net/10044/1/34409
VL  - 353
ER  -
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