The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars-Reference-Cited by-同舟云学术

The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars

Published:2015-01-23 Issue:6220 Volume:347 Page:412-414
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Mahaffy P. R.¹,Webster C. R.²,Stern J. C.¹,Brunner A. E.¹³⁴,Atreya S. K.⁵,Conrad P. G.¹,Domagal-Goldman S.¹,Eigenbrode J. L.¹,Flesch G. J.²,Christensen L. E.²,Franz H. B.¹⁴,Freissinet C.¹⁶,Glavin D. P.¹,Grotzinger J. P.⁷,Jones J. H.⁸,Leshin L. A.⁹,Malespin C.¹¹⁰,McAdam A. C.¹,Ming D. W.⁸,Navarro-Gonzalez R.¹¹,Niles P. B.⁸,Owen T.¹²,Pavlov A. A.¹,Steele A.¹³,Trainer M. G.¹,Williford K. H.²,Wray J. J.¹⁴,

Affiliation:

1. Planetary Environments Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.

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

3. School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85281, USA.

4. Center for Research and Exploration in Space Science and Technology, University of Maryland College Park, College Park, MD 20742, USA.

5. Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109-2143, USA.

6. NASA Postdoctoral Program, Oak Ridge Associated Universities, Oak Ridge, TN 37831, USA.

7. Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.

8. NASA Johnson Space Flight Center, Houston, TX 77058, USA.

9. Office of the President, Worcester Polytechnic Institute, Worcester, MA 01609, USA.

10. Goddard Earth Sciences Technology and Research (GESTAR)/Universities Space Research Association (USRA) NASA Goddard Space Flight Center Greenbelt, MD 20771, USA.

11. Universidad Nacional Autónoma de México, Ciudad Universitaria, México D.F. 04510, Mexico.

12. Institute for Astronomy, University of Hawaii, Honolulu, HI 96822, USA.

13. Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA.

14. School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA.

Abstract

Of water and methane on Mars The Curiosity rover has been collecting data for the past 2 years, since its delivery to Mars (see the Perspective by Zahnle). Many studies now suggest that many millions of years ago, Mars was warmer and wetter than it is today. But those conditions required an atmosphere that seems to have vanished. Using the Curiosity rover, Mahaffy et al. measured the ratio of deuterium to hydrogen in clays that were formed 3.0 to 3.7 billion years ago. Hydrogen escapes more readily than deuterium, so this ratio offers a snapshot measure of the ancient atmosphere that can help constrain when and how it disappeared. Most methane on Earth has a biological origin, so planetary scientists have keenly pursued its detection in the martian atmosphere as well. Now, Webster et al. have precisely confirmed the presence of methane in the martian atmosphere with the instruments aboard the Curiosity rover at Gale crater. Science , this issue p. 412 , p. 415 ; see also p. 370

Funder

NASA’s Mars Exploration Program

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference48 articles.

1. A Habitable Fluvio-Lacustrine Environment at Yellowknife Bay, Gale Crater, Mars

2. Atmospheres on the terrestrial planets: Clues to origin and evolution

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4. Mars Atmospheric Loss and Isotopic Fractionation by Solar-Wind-Induced Sputtering and Photochemical Escape

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