The Crust of the Moon as Seen by GRAIL-Reference-Cited by-同舟云学术

The Crust of the Moon as Seen by GRAIL

Published:2013-02-08 Issue:6120 Volume:339 Page:671-675
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Wieczorek Mark A.¹,Neumann Gregory A.²,Nimmo Francis³,Kiefer Walter S.⁴,Taylor G. Jeffrey⁵,Melosh H. Jay⁶,Phillips Roger J.⁷,Solomon Sean C.⁸⁹,Andrews-Hanna Jeffrey C.¹⁰,Asmar Sami W.¹¹,Konopliv Alexander S.¹¹,Lemoine Frank G.²,Smith David E.¹²,Watkins Michael M.¹¹,Williams James G.¹¹,Zuber Maria T.¹²

Affiliation:

1. Institut de Physique du Globe de Paris, Sorbonne Paris Cité, Université Paris Diderot, Case 7071, Lamarck A, 5, rue Thomas Mann, 75205 Paris Cedex 13, France.

2. Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.

3. Department of Earth and Planetary Sciences, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA.

4. Lunar and Planetary Institute, Houston, TX 77058, USA.

5. Hawaii Institute of Geophysics and Planetology, University of Hawaii, Honolulu, HI 96822, USA.

6. Department of Earth and Atmospheric Sciences, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907, USA.

7. Planetary Science Directorate, Southwest Research Institute, Boulder, CO 80302, USA.

8. Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC 20015, USA.

9. Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, USA.

10. Department of Geophysics, Colorado School of Mines, 1500 Illinois Street, Golden, CO 80401–1887, USA.

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

12. Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139–4307, USA.

Abstract

The Holy GRAIL? The gravity field of a planet provides a view of its interior and thermal history by revealing areas of different density. GRAIL, a pair of satellites that act as a highly sensitive gravimeter, began mapping the Moon's gravity in early 2012. Three papers highlight some of the results from the primary mission. Zuber et al. (p. 668 , published online 6 December) discuss the overall gravity field, which reveals several new tectonic and geologic features of the Moon. Impacts have worked to homogenize the density structure of the Moon's upper crust while fracturing it extensively. Wieczorek et al. (p. 671 , published online 6 December) show that the upper crust is 35 to 40 kilometers thick and less dense—and thus more porous—than previously thought. Finally, Andrews-Hanna et al. (p. 675 , published online 6 December) show that the crust is cut by widespread magmatic dikes that may reflect a period of expansion early in the Moon's history.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference72 articles.

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