The Global Topography of Mars and Implications for Surface Evolution-Reference-Cited by-同舟云学术

The Global Topography of Mars and Implications for Surface Evolution

Published:1999-05-28 Issue:5419 Volume:284 Page:1495-1503
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Smith David E.¹,Zuber Maria T.¹²,Solomon Sean C.³,Phillips Roger J.⁴,Head James W.⁵,Garvin James B.¹,Banerdt W. Bruce⁶,Muhleman Duane O.⁷,Pettengill Gordon H.²,Neumann Gregory A.¹²,Lemoine Frank G.¹,Abshire James B.¹,Aharonson Oded²,David C.,Brown ⁴,Hauck Steven A.⁴,Ivanov Anton B.⁷,McGovern Patrick J.³,Zwally H. Jay¹,Duxbury Thomas C.⁶

Affiliation:

1. Earth Sciences Directorate, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA.

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

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

4. Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, USA.

5. Department of Geological Sciences, Brown University, Providence, RI 02912, USA.

6. Jet Propulsion Laboratory, Pasadena, CA 91109, USA.

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

Abstract

Elevations measured by the Mars Orbiter Laser Altimeter have yielded a high-accuracy global map of the topography of Mars. Dominant features include the low northern hemisphere, the Tharsis province, and the Hellas impact basin. The northern hemisphere depression is primarily a long-wavelength effect that has been shaped by an internal mechanism. The topography of Tharsis consists of two broad rises. Material excavated from Hellas contributes to the high elevation of the southern hemisphere and to the scarp along the hemispheric boundary. The present topography has three major drainage centers, with the northern lowlands being the largest. The two polar cap volumes yield an upper limit of the present surface water inventory of 3.2 to 4.7 million cubic kilometers.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference88 articles.

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3. The data set includes topographic profiles of the northern hemisphere collected during the capture orbit aerobraking hiatus orbit and Science Phasing Orbit phases of the Mars Global Surveyor mission during the period 15 September 1997 to 31 July 1998 and circum-Mars profiles spanning the latitude range 87°N to 87°S for the period 1 March to 15 April 1999.

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