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The Global Topography of Mars and Implications for Surface Evolution

Smith, David E. and Zuber, Maria T. and Solomon, Sean C. and Phillips, Roger J. and Head, James W. and Garvin, James B. and Banerdt, W. Bruce and Muhleman, Duane O. and Pettengill, Gordon H. and Neumann, Gregory A. and Lemoine, Frank G. and Abshire, James B. and Aharonson, Oded and Brown, C. David and Hauck, Steven A. and Ivanov, Anton B. and McGovern, Patrick J. and Zwally, H. Jay and Duxbury, Thomas C. (1999) The Global Topography of Mars and Implications for Surface Evolution. Science, 284 (5419). pp. 1495-1503. ISSN 0036-8075. doi:10.1126/science.284.5419.1495. https://resolver.caltech.edu/CaltechAUTHORS:20141125-075410579

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1126/science.284.5419.1495DOIArticle
http://www.sciencemag.org/content/284/5419/1495PublisherArticle
http://www.sciencemag.org/content/284/5422/1929.4PublisherCorrection
ORCID:
AuthorORCID
Head, James W.0000-0003-2013-560X
Aharonson, Oded0000-0001-9930-2495
Additional Information:© 1999 American Association for the Advancement of Science. Received 21 April 1999; accepted 10 May 1999. We acknowledge the MOLA instrument team and the MGS spacecraft and operation teams at the Jet Propulsion Laboratory and Lockheed-Martin Astronautics for providing the engineering foundation that enabled this analysis. We also thank G. Elman, P. Jester, and J. Schott for assistance in altimetry processing, D. Rowlands and S. Fricke for help with orbit determination, S. Zhong for assistance with the Hellas relaxation calculation, and G. McGill for a constructive review. The MOLA investigation is supported by the NASA Mars Global Surveyor Project.
Errata:In note 14 (p. 1502) of the Research Article “The global topography of Mars and Implications for surface evolution” by D. E. Smith et al. (28 May, p. 1495), the last line should have read, “3,396,000 m.”
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NASAUNSPECIFIED
Issue or Number:5419
DOI:10.1126/science.284.5419.1495
Record Number:CaltechAUTHORS:20141125-075410579
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20141125-075410579
Official Citation:The Global Topography of Mars and Implications for Surface Evolution David E. Smith, Maria T. Zuber, Sean C. Solomon, Roger J. Phillips, James W. Head, James B. Garvin, W. Bruce Banerdt, Duane O. Muhleman, Gordon H. Pettengill, Gregory A. Neumann, Frank G. Lemoine, James B. Abshire, Oded Aharonson, C. David, Brown, Steven A. Hauck, Anton B. Ivanov, Patrick J. McGovern, H. Jay Zwally, and Thomas C. Duxbury Science 28 May 1999: 284 (5419), 1495-1503. [DOI:10.1126/science.284.5419.1495]
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:52119
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:25 Nov 2014 20:48
Last Modified:10 Nov 2021 19:21

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