Meridiani Planum and the global hydrology of Mars

Jeffrey C. Andrews-Hanna (), Roger J. Phillips and Maria T. Zuber
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Jeffrey C. Andrews-Hanna: Washington University, St Louis, Missouri 63130, USA
Roger J. Phillips: Washington University, St Louis, Missouri 63130, USA
Maria T. Zuber: Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA

Nature, 2007, vol. 446, issue 7132, 163-166

Abstract: Martian water goes global The evaporite deposits in the Meridiani Planum region on Mars, investigated by the Opportunity rover vehicle, have been interpreted as evidence for the presence of a fluctuating water table. But there is a problem: there is no topographic basin in this region to account for the presence of evaporates in the first place. A new hydrological modelling study circumvents this difficulty by presenting a mechanism by which evaporites could have formed at Meridiani without the need for water to collect in an enclosed basin, as a result of sustained global groundwater upwelling and evaporation.

Date: 2007
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DOI: 10.1038/nature05594

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