Evidence for the abundance of water on Mars now and in the past

Details Evidence for the abundance of water on Mars now and in the past Evidence for the abundance of water on Mars now and in the past

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989e%26s.....1....3c&link_type=abstract

Earth in Space (ISSN 1040-3124), vol. 1, Feb. 1989, p. 3-5.

Astronomy and Astrophysics

Astrophysics

Mars, Water, Abundance, Photographs, Climate, History, Channels, Topography, Flooding, Morphology, Flow, Craters, Ejecta, Volcanism, Outgassing, Deposits, Sedimentation, Regolith, Porosity

Scientific paper

This paper discusses evidence for the abundance of water on Mars early in its history, based on the analysis of the Viking 1 and 2 images and the Martian-atmosphere water measurements. It is argued that integrated networks of small valleys in the ancient cratered terrain of Mars may indicate that the planet once possessed a warmer climate. It is pointed out that most Martian outflow channels originate from the regions of collapsed and disrupted terrain, suggesting that they were formed by a catastrophic release of groundwater. The question of the fate of Martian water is discussed, and arguments are presented suggesting that the Martian crust may retain significant porosity to a depth of 10 km and may possess a total pore volume sufficient to store a global layer of water 0.5-1.5 km deep.

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