The channels of the planet Mars

Details The channels of the planet Mars The channels of the planet Mars

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988lastr.102...98c&link_type=abstract

L'Astronomie (ISSN 0004-6302), vol. 102, March 1988, p. 98-104. In French.

Biology

Canals, Mars Environment, Mars Surface, Water Flow, Atmospheric Pressure, Deep Water, Exobiology, Permafrost, Water Runoff

Scientific paper

The origin of channels on Mars and the evidence that they provide for the previous existence of water on the planet are discussed. Outflow-type channels are only found in the transition region between the cratered plains and the large plains of chaotic terrain, while the runoff-type channels, resembling more those found on earth, are located throughout the cratered plateau. It is hypothesized that runoff channels, dating from as early as 3.7 billion years ago, could have been formed by the rain and surface flow made posible by a relatively high-pressure primordial atmosphere. Following the disappearance of this atmosphere, water transformed into subsurface ice could have resurfaced under catastrophic conditions such as volcanic activity to form the more recent (0.5-1 billion year old) outflow channels.

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