Physics
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.9129d&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. E5, p. 9129-9138.
Physics
8
Canyons, Channel Flow, Drainage, Mars Surface, Plains, Surface Water, Valleys, Water Flow, Flow Velocity, Ponds, Mars, Maja Valles, Discharge, Valleys, Flow, Water, Surface, Flooding, Lunae Planum, Xanthe Terra, Chryse Planitia, Lifetime, Volume, Erosion, Timescale, Sedimentation, Channels, Deposition
Scientific paper
The 1600 km-long Maja Valles outflow system of Mars consists of three major divisions including the upper valley on Lunae Planum, the canyon section across Xanthe Terra, and the lower valley across western Chryse Planitia. Although water released from the source in Juventae Chasma could reach the terminus of the present day valley system in central Chryse Planitia within 44 hours, the original outflow did not traverse the Martian surface in a direct path. It ponded along its course on northern Lunae Planum and near the western edge of Chryse Planitia significantly prolonging the lifetime of surface flow. Calculation of pond volumes and discharge rates through various parts of the channel system indicates that water flowed through this system for nearly a (terrestrial) year. Discharge rates from the various basins along the Maja channels and the maximum flow rates within the various channels are calculated. With this data, it is possible to place reasonable estimates of the minimum length of time required to drain the various impoundments and the duration of flow in various parts of the channel system. The results of these calculations are discussed.
de Hon R. A.
Pani E. A.
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