Models of climate cycles recorded in Martian polar layered deposits

Details Models of climate cycles recorded in Martian polar layered deposits Models of climate cycles recorded in Martian polar layered deposits

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982icar...50..216c&link_type=abstract

(Workshop on Quasi-Periodic Climatic Changes on Earth and Mars, Moffett Field, CA, Feb. 24-26, 1981.) Icarus, vol. 50, May-June

Other

58

Climatology, Mars Photographs, Mars Surface, Mineral Deposits, Periodic Variations, Polar Regions, Stratigraphy, Dust Storms, Eccentric Orbits, Photointerpretation, Viking Orbiter Spacecraft

Scientific paper

Mars polar deposit accumulation models are used to predict the sequences of layer thicknesses. Continuous deposition and climate-modulated deposition models are compared, and two physical models of the latter type are developed in detail. In addition to examining the sensitivity of the sequence of layer thicknesses to model type and threshold, parallels with terrestrial ocean margin deposition are drawn with a view to better understanding the effects of a prolonged interval of nondeposition on stratigraphy and the modification of the central polar stratigraphy by scarp margin effects. When the threshold for deposition lies in the midrange with respect to excursions of the climate function, deposition occurs about half of the time, and there is only a slight modulation of the layer thickness. When the threshold for deposition is high, deposition occurs only a small fraction of the total time, and groups of layers form which are separated from other groups by long periods of nondeposition.

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