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Depth-dependent diffusion algorithm for simulation of sedimentation in shallow marine depositional systems

Kaufman, P. and Grotzinger, J. P. and McCormick, D. S. (1991) Depth-dependent diffusion algorithm for simulation of sedimentation in shallow marine depositional systems. Bulletin - Kansas Geological Survey, 233 . pp. 489-508. ISSN 0097-4471.

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An algorithm has been developed to simulate sediment dispersal on shallow marine siliciclastic, carbonate, and mixed siliciclastic-carbonate shelves. The algorithm is based on a diffusion scheme in which the diffusion coefficient decays exponentially with water depth. The rationale for using a varying diffusion coefficient lies in the observation that on marine shelves wave energy and therefore bed shear stress decay exponentially with water depth. Thus sediment flux cannot be modeled by a diffusive process based on a linear dependence on slope alone. This approach is probably most appropriate for wave-dominated shelves. The model simulates deposition in two dimensions. Siliciclastic shelf sedimentation occurs solely by lateral transport in the plane of section by diffusion; carbonate sedimentation occurs by depth-dependent in situ sediment production with subsequent lateral dispersal of sediment by diffusion. The effects of early cementation can be modeled by varying the transport coefficient that governs the efficiency of diffusion.

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Grotzinger, J. P.0000-0001-9324-1257
Additional Information:© 1991 Kansas Geological Survey. We thank P. Flemings, B. Coakley, R. Slingerland, and J. Southard for criticisms, free exchange of ideas, and preprints. This research was supported by the Chevron Oil Field Research Company and the National Science Foundation under grant EAR 89-16870. We also thank J. French, C. Paola, W. Ross, J. Thome, and D. Watts for constructive reviews of the manuscript.
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Chevron Oil Field Research CompanyUNSPECIFIED
NSFEAR 89-16870
Record Number:CaltechAUTHORS:20141009-145508659
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50318
Deposited By: Tony Diaz
Deposited On:09 Oct 2014 22:50
Last Modified:03 Oct 2019 07:22

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