Meeting:Abstract 2011 CSDMS meeting-049

From CSDMS
Revision as of 15:11, 10 June 2017 by WikiSysop (talk | contribs) (Text replacement - "USA" to "United States")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)


Browse  abstracts

CSDMS all hands meeting 2011

A new channel-resolving reduced-romplexity model for sedimentary delta formation

Man Liang, SAFL, University of Minnesota Minneapolis Minnesota, . liang095@umn.edu
Vaughan Voller, SAFL, University of Minnesota Minneapolis Minnesota, United States. volle001@umn.edu
Chris Paola, SAFL, University of Minnesota Minneapolis Minnesota, United States. cpaola@umn.edu


[[Image:|300px|right|link=File:]]Sedimentary delta formation varies over a wide range of time and space scales. Reduced-complexity models offer a worthwhile means of retaining key dynamics and phenomena in delta morphodynamics through employing approximate but physically reliable descriptions of governing transport equations. To that end, we developed a cellular rule-based model, using a “directed” random-walk to determine the flow field, coupled with empirically based sediment transport schemes, following an Exner equation combining bedload and suspended load. Preliminary results provide physically reasonable 3-dimensional topographical features, as well as dynamic processes like channel avulsions and bifurcations. Stratigraphy is also recorded. The flexibility of the modeling framework makes each building block to be updated separately, which will allow for the ready extension to include additional phenomena such as waves and tides.