Physics – Geophysics
Scientific paper
Nov 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3121503f&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 21, CiteID L21503
Physics
Geophysics
17
Hydrology: Erosion And Sedimentation, Marine Geology And Geophysics: Littoral Processes, Mathematical Geophysics: Modeling, Oceanography: General: Estuarine Processes, Oceanography: Physical: Surface Waves And Tides (1255)
Scientific paper
Salt marshes are often dissected by a network of channels formed by tidal oscillations and related water fluxes. In this note we present a stochastic model able to simulate the formation and evolution of tidal networks in salt marshes. The model is based on a simplification of the shallow water equations that enables the determination of the water surface gradients on the marsh platform and related bottom shear stresses. The governing equations are then solved with a random walk algorithm in an enclosed domain representing the marsh platform and its physical boundaries. Model results show how the development of the network depends on the tidal forcing, the critical shear stress for erosion, as well as the local heterogeneities in vegetation and sediment substrate.
Fagherazzi Sergio
Sun Tao
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