A mechanism for sediment resuspension by internal solitary waves

Details A mechanism for sediment resuspension by internal solitary waves A mechanism for sediment resuspension by internal solitary waves

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.1317b&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 9, p. 1317-1320

Physics

Plasma Physics

15

Oceanography: Physical: Internal And Inertial Waves, Oceanography: General: Benthic Boundary Layers, Global Change: Impact Phenomena, Space Plasma Physics: Waves And Instabilities

Scientific paper

A mechanism whereby internal solitary waves can lead to enhanced resuspension in coastal regions is presented. The mechanism involves the creation of a local region of separated flow in the boundary layer under the footprint of a wave. This region is susceptible to a global instability which leads to a coherent dynamics in which gradients in the normal and tangential stresses acting on the bottom surface are increased tenfold. Such increased bottom stresses and the spatio-temporal character of the flow combine to produce conditions favorable for resuspension.

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