HR: 12:05h
AN: OS42B-04    [Abstracts]
TI: Numerical modeling of shoaling of internal solitons with respect to maximum velocities.
AU: * Thiem, {
EM: Oyvind.Thiem@bccs.uib.no
AF: Bergen Center for Computational Science, Unifob AS, Thormøhlens gt. 55, Bergen, 5008, Norway
AU: Berntsen, J
EM: Jarle.Berntsen@math.uib.no
AF: Department of Mathematics, University of Bergen, Johannes Brunsgate 12, Bergen, 5008, Norway
AB: Internal waves and solitons are found in all oceans. Solitons and internal waves that have amplitudes over 100 m and wave lengths of 20 km are measured. Measurements prior to the development of a gas field located in the shelf slope outside mid Norway (Europe) showed sudden strong near seabed velocities. The high velocities were often connected to drop in temperature similar to shoaling of solitons. The temperature drops indicated pycnocline movements maybe as large as 100 m which might be connected to internal waves or solitons. 2D non-hydrostatic numerical simulations of internal solitons which shoal along a linear continental shelf slope were performed. The sensitivity of the results to the steepness of the slope and amplitude of the soliton is investigated. The main focus is on the maximum velocity generated during the breaking of the solitons but also the effect of the grid resolution is discussed.
DE: 4455 Nonlinear waves, shock waves, solitons (0689, 2487, 3280, 3285, 4275, 6934, 7851, 7852)
DE: 4532 General circulation (1218, 1222)
DE: 4544 Internal and inertial waves
DE: 4562 Topographic/bathymetric interactions
DE: 4568 Turbulence, diffusion, and mixing processes (4490)
SC: Ocean Sciences [OS]
MN: 2007 Fall Meeting