An Investigation of Linear Transients Associated with a Time Dependent Bottom Spiral.
NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
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Ekmans linear equations for time dependent flow neglecting wind stress are solved using a time dependent Greens function and the method suggested by Welander 1957. The solution represents the vertical velocity profile in terms of the local time history of the changes in sea surface elevation determined by the divergence of the flow in the vertically integrated coninuity equation. A fully implicit finite-difference scheme is developed to represent a time dependent seiche oscillating across a shallow infinite channel. The transients associated with the formation of the bottom spiral are clearly represented by the model and the influence of friction and Coriolis are individually and collectively introduced. The model allows independent calcuation of velocity, volume transport, sea surface elevation, bottom stress, andthe total energy balance of the system. Author
- Physical and Dynamic Oceanography