Okada solution

Computation of co-seismic displacements due to a rectangular dislocation in an elastic half-space.

Computation of static co-seismic displacements due to a dislocation-type deformation in a half-space

Description: This exact solution is often used to construct co-seismic displacements due to an underwater earthquake. These displacements are then used to construct in some way an initial condition for tsunami propagation codes.

For more details, please, refer to the original Okada paper:
* Okada, Y. (1985). Surface deformation due to shear and tensile faults in a half-space. Bull. Seism. Soc. Am., 75, 1135-1154.

Or to my freely available preprint:
* D. Dutykh, F. Dias, Water waves generated by a moving bottom. In Book:"Tsunami and Nonlinear Waves", Kundu, A. (Editor), Springer Verlag 2007
http://hal.archives-ouvertes.fr/hal-00115875/

More sophisticated approaches to the tsunami generation problem can be found in other publications of the author:
http://www.denys-dutykh.com/