Calculates the Shelf Response to an incident Gaussian pulse. Based on the article of Chapman, D. C. and G. S. Giese, 1990. J. Phys. Oceanogr. 20 1459-1467 pp.: "The incident internal
pulse at the interface generates a surface pulse at the shelf break with amplitude Q0/2 which travels across the shelf toward the coast. It's amplitude doubles to Q0 at the coast where it reflects from the coastal wall and travels back across the shelf toward the shelf break. Upon reaching the shelf break, part of the pulse is reflected shoreward while part continues into the deep ocean leaking energy to deep-ocean surface and internal waves."