I would like to express my sincere thanks to my advisor and supervisory committee chairman, Dr. Ashish J. Mehta, for his continuing guidance and support throughout my study at the University of Florida. My thanks are also extended to Dr. Robert J. Thieke, Dr. Clay L. Montague, and to Dr. Earl J. Hayter, Clemson University, who has been advising me for six and a half years now. I am most indebted to the staff of the Coastal Engineering Laboratory, especially Jim Joiner and Sidney Schofield, for their cooperation and assistance on this project. Many thanks to Lillean Pieter for drafting all the figures herein. A very big thanks to Cynthia Vey who acted as a living WP51 user manual. Thanks also to Dr. Parchure, Noshir, Apurva, and Tony who all...