1. Formerly, Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Univ. of Washington, Seattle, WA 98195 (corresponding author).
2. Engineer, COWI Marine North America, 1191 2nd Ave., Suite 1110, Seattle, WA 98101.
3. 1st Lieutenant, United States Air Force, Washington, DC 20001.
4. Professor, Dept. of Civil and Environmental Engineering, Univ. of Washington, Seattle, WA 98195.