1. Professor, Ocean Engineering Program, Civil Engineering Dept., Oregon State Univ., Corvallis, OR 97331 (corresponding author). E-mail: solomon.yim@oregonstate.edu
2. Engineer, Energo Engineering, Inc., 3100 Wilcrest Dr., Suite 240, Houston, TX 77042.
3. Post Doctoral Student, DISAT Dept., L’Aquila Univ., 67040 Monteluco di Roio, L’Aquila, Italy.
4. Post Doctoral Student, DISAT-LIAM Dept., L’Aquila Univ., 67040 Monteluco di Roio, L’Aquila, Italy.
5. Professor, School of Civil and Environmental Engineering, Cornell Univ., Ithaca, NY 14853.