1. Assistant Professor, Dept. of Civil Engineering, City College, City Univ. of New York, 138th St. and Convent Ave., New York, NY 10031; formerly, Oceanography Division, Naval Research Laboratory, Code 7320, Stennis Space Center, MS 39529 (corresponding author).
2. Oceanographer, Oceanography Division, Naval Research Laboratory, Code 7320, Stennis Space Center, MS 39529..