1. President, Applied Fluids Engineering, Inc., Long Beach, CA 90803.
2. Professor and Chair, Dept. of Ocean Engineering, Univ. of Rhode Island, Narragansett, RI 02882.
3. British Geological Survey, Keyworth, Nottingham, NG12 5GG, UK.
4. Professor, Hawaii Institute of Geophysics and Planetology, Univ. of Hawaii, Honolulu, HI 96822.