[1] VANDERBILT UNIV, DEPT PHYS, NASHVILLE, TN 37235 USA
[2] UNIV HAWAII, HAWAII INST GEOPHYS, HONOLULU, HI 96822 USA
[3] UNIV HAWAII MANOA, DEPT OCEANOG, HONOLULU, HI 96822 USA
[4] UNIV HAWAII MANOA, HAWAII DUMAND CTR, HONOLULU, HI 96822 USA
[5] MOSS LANDING MARINE LABS, MOSS LANDING, CA 95039 USA
[6] UNIV TOKYO, INST COSM RAY RES, TOKYO 113, JAPAN
[7] UNIV CALIF SAN DIEGO, SCRIPPS INST OCEANOG, CALIF DEPT CONSERVAT, DIV MINES & GEOL, LA JOLLA, CA 92093 USA