1. Global Undersea Research Unit; University of Alaska Fairbanks; P. O. Box 475; Moss Landing; California; 95039; USA
2. Department of Oceanography; University of Hawaii; 1000 Pope Road,; Honolulu; Hawaii; 96822; USA
3. Earth Sciences Department and Center for the Study of Imaging and Dynamics of the Earth; University of California; Santa Cruz; California; 95064; USA
4. Division of Marine and Atmospheric Chemistry, Rosenstiel School of Marine and Atmospheric Sciences; University of Miami; 4600 Rickenbacker Causeway,; Miami; Florida; 33149; USA
5. Pacific Geoscience Centre; Geological Survey of Canada; P.O. Box 6000; Sidney, British Columbia; Canada; V8L 4B2
6. Pacific Marine Environmental Laboratory; NOAA; 7600 Sandpoint Way NE,; Seattle; Washington; 98115; USA