U.S. Geological Survey, 384 Woods Hole Rd., Woods Hole, MA 02543 United States
University of Victoria, School of Earth and Ocean Sciences, Victoria, BC V8W 3P6 Canada ; Geological Survey of Canada, Pacific-Sidney Subdivision, Sidney, BC V8L 4B2 Canada
Moscow State University, Department of Geocryology, C-23, GS Vorobiovi Gori, Moscow, 119899 Russian Federation
U.S. Geological Survey, 384 Woods Hole Rd., Woods Hole, MA 02543 United States
U.S. Geological Survey, 345 Middlefield Rd., MS-999, Menlo Park, CA 94025 United States
Monterey Bay Aquarium Research Institute, 7700 Sandholdt Rd., Moss Landing, CA 95039 United States
Texas A & M University, Department of Oceanography, College Station, TX 77843 United States