Philip R Thompson, University of Hawaii at Manoa, Honolulu, HI, United States, Gary T Mitchum, Univ South Florida, College of Marine Science, Saint Petersburg, FL, United States, Guy Woppelmann, LIENSs, Université de la Rochelle-CNRS, La Rochelle, France, Mark Merrifield, SCRIPPS, San Diego, United States, James H Foster, University of Hawaii, Hawaii Institute of Geophysics and Planetology, Honolulu, HI, United States, Michael G Bevis, Ohio State University Main Campus, Columbus, OH, United States and Dana J Caccamise II, NOAA's National Geodetic Survey, San Diego, CA, United States