Shellie Habel1, Charles H Fletcher2, Kolja Rotzoll3, Aly I El-Kadi4. 1. University of Hawai'i at Manoa, School of Ocean and Earth Science and Technology, Department of Geology and Geophysics, POST Building, Suite 701, 1680 East-West Road, Honolulu, HI 96822, USA. Electronic address: Skey@hawaii.edu. 2. University of Hawai'i at Manoa, School of Ocean and Earth Science and Technology, Department of Geology and Geophysics, POST Building, Suite 701, 1680 East-West Road, Honolulu, HI 96822, USA. 3. University of Hawai'i at Manoa, Water Resources Research Center, 2540 Dole St., Holmes Hall 283, Honolulu, HI 96822, USA. 4. University of Hawai'i at Manoa, School of Ocean and Earth Science and Technology, Department of Geology and Geophysics, POST Building, Suite 701, 1680 East-West Road, Honolulu, HI 96822, USA; University of Hawai'i at Manoa, Water Resources Research Center, 2540 Dole St., Holmes Hall 283, Honolulu, HI 96822, USA.