William Hefner¹, Scott L Nooner¹, William W. Chadwick Jr², Delwayne R Bohnenstiehl³, David W Caress⁴, Jennifer Brophy Paduan⁴ and David A Clague⁴, (1)University of North Carolina at Wilmington, Dept of Earth and Ocean Sciences, Wilmington, NC, United States, (2)NOAA PMEL Earth Ocean Interactions Program, Newport, OR, United States, (3)North Carolina State Univ., Marine, Earth and Atmospheric Sciences, Raleigh, NC, United States, (4)Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States