Thomas D Lorenson¹, Daniel S Brothers², James E Conrad³, Amy E East⁴, Mary McGann⁵, J. Vaughn J. Barrie⁶, H. Gary Greene⁷, Kim Conway⁸, Randy Enkin⁶, Rachel M Lauer⁹, Nancy Prouty¹⁰ and Peter J Haeussler¹¹, (1)USGS Western Regional Offices Menlo Park, Menlo Park, CA, United States, (2)U.S. Geological Survey, Santa Cruz, CA, United States, (3)US Geological Survey, Menlo Park, CA, United States, (4)USGS San Diego Field Station, San Diego, United States, (5)U.S. Geological Survey, Menlo Park, CA, United States, (6)Geological Survey of Canada Sidney, Marine Geology, Sidney, BC, Canada, (7)Moss Landing Marine Laboratories, Moss Landing, CA, United States, (8)Geological Survey of Canada Pacific, Vancouver, Canada, (9)Rachel Lauer, Calgary, AB, Canada, (10)USGS, Baltimore, MD, United States, (11)USGS, Anchorage, AK, United States