Expansion of GPS-Acoustic Arrays offshore the Cascadia and Alaska Subduction Zones
C David Chadwell, University of California San Diego, La Jolla, CA, United States, David A Schmidt, University of Washington Seattle, Department of Earth and Space Sciences, Seattle, United States, Spahr C Webb, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Scott L Nooner, University of North Carolina at Wilmington, Dept of Earth and Ocean Sciences, Wilmington, NC, United States, Todd L Ericksen, U.S. Geological Survey, Earthquake Science Center, Moffett Field, United States, Benjamin A. Brooks, US Geological Survey, Menlo Park, United States and James H Foster, University of Hawaii, Hawaii Institute of Geophysics and Planetology, Honolulu, HI, United States