1. Pacific Coastal and Marine Science Center, U.S. Geological Survey; Santa Cruz; California; USA
2. Coastal Field Office, Oregon Department of Geology and Mineral Industries; Newport; Oregon; USA
3. Coastal Monitoring and Analysis Program, Washington State Department of Ecology; Olympia; Washington; USA
4. Department of Geosciences; Oregon State University; Corvallis; Oregon; USA
5. Scripps Institution of Oceanography; University of California, San Diego; La Jolla; California; USA