1. Department of Geosciences University of Alaska Fairbanks Fairbanks, AK 99775, U.S.A.
2. National Geodetic Survey National Oceanic and Atmospheric Administration Anchorage, AK 99513, U.S.A.
3. U.S. Geological Survey Pacific Coastal and Marine Science Center Santa Cruz, CA 95060, U.S.A.
4. Institute of Northern Engineering University of Alaska Fairbanks Fairbanks, AK 99775, U.S.A.
5. Native Village of Port Heiden Port Heiden, AK 99549, U.S.A.
6. Alaska Division of Geological & Geophysical Surveys Anchorage, AK 99508, U.S.A.