1. U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center, Sioux Falls, SD 57198, U.S.A.
2. U.S. Geological Survey, Coastal and Marine Geology Program, Reston, VA 20192, U.S.A.
3. U.S. Geological Survey, Eastern Geographic Science Center, Reston, VA 20192, U.S.A.
4. U.S. Geological Survey SPCMSC, Baton Rouge Colocation Office, Louisiana Coastal Protection and Restoration Authority, Baton Rouge, LA 70801, U.S.A.