T. Elias and A.J. Sutton work for the U.S. Geological Survey at the Hawaiian Volcano Observatory, Hawaii National Park, HI 96718
J.B. Stokes can be reached at P.O. Box 364, Volcano, HI 96785
T.J. Casadevall works for the U.S. Geological Survey at the National Center, Reston, VA 22092