1. Pacific Northwest National Laboratory, 1100 Dexter Ave. N., Suite 400, Seattle, WA 98109.
2. Dept. Civil and Environment Engineering & Geodetic Science, Ohio State Univ., Byrd Polar Research Center, 1090 Carmack Rd., Columbus, OH 43210.
3. President, Blue Hill Hydraulics, Inc., 447 Falls Bridge Rd., Blue Hill, ME 04614.