1. Applied Research Laboratories, The University of Texas at Austin, P.O. Box 8029, Austin, Texas 78713-8029, USA
2. Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, Mississippi 39180-6199, USA
3. Field Research Facility, Coastal and Hydraulics Laboratory, U.S. Army Engineer Research and Development Center, 1261 Duck Road, Kitty Hawk, North Carolina 27949, USA