1. Texas Transportation Institute, Texas A&M University System, College Station, Texas 77843, United States
2. Marine Science Laboratory, Pacific Northwest National Laboratory, Sequim, Washington
98382, United States
3. Department of Geological Sciences, University of Florida, Gainesville, FL
4. Department of Marine Science, Texas A&M University at Galveston, Galveston, Texas 77553, United States
5. Pacific Northwest National Laboratory, P.O, Box 999, Richland, Washington
99352, United States
6. Department of Geology and Geophysics, Texas A&M University, College Station, Texas 77843, United States