1. Dept. of Geological Sciences, Case Western Reserve Univ., 10900 Euclid Ave., Cleveland, OH 44106-7216.
2. CSDMS Integration Facility, INSTAAR, Univ. of Colorado, Boulder, CO 80309-0545.
3. NOAA Great Lakes Environmental Research Laboratory, 4840 S. State Rd., Ann Arbor, MI 48108-9719.
4. Dept. of Geography, 3234 Wood Hall, Western Michigan Univ., Kalamazoo, MI 49008-5424.
5. Key Laboratory for Coast and Island Development, Ministry of Education and Jiangsu Province, Nanjing Univ., Nanjing 210093, China (corresponding author).