1. College of EarthOcean, and Environment, University of DelawareNewark Delaware USA
2. Now at Department of OceanographyPusan National UniversityBusan South Korea
3. University of Delaware and Xiamen UniversityJoint Institute of Coastal Research and ManagementNewark Delaware USA
4. Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena California USA