1. School of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao, China
2. School of Electronic Information, Wuhan University, Wuhan, China
3. First Institute of Oceanography, Ministry of Natural Resources, Qingdao, China
4. Sino Australian Research Consortium for Coastal Management, School of Science, University of New South Wales, Canberra, ACT, Australia