Abstract
In recent years, the Bohai Bay has experienced frequent reclamation activities and significant changes in the coastline with the rapid development of economy. Coastline changes will influence the propagation of tide and ocean waves, and the storm surges may get worse as well. Based on the ADCIRC storm surge model, an unstructured triangular grid model driven by tide and wind was established to simulate the storm surge in Bohai Sea. The numerical simulation of hydrodynamic environment during typhoon NO.9711 under four coastline scenarios which are 1980, 2004, 2008 and 2015 had been carried out to investigate how coastal reclamation affects storm surges. The results reveal that the storm surge level and hazard risk in the reclamation areas has increased along with the changes of the coastline.
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