Whole simulation of storm surge for Pearl River estuary

Abstract

In this paper, the typhoon wind field is given by the Chen's Typhoon model. The simulation for the Pearl River estuary is nested with storm surge filed in the northern South China Sea. Using the two-dimensional hydrodynamic model ccost, the simulation model of the storm surge which considers the upriver runoff is established with the structured grid of the whole Pearl River estuary region. The landing process of the 0814 and 0915 typhoon which has great impact in the Pearl River Delta region in the recent years was simulated, and the comparison between the result of simulation and measured water level was given. It show that the storm surge model for the whole Pearl River estuary with the upriver runoff can better simulate the impact of storm surges in the whole Delta. The two huge eddies caused by the strong winds can be seen in the flow field of the Lingding estuary during the typhoon landing.