Every year there are many typhoons landed in coastal areas southeast of China. During the typhoon attacking, the bottom sediment in coastal areas is easily suspended and transported by large wave and storm surge. The sudden deposition must be happened because mass sediment deposits in the channel or the harbor basin during the typhoon. The sudden deposition may cause serious effects to the ship navigation and port operation. In the traditional forecasted method, the researcher adopts the empirical formula which is added the period of wind reappearing, effective wind energy and effective wave height, to forecast the sudden deposition of the channel and the harbor basin. In this paper, the new method based on simulating typhoon process is developed. According to the data of wind, wave, air pressure, hydrology, and sediment during the violent typhoon "WIPHA" (NO.13 typhoon of 2007), the typhoon process is simulated and the sudden deposition of Yangshan port area is forecasted.
Typhoon which often brings gales, heavy rains and surges, is one of the most serious catastrophic weathers for the coastal areas of China (HU, et al., 2003). The Yangtze Estuary and its adjacent waters can be attacked by typhoons almost every year. During a typhoon, storm surges stir up large quantity of sediments, which may lead to the erosion of tidal flats. The generation of typhoon waves and storm surges is closely related, as they are both generated by the wind (YIN, et al., 2009). In the traditional forecasted method, the researcher adopts the empirical formula which is added the period of wind reappearing, effective wind energy and effective wave height, to forecast the sudden deposition of the channel and the harbor basin. In this paper, the new method based on simulating typhoon process is developed.
