Study on Bohai sea tidal dynamics under extratropical storm surge

摘要

Bay is one of the areas affected by by extratropical storm surges and the economy loss there due to this is remarkable. A numerical model is established to couple the astronomic tide and the storm surge for Bohai Sea and its vicinity. Based on validation, it is applied to analyse the influence of the extratropical storm surge in Oct. 2003 on the water level set-up/down and on the spatial-temporal variations of the flow fields. Due to the extratropical storm surge, the water level setup is obvious along the Bohai Bay coast; the water level fluctuation varies greatly. The tidal flow of Bohai Sea is changed from the local reversing tidal current to unidirectional flow.