A Process Study of Seiches over Coastal Waters of Shenzhen China after the Passage of Typhoons

Analysis of sea-level observations demonstrates that Typhoons Mawar (2017) and Mangkhut (2018) induced seiches in both Dapeng Bay Daya near Shenzhen China, with periods varying from about 3.5 to 4.0 h. Typhoon also generated a period 1.2 Seiches such the two bays have not been reported past. In this study, we investigate main processes affecting over these coastal waters using nested-grid ocean circulation modeling system. The modelled results typhoon-induced agree well observations, which indicates after passage typhoons are dynamically free waves by storm-induced accumulation water bodies bays. Model sensitivity experiments show wind directions an important influence on type characteristics seiches. When stress causes body accumulate cross-bay direction, closed generated. along-bay semi-closed produced. Because irregularity bathymetry coastline variability directions, types can exist simultaneously