ABSTRACT

Tan, Y.; Chen, J.; Chu, A., and Cui, L., 2020. Characteristics of the tide level in the Yangtze River Estuary under multi-factor integration effect. In: Malvárez, G. and Navas, F. (eds.), Global Coastal Issues of 2020. Journal of Coastal Research, Special Issue No. 95, pp. 1547-1552. Coconut Creek (Florida), ISSN 0749-0208.

The characteristics of the tidal water level in the Yangtze Estuary under the extreme hydrometeorological conditions have been investigated in this study. An integrated model including river flood, storm surge, astronomic tide and typhoon wave is applied to study the effect of typhoon, discharges, and waves on the tidal level. The result shows that typhoon is the dominant factor influencing the tidal water level process with the non-ignorable influence of river discharge. The tidal water levels under 6 extreme hydrometeorological scenarios have been simulated with various river discharges accounted. The results show that the influence of discharge on the tidal process decrease in the downstream direction. And there is an obvious quadratic relationship between the surges and the distance from the mouth to Jiangyin. The influence of discharge on the tidal water level is invisible in the North Branch, with the influence of discharge in the South Branch coincident with that in the upstream.

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