Flood simulation in the coastal lowlands of northern Jiangsu, China

Geo-spatial Information Science - Tập 2 - Trang 35-41 - 1999
Chen Xiaoling1
1National Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing, WTUSM, Wuhan, China

Tóm tắt

The coastal lowlands in northern Jiangsu Province, China, is characterized by low relief and low water surface gradient in streams. The flooding stages are commonly lower than the high-tide level and the tidal range is relatively small. All these factors prohibit rapid discharge of floodwater and make the flood regimes here extremely sensitive to the sea level rise. The 1991 Plum Rain was examined, when precipitation was significantly higher than normal. The one-dimensional open-channel non-conservative flow model was used to simulate the stream flow in the channel network of studied area. GIS technology was used to delineate the maximum in undated area by analyzing the DEMs.

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