| 海平面上升对里下河地区洪涝灾害的影响 |
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| 引用本文： | 许朋柱.海平面上升对里下河地区洪涝灾害的影响[J].地理科学,1994,14(4):315-323. |
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| 作者姓名： | 许朋柱 |
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| 作者单位： | 中国科学院南京地理与湖泊研究所 南京210008 |
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| 摘 要： |
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| 关 键 词： | 里下河地区 海平面上升 洪涝 灾害 |
THE IMPACT OF SEA LEVEL RISE ON THE FLOOD AND WATERLOGGING DISASTERS IN LIXIAHE REGION |
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| Xu Pengzhu.THE IMPACT OF SEA LEVEL RISE ON THE FLOOD AND WATERLOGGING DISASTERS IN LIXIAHE REGION[J].Scientia Geographica Sinica,1994,14(4):315-323. |
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| Authors: | Xu Pengzhu |
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| Abstract: | Based on the numerical simulation technique of unsteady flow,an applied mathema-tical model has been established to compute the tidal currents in the tidal river network of the downstream areas of the Sheyang River Basin. The model is mainly the node-channel model and can be applied in water quantity computation for large-scale complex river networks in plain areas. The computational results show that the model can pre-cisely simulate the tidal currents.On the basis. of successful simulation of the tidal currents that happened in the past, the model has also been applied to predict the tidal current changes in the case of sea level rise. The predicted results show that:(1)If the sea level rises,the water level and tidal level of each river will also rise.(2)The average high tidal level just down Sheyang and Huangsha sluice gates will rise approximately as much as the value of sea level rise,while the rising scope of the av-erage low tidal level will be smaller than that of sea level,thus the tidal range will in-crease.(3)The discharge capacity of all rivers which connect with the Yellow Sea will de-crease obviously.At last,the author analyses the changes of the flood/waterlogging disasters if the 1991 flood meets with future sea level rise, and puts forward some countermeasures about disaster reduction and prevention. |
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| Keywords: | Lixiahe region River network Numerical simulation technique of unsteady flow Sea level rise Flood/waterlogging disasters |
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