| 摘要: |
| 采用1984年8月28日19时—29日24时黄浦江米市;渡至吴淞口水位和流量资料,根据描述河道中水流非恒定流动的Saini-Venant方程组,建立了模拟黄浦江潮位和潮量特征变化的数值模式。考虑未来海平面上升,预测了黄浦江潮位和潮量的变化及对周围环境的影响。计算结果表明,随着海平面的上升,黄浦江潮位相应增加,高潮位的上升值大于海平面上升值;低潮位的上升值小于海平面上升值,潮差增大。在同一海平面上升值下,潮差增量由下游向上游渐渐增大,随着海平面的上升,涨潮量和落潮量都相应增加。 |
| 关键词: 海平面上升 Sani-Venant方程组 数值模式 潮位 潮量 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金委重大项目,9488007号；中国科学院重大项目，87-45-03号 |
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| A NUMERICAL CALCULATION OF THE EFFECT OF SEA LEVEL RISE ON TIDAL LEVEL AND DISCHARGE OF HIUANGPU RIVER |
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Pan Liangbao
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Nanjing Institute of Geography and Limnology, Academia Sinica, 210008
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| Abstract: |
| The effect of sea level rise on coastal areas represents one of most important subjects of global change. Huangpu River will be one of the areas most vulnerable to impact. Future sea level rise will inundate wetlands and lowlands, exacerbate the risk of flood and waterlogging, threaten protection engineering and increase the salinity in this area.
Based on Saini-Venant equations, a numerical model to simulate the variation of tidal level and discharge of Huangpu River is developed. Prediction of tidal current and it’s effect on the environment is made by using the model in the case of sea level rise. The calculation results show:
(1) Huangpu River high-low tidal level (tidal table) rises with rise of sea level. The extent of rise of the high tide is greater than that of rise of sea level, but rise of the low tide is smaller than that of rise of sea level resulting in increase in tidal range.
(2) The volume of discharge for ebb and flood flow increases with sea level rise. |
| Key words: Sea level rise, Saini-Venant equations, Numerical model, Tidal level, Tidal discharge |
