Salinization processes in an alluvial coastal lowland plain and effect of sea water level rise
Salinization processes in an alluvial coastal lowland plain and effect of sea water level rise
复制标题
冲积沿海低地平原的盐化过程和海平面上升的影响
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
K. Koga
中科院分区：
文献类型：
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作者：
N. Don;N. Hang;H. Araki;H. Yamanishi;K. Koga
在沿海地区，地下水和含水层系统很容易受到污染和污染。此外，海平面上升还威胁到许多沿海地区和小岛屿的生存能力。在日本九州岛西南部的白石低地平原，由于过度开采地下水而引起的地面沉降和盐分入侵等环境问题，长期以来一直被认为是水问题，并成为公众关注的问题。本研究建立了地表水和地下水一体化模型，并将其应用于石市遗址，模拟地下水流动水力学，预测冲积低地平原的盐分入侵过程。模拟结果表明，含水层内地下水位随气候和抽水条件的变化而变化较大。它还发现，如果目前的地下水开采速度继续下去，预计沿海地区将出现海水入侵。此外，还考虑了由于含水层压缩和全球气候变化而导致海平面相对上升的海水入侵问题。因此，与参考案例相比，海水入侵似乎延伸到离海岸更远的陆地上。这项研究还提出了一种可能的替代方案，通过抽取地下水来缓解相反的影响。
In coastal areas, groundwater and aquifer systems are easily prone to pollution and contamination. Moreover, sea level rises also threaten the viability of many coastal zones and small islands. In the Shiroishi lowland plain, southwestern Kyushu Island of Japan, some environmental problems such as land subsidence and salinity intrusion due to over pumping of groundwater have long been recognized as water problems and become causes for public concern. In this study, an integrated surface and groundwater model was established and applied to the Shiroishi site to simulate groundwater flow hydraulics and predict the salinity intrusion process in the alluvial lowland plain. The simulated results show that groundwater levels in the aquifer greatly vary in response to varying climatic and pumping conditions. It is also found that sea water intrusion would be expected along the coast if the current rates of groundwater exploitation continue. Furthermore, sea water intrusion with a relative rise in sea water level due to aquifer compression and global climatic change was also considered. As a result, sea water intrusion appears to extend much farther in land from the coast compared to a reference case. The study also suggests a possible alternative to mitigate the inverse effects by pumping groundwater.