Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR025386 |
Future Risks of Tsunami-Induced Seawater Intrusion Into Unconfined Coastal Aquifers: Insights From Numerical Simulations at Niijima Island, Japan | |
Liu, Jiaqi1,2; Tokunaga, Tomochika1 | |
2019-12-03 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:12页码:10082-10104 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | Tsunami-induced seawater inundation causes vertical seawater infiltration into coastal aquifers and induces unexpected salinization of fresh groundwater resources. Assessing future risks of seawater intrusion in tsunami-prone areas can provide essential information supporting disaster preparedness. In this study, we investigated seawater intrusion and aquifer recovery processes under the future Nankai earthquake and tsunami scenarios at Niijima Island, Japan. A groundwater model with a 2-D vertical cross section was developed to solve variable-density flow and salt transport in unsaturated-saturated media using the numerical code, FEFLOW. Our simulation results indicate that the unsaturated zone behaves as an initial storage of the infiltrated seawater and controls the maximum amount of seawater infiltration during the anticipated tsunami inundation. The bedrock structures affect the direction of seawater movement in the saturated zone and the flushing time of the polluted aquifer. Our analysis suggests that the tsunami inundation height, the rainfall recharge rate, and hydraulic conductivity are the primary sources of uncertainties in the simulation results. These findings have implications for other tsunami-prone zones with respect to the understanding of the relevant physical processes and model uncertainties. |
英文关键词 | tsunami seawater intrusion numerical modeling Niijima Island |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000500178400001 |
WOS关键词 | SEA-LEVEL RISE ; GROUNDWATER SALINIZATION ; RESOURCES ; IMPACTS ; FLOW |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/223949 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Tokyo, Grad Sch Frontier Sci, Dept Environm Syst, Kashiwa, Chiba, Japan; 2.Japan Soc Promot Sci, Tokyo, Japan |
推荐引用方式 GB/T 7714 | Liu, Jiaqi,Tokunaga, Tomochika. Future Risks of Tsunami-Induced Seawater Intrusion Into Unconfined Coastal Aquifers: Insights From Numerical Simulations at Niijima Island, Japan[J]. WATER RESOURCES RESEARCH,2019,55(12):10082-10104. |
APA | Liu, Jiaqi,&Tokunaga, Tomochika.(2019).Future Risks of Tsunami-Induced Seawater Intrusion Into Unconfined Coastal Aquifers: Insights From Numerical Simulations at Niijima Island, Japan.WATER RESOURCES RESEARCH,55(12),10082-10104. |
MLA | Liu, Jiaqi,et al."Future Risks of Tsunami-Induced Seawater Intrusion Into Unconfined Coastal Aquifers: Insights From Numerical Simulations at Niijima Island, Japan".WATER RESOURCES RESEARCH 55.12(2019):10082-10104. |
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