Relationship between landslides and long-term rainfall trends
Relationship between landslides and long-term rainfall trends
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DOI：
10.1007/s12517-022-10532-5
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发表时间：
2022-07
影响因子：
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通讯作者：
Tadamichi Sato;Y. Shuin
中科院分区：
文献类型：
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作者：
Tadamichi Sato;Y. Shuin
评估降雨变化如何引起滑坡，对于预防泥沙灾害非常重要。利用土壤水分指数(SWI)和三层水槽模型，研究了日本三叶县宫川村浅层和深层滑坡发生的时间不同与降雨长期变化之间的关系。三层水箱模型检测了降雨长期变化对山体滑坡的影响。我们了解到，第一个储油罐的变化表明存在浅层滑坡的潜在风险，而第二个和第三个储油罐的变化表明存在深层滑坡的潜在风险。我们的方法可以用来研究降雨的长期变化对同一地区不同时间或更广泛地区的滑坡的影响。此外，这些结果是有效的，因为用于计算SWI的三层坦克模型在日本各地都得到了应用，其有效性得到了验证。
Evaluating how the changes in rainfall caused landslides is important to prevent sediment disasters. Using the soil water index (SWI) and a three-layer tank model, this study examined the relationship between the occurrence of landslides and long-term changes in rainfall in Miyagawa Village, Mie Prefecture, Japan, where shallow and deep-seated landslides have occurred at different times. The three-layer tank model detected the effects of long-term changes in rainfall on landslides. We educated that the change in the first storage tank layer indicates the potential risk of shallow landslides, while that in the second and third storage tanks indicates the potential risk of deep-seated landslides. Our method could be used to examine the effects of long-term changes in rainfall on landslides in the same region at different times, or over a wider area. Besides, these results are valid because the three-layer tank model used to calculate the SWI is applied throughout Japan, and its effectiveness has been verified.