Real-Time Slope Stability Analysis Utilizing High-Resolution Gridded Precipitation Datasets Based on Spatial Interpolation of Measurements at Scattered Weather Station
Nanaha Kitamura*1,, Akino Watanabe*1, Akihiko Wakai*1, Takatsugu Ozaki*1, Go Sato*2, Takashi Kimura*3, Jessada Karnjana*4, Kanokvate Tungpimolrut*4, Seksun Sartsatit*4, and Udom Lewlomphaisarl*4
1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
*2Teikyo Heisei University, Tokyo, Japan
*3Ehime University, Ehime, Japan
*4National Electronics and Computer Technology Center, Pathum Thani, Thailand
Measuring the amount of rainfall is essential for a wide-area evaluation of the risk of landslide disaster using a real-time simulation. In Thailand, located in Monsoon Asia, point observation is conducted using a rain gauge. Interpolation calculation is crucial for obtaining the planar rainfall intensity for the wide-area analysis from scattered point observation data. In this study, to accurately calculate rainfall intensity using the inverse distance weighting (IDW) method, the parameters affecting the results are examined. Additionally, using obtained rainfall data, a simple prediction calculation of groundwater level fluctuation by Wakai et al.  and Ozaki et al.  is performed. Finally, the relationship between the rainfall intensity and the fluctuation of groundwater level will be discussed.
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