@article{oai:nied-repo.bosai.go.jp:00000745,
 author = {石澤 友浩 and 檀上 徹},
 issue = {53},
 journal = {主要災害調査, National Disaster Research Report},
 month = {Mar},
 note = {平成30年7月豪雨では短期的な集中豪雨ではなく断続的な豪雨により2,581件の土砂災害が発生した．本稿では，土砂災害に関する誘因の評価を分析するために，平成30年7月豪雨での土砂災害の発生時間に関する聞き取り調査や気象庁解析雨量を用いた雨量分析を実施し，推定した土砂災害の発生時刻と雨量分析による雨量指標の時間変化について分析した．20箇所の土砂災害を分析した結果，土壌雨量指数が期間内最大値で土砂災害が発生する事例が多いことを示した．さらに，土壌雨量指数の警報基準値に着目したところ，本稿で対象とした土砂災害の80% は，警報基準値を超えてからも土壌雨量指数が上昇し続けた場合，約18時間以内に土砂災害が発生したことを示した．, The July 2018 heavy rain triggered a large number of sediment disasters. This paper reports on a study conducted to analyze evaluations of landslide triggers. In the study, a hearing survey was conducted on the timing of occurrence of the sediment disasters caused by the Heavy Rain Event of July 2018, and a rainfall analysis was made by using Japan Meteorological Agency’s analyzed rainfall data. An analysis of the disasters at the 20 sites (slope failures and debris flows) examined for the purposes of the study revealed that many of those disasters occurred when the soil water index during the study period (June 28, 2018 to the estimated time of occurrence of a sediment disaster) was maximized. The analysis also indicated that sediment disasters tended to occur when hourly rainfall was relatively low and the soil water index was large.},
 pages = {83--90},
 title = {平成30年7月豪雨による土砂災害発生の推定時刻における土壌雨量指数},
 year = {2020},
 yomi = {イシザワ トモヒロ and ダンジョウ トオル}
}