Spatial Analysis of the Landslide Characteristics Caused by Heavy Rainfall in the Northern Kyushu District in July, 2017 Using Topography, Geology, and Rainfall Levels

Autor:	Toru Danjo, Takashi Kimura, Tomohiro Ishizawa, Flood Storm
Rok vydání:	2018
Předmět:	Hydrology 010504 meteorology & atmospheric sciences 0208 environmental biotechnology Landslide 02 engineering and technology Safety Risk Reliability and Quality 01 natural sciences Engineering (miscellaneous) Geology 020801 environmental engineering 0105 earth and related environmental sciences
Zdroj:	Journal of Disaster Research. 13:832-845
ISSN:	1883-8030 1881-2473
DOI:	10.20965/jdr.2018.p0832
Popis:	The heavy rain in Northern Kyushu District on July 5, 2017 caused a sediment disaster, resulting in the loss of many lives and damage to buildings. In this study, the primary causes (topography and geology) and trigger factors (rainfall) for the sediment disaster were spatially analyzed to examine factors contributing to slope failure. As a result, it was found that the number of slope failures was highest in metamorphic rock areas and the occurrence density of the landslides was highest in plutonic rock areas. In addition, the slope angle of the slope-failure source point was sizable in volcanic rock areas and many landslides occurred in the valley-formed areas. A rainfall analysis showed that the Akatani, Shirakitani, Sozu, Kita, Naragaya, Myoken, Katsura river basins and Ono, Ohi, Sata, Inaibaru river basins are different rainfall distributions, which significantly affected the slope-failure occurrence density.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a75245a3ca4da8359fab189e6313ab6e https://doi.org/10.20965/jdr.2018.p0832 Zobrazit plný text záznamu