Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HIRAKAWA Yasuyuki and OKANO Kazuyuki and UENO Toshiyasu and SATOFUKA Yoshifumi and TSUTSUMI Daizo and MIYATA Shusuke,Topographical and geological factors to advance debris flows occurrence on hillslope covered with pyroclastic-flow deposits for 20 years after the eruption in Mt. Unzen-Fugen-dake,Journal of the Japan Society of Erosion Control Engineering,02868385,Japan Society of Erosion Control Engineering,2019-05-15,72,1,21-31,https://cir.nii.ac.jp/crid/1390003825181500288,https://doi.org/10.11475/sabo.72.1_21