@article{oai:cis.repo.nii.ac.jp:00000019,
 author = {上野, 宏共 and 地下, まゆみ and 坂本, 尚史 and バルセ, ギルレモ R. and 出口, 一郎 and ウエノ, ヒロトモ and ジゲ, マユミ and サカモト, タカブミ and / デグチ, イチロウ and UENO, Hirotomo and JIGE, Mayumi and SAKAMOTO, Takabumi and BALCE, Guillermo R and DEGUCHI, Ichiro},
 journal = {千葉科学大学紀要},
 month = {Feb},
 note = {P(論文), Barangay Guinsaugon, a village, in southern Leyte Island, Philippines was buried by landslide debris in February, 2006. Geological survey of the landslide area was performed in 2006 and 2007. The cause of the landslide was determined with the survey and laboratory analysis of samples collected during the survey thereon. The most important factor detected was the occurrence of smectite, a kind of clay mineral. Smectite expands or swells at wet conditions, and is already known as the material sharing the resposibility of landslides. Apparently, smectite was formed at the late stage of volcanic activity in the area. The second factor was the fault system of the Philippine Fault Zone. The faults cut the area in many directions, and loosen the volcanic rocks. There were some observations indicating that many landslides occurred prior to the February 2007 landslide. Another factor acting as a trigger is the heavy rainfall; over 700 mm for two weeks prior to the landslide.},
 pages = {135--146},
 title = {フィリピン共和国レイテ島南部地すべり地域の地質と粘土鉱物},
 volume = {1},
 year = {2008}
}