caa a22 4500 475813820 CHVBK 20180406123804.0 cr unu---uuuuu 170329e20000801xx s 000 0 eng 10.1007/s000240050020 doi (NATIONALLICENCE)springer-10.1007/s000240050020 Yamagishi H. Niigata University, Igarashi 2 machi 8050, Niigata 950-2181 Japan. E-mail: hiroy@woody.ge.niigata-u.ac.jp, JP aut Recent Landslides in Western Hokkaido, Japan [Elektronische Daten] [H. Yamagishi] —Western Hokkaido, the northernmost island of Japan, is prone to landsliding due to geologic, geomorphologic and climatic change. From 1985 to 1997, many rapid large-scale landslides occurred in western Hokkaido, several of which are reviewed in this paper. The 1988 Kamaya Slide, the 1991 Tachimachi-misaki Slide (which was preceded by the 1985 Orito Slide), the 1993 Okushiri-Port Slide, and the 1994 Motochi Earthflow are described. Finally, two sea-cliff rockfalls are also described.¶The Okushiri-port Slide and the Toyohama Tunnel Rockfall claimed 29 and 20 lives, respectively. Except for the Okushiri-port Slide, which was induced by Hokkaido Nansei-oki Earthquake, most of the slides and rockfalls were probably related to geological structures, such as gentle-dipping strata interbedded with clayey tuffs and were triggered by long-duration and/or high precipitation, causing increased groundwater levels and/or high water pressures. Birkhäuser Verlag Basel,, 1999 Key Words: Landslide, rockfall, earthflow, dip-slipping, Hokkaido, rock slide nationallicence https://doi.org/10.1007/s000240050020 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s000240050020 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Yamagishi H. Niigata University, Igarashi 2 machi 8050, Niigata 950-2181 Japan. E-mail: hiroy@woody.ge.niigata-u.ac.jp, JP aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer