Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Web of Science (13) Citing Articles via Google Scholar Google Scholar Articles by Huang, C.-C. Articles by Jibson, R. W. Search for Related Content GeoRef GeoRef Citation

Influence of Surface-Normal Ground Acceleration on the Initiation of the Jih-Feng-Erh-Shan Landslide during the 1999 Chi-Chi, Taiwan, Earthquake

Central Geological Survey
No. 2, Lane 109, Huahsin Street
Chungho Taipei, Taiwan
huangcc{at}linx.moeacgs.gov.tw
dljp{at}linx.moeacgs.gov.tw
(C.-C.H., Y.-H.L.)
U.S. Geological Survey
MS 977
345 Middlefield Road
Menlo Park, California 94025
liu{at}usgs.gov
dkeefer{at}usgs.gov
(H.-P.L., D.K.K.)
U.S. Geological Survey
Box 25046, MS 966
Denver Federal Center
Denver, Colorado 80225
jibson{at}usgs.gov
(R. W. J.)

Manuscript received 24 August 2000.

The 1999 Chi-Chi, Taiwan, earthquake triggered numerous landslides throughout a large area in the Central Range, to the east, southeast, and south of the fault rupture. Among them are two large rock avalanches, at Tsaoling and at Jih-Feng-Erh-Shan. At Jih-Feng-Erh-Shan, the entire thickness (30-50 m) of the Miocene Changhukeng Shale over an area of 1 km² slid down its bedding plane for a distance of about 1 km. Initial movement of the landslide was nearly purely translational. We investigate the effect of surface-normal acceleration on the initiation of the Jih-Feng-Erh-Shan landslide using a block slide model. We show that this acceleration, currently not considered by dynamic slope-stability analysis methods, significantly influences the initiation of the landslide.