Triggering and runaway processes of catastrophic Tsaoling landslide induced by the 1999 Taiwan Chi-Chi earthquake, as revealed by high-velocity friction experiments

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题名:	Triggering and runaway processes of catastrophic Tsaoling landslide induced by the 1999 Taiwan Chi-Chi earthquake, as revealed by high-velocity friction experiments
作者:	李錫堤;Togo, Tetsuhiro;Shimamoto, Toshihiko;Dong, Jia-Jyun;Lee, Chyi-Tyi;Yang, Che-Ming
贡献者:	地震災害鏈風險評估及管理研究中心
关键词:	Deceleration;Deep-seated landslide;Earthquake-induced landslide;Earthquakes;Friction;High-velocity friction experiment;Landslides;Landslides & mudslides;Oscillations;Overburden;Plate tectonics;Pliocene;Sedimentary rocks;Seismic activity;Seismic phenomena;Seismology;Shale;Shales;Slip;Tsaoling landslide
日期:	2014-03-28
上传时间:	2026-04-23 11:27:13 (UTC+8)
出版者:	Wiley-Blackwell;Washington: Blackwell Publishing Ltd
摘要:	摘要： Pliocene sedimentary rocks of about 130 Mm3 in volume slid along bedding planes dipping by 14°, with an average speed of about 35 m/s, during the Tsaoling landslide. We conducted friction experiments to reproduce the initiation processes of this landslide, by idealizing landslide movements during the earthquake as accelerating/decelerating motion. Experiments were done on shale from the field, at 3 MPa normal stress corresponding to the overburden pressure. Results indicate that the accelerating/decelerating motion causes weakening and strengthening at each oscillation cycle and results in overall slip weakening which can be approximated as an exponential slip weakening. Behaviors during oscillatory slip are fairly similar to those during sliding at constant slip rates. Newmark analysis with measured frictional properties reveals that the landslide can be triggered with wet gouge properties, but the landslide motion stops with parameters for dry shale gouge. Delayed initiation of the landslide is consistent with a survivor's witness. Key Points High‐velocity friction experiments reproduced earthquake‐induced landslide 其他題名： Geophys. Res. Lett 出版者： Washington: Blackwell Publishing Ltd 出版日期： 2014-03-28 出處： Geophysical Research Letters, 2014-03, Vol.41 (6), p.1907-1915 資源來源： Wiley Online Library - AutoHoldings Journals 版權： 2014. American Geophysical Union. All Rights Reserved. 識別號： ISSN: 0094-8276 識別號： ISSN: 1944-8007 識別號： EISSN: 1944-8007 識別號： DOI: 10.1002/2013GL059169
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