地球学报Issue(3)：352-360,351,10.DOI:10.3975/cagsb.2015.03.10
历史强震对渭河中游群发大型滑坡的诱发效应反演
Inversion of the Inducing Effects of Historical Strong Earthquakes on Large-scale Landslides around the Middle Reaches of the Weihe River
摘要
Abstract
Exemplified by the middle reaches of the Weihe River, the authors tentatively developed a new method for the study of the inducing effects of historical earthquakes on regional large-scale landslides. First, an analysis of regional active tectonics and fault-controlling slope sliding revealed that the inducing effects of historical strong earthquakes on regional large-scale landslides around the middle reaches of the Weihe River must not be neglected. Secondly, the farthest epicentral distance of seismic landslides distribution was calculated and analyzed. On such a basis, the authors hold that inducing effects of 4 key historical strong earthquakes within 300km around the middle reaches of the Weihe River should be studied with special attention, i.e., Qishan MS7.0 earthquake in 780 BC, Tianshui south MS8.0 earthquake in 1654 AD, Huaxian MS8.25 earthquake in 1556 AD and Haiyuan MS8.5 earthquake in 1920 AD. Then, taking Qishan earthquake as an example, the authors described the inversion method for seismic landslide displacement and hazard assessment based on Newmark displacement model. The other 3 historical earthquakes triggering landslide displacement were inversed, and the inversion results were quantitatively compared with the distribution of existing large-scale landslides to show the spatial matching degree. The result indicates that Tianshui south MS8.0 earthquake served as the strongest one among the earthquakes inducing regional large-scale landslides around the middle reaches of the Weihe River area.关键词
历史地震/滑坡/Newmark位移模型/反演/渭河中游/黄土Key words
historical earthquake/landslide/Newmark displacement model/inversion/middle reaches of the Weihe River/loess分类
天文与地球科学引用本文复制引用
王涛,吴树仁,石菊松,辛鹏,梁昌玉..历史强震对渭河中游群发大型滑坡的诱发效应反演[J].地球学报,2015,(3):352-360,351,10.基金项目
本文由国家自然科学基金项目(编号:41102165)、国家“十二五”科技支撑计划课题(编号:2012BAK10B02)和中国地质调查局地质调查项目(编号:1212011140003 （编号:41102165）
12120114035501)联合资助。 （）
