地震概论课程总结ppt.ppt
地震概论,现今地震学前沿一例 & 课程总结 2008.5.12,地震概论,一、现今地震学前沿一例,青藏高原东部区域地震层析成像,地震层析成像 (Seismic Tomography),地震层析成像 (Seismic Tomography),Regional Seismic Tomography in Eastern Tibetan Plateau,DING Zhifeng1), ZHAO Dapeng2) XUE Guangqi 3), LI Guiyin1), WANG Hui 1) 1) Institute of Geophysics, CEA, China 2) GRC, Ehime University, Japan 3) Chinese Academy of Geological Sciences,Outlines,Introduction Data and Methods Results Conclusions,Geologic setting map of Tibetan Plateau,The models of India-Eurasian collision（Willet, 1996）,Data and Methods,Data (1),Temporary Seismic Stations PASSCAL (Tibet) INDEPTH I, II, III (Tibet) YL (Himalaya, Nepal, Tibet) XA (Bhutan) HICLIMB (Himalaya) Sino-France (Qinghai) CDSN,Data (2),Permanent Seismic Stations Seismic networks of Tibet, Qinghai, Gansu, Sichuan, Yunnan provinces WWSSN stations (ISC),Used of the data: 984 local and regional events , 19152 arrivals; 102 teleseismic events, 2470 arrivals.,Tomography Methods,Zhao D., Hasegawa A., Horiuchi S., 1992; Zhao D., Hasegawa A., Kanamori H., 1994.,Seismograph Installment,Source Parameters Explosive Charge: 4002000kg Well Depth: 3035m Well Spacing: 15 20m,Model parameterization,Grid interval: 1° in horizontal, 20-30 km in depth,From Model Crust2.0 (Laske, Masters and Reif),Results,Tilmann, 2003,Kind, 2002,Epicenters of the teleseismic events,The models of India-Eurasian collision（Willet, 1996）,Conclusions,Conclusions (1),Seismic images obviously show the subduction and collision structures of the Indian plate and the Eurasian plate. The Indian lithosphere underthrusts up to the Bangong-Nujiang Suture.,Conclusions (2),The collision structure is different in southern Tibet between the two sides of the longitude of 91°E. The Indian crust and mantle delamination（分层，分页） occurs during the collision process.,End of Research Example,Thank you!,补充： 卫星干涉测位移,地震概论,二、课程总结,地震概论总结,一、自然科学的典型，学习了基本原理和方法，举例介绍了当今前沿及其他多个方面的地学知识，扩大选者的知识面 二、严格贯彻学校素质教育的理念，安排课间讲座弥补自然科学课程的“不足”,地震概论总结,三、开课两年，日趋壮大、完善 四、全身心投入。经费投入120,地震概论总结,五、多媒体、教学网、实物演示、图书馆讨论和资料片观赏结合 六、锐意教改：有所为、有所不为，为课程准确定位,地震概论总结,七、站在选课学生的角度完成各项教学任务，真正做到以学生为本 八、与悬念说再见、杜绝冤枉、没有委屈。公正对待每一位选课同学。我们会尽快督促教务或者亲自录入成绩，大家很快会从教务部（或平台）网络查到。,考试总结,考什么？,讨论分组,没有组的同学有下列各组供选，请选择一组！最后，没有组的同学将强制成组！,
