1 Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China 2 Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China 3 Research Institute of Petroleum Exploration and Development, Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu 736202, China
Application of teleseismic tomography to the study of shallow structure beneath Shizigou in the western Qaidam basin
1 Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China 2 Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China 3 Research Institute of Petroleum Exploration and Development, Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu 736202, China
摘要Teleseismic body wave traveltime tomography is used to inverse the three-dimensional seismic velocity structure beneath Shizigou in the western Qaidam basin. The travel time are picked from the continuous observation data on a small seismic array of stations deployed during 2004–2007. The tomographic results obtained indicate that a NW-trending low velocity anomaly just beneath the target region insert northeastwards with a high dip angle. In the north, northeast and east of the low velocity anomaly, some high-velocity anomalies distribute with the same strike and coverage as those of Shizigou anticline.
Abstract：Teleseismic body wave traveltime tomography is used to inverse the three-dimensional seismic velocity structure beneath Shizigou in the western Qaidam basin. The travel time are picked from the continuous observation data on a small seismic array of stations deployed during 2004–2007. The tomographic results obtained indicate that a NW-trending low velocity anomaly just beneath the target region insert northeastwards with a high dip angle. In the north, northeast and east of the low velocity anomaly, some high-velocity anomalies distribute with the same strike and coverage as those of Shizigou anticline.
基金资助:Special Fund for National Oil and Gas (XQ-2004-01) and International Program for Science and Technology Cooperation (2006DFA21350)
通讯作者:
Xiaoming Xu
E-mail: jhlzxxm@163.com
引用本文:
Xiaoming Xu, Yinsheng Ma, Danian Shi, Xiaofeng Wang, Chengming Yin. Application of teleseismic tomography to the study of shallow structure beneath Shizigou in the western Qaidam basin[J]. 《地震学报》英文版, 2009, 22(2): 189-195.
Xiaoming Xu, Yinsheng Ma, Danian Shi, Xiaofeng Wang, Chengming Yin. Application of teleseismic tomography to the study of shallow structure beneath Shizigou in the western Qaidam basin. Earthquake Science, 2009, 22(2): 189-195.
