Study on the Source Characteristics of the 2008 M_S6.8 Wuqia, Xinjiang Earthquake Sequence and the Stress Field on the Northeastern Boundary of Pamirs

详细信息   

• 责任者：Tang Lanlan (Seismological Bureau of Xinjiang Uygur Autonomous Region ; Urumqi 830011 ; China) ; Zhao Cuiping
• 刊名：Chinese Journal of Geophysics
• 出版年：2012
• 卷期：55(4)
• 关键词：强震 ; strong earthquakes ; 地震序列 ; seismic sequence ; 应力场 ; stress fields ; 新疆 ; Xinjiang ; 帕米尔高原 ; Pamirs
• 页码：p.1228-1239
• 图表：5 illus., 3 tables, 35 refs.
• 分类号：0500
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

Moment tensor solutions of 52 earthquakes occurred in the 2008 M_S6.8 Wuqia source region, Xinjiang, were estimated in time domain by using the long period waveforms recorded by the regional broadband stations. Then combined with the Harvard solutions,the characteristic of stress field in northeastern margin of Pamirs are studied. The result reveals that overthrusting is the main pattern on the curved Kazkeaerte active reverse fault fold zone, which is located in front of the collision zone between Indian Plate and Eurasian Plate, as well as the northern edge of the northward bulge arc structure.