Cross-Fault Deformation Observation and Characteristics of Crustal Stress in Tianshan Region

详细信息   

• 责任者：Zhang Hongyan (Key Laboratory of Crustal Dynamics ; Institute of Crustal Dynamics ; China Earthquake Administration ; Beijing 100085 ; China) ; Xie Furen
• 刊名：Journal of Northwest University
• 出版年：2013
• 卷期：43(4)
• 关键词：地形变 ; ground deformation ; 天山 ; Tianshan Mountains
• 页码：p.617-622
• 图表：2 illus., 4 tables, 8 refs.
• 分类号：0300
• issnNo：ISSN1000-274X
• isbnNo：CN61-1072/N

摘要

     Based on the deformation observation data of 6 cross fault survey point in Tianshan region, taking the two walls of fault as indeformable rigid block and analyzing the quantitative relationship between relative sliding of fault planes and relative displacement of the sites on the two walls on the ground surface to obtain the fault slip data, and then using the Sliding Direction Fitting Method （SD- FM） to invert the basic characteristics of crustal stress of 6 cross-fault survey points in Tianshan region. The result from cross-fault data of 6 survey points indicates that the stress regime is strike-slip type at Hutubi point in the north Tianshan and its crustal stress is characterized by NNW-SSE compressional stress and NEE-SWW extensional stress.