大地测量与地球动力学2011，Vol.31Issue(5)：39-43,5.
华北北部地区震源机制解及构造应力场特征分析
ANALYSIS OF FOCAL MECHNISM AND TECTONIC STRESS FIELD FEATURES IN NORTHERN PART OF NORTH CHINA
摘要
Abstract
With 848 M1≥2.0 focal mechanisms which occurred during in January ,2002 to June 2010 in northern part of North China,and according to regional tectonic feature, the area is divided into four studied regions to analyze the focal mechanism features of each partitions and to research stress field feature parted by 1 ° x 1 °and with 0.5°slip trapeze zone. The results show that the maximum principle stress orientation of various studied partitions all is NEE, the minimum principle stress orientation is NNW, they are basically consistent with the direction of tectonic stress field in North China. The stress structures of various partitions all are of strike-slip type, the principle feature of tectonic stress field in northern part of North China is horizontal stress action, the way of focal strain-slip way is strike-slip mainly.关键词
华北地区/震源机制解/构造应力场/最大主应力方位/最小主应力方位Key words
North China/focal mechanism/tectonic stress field/maximum principle stress orientation/minimum principle stress orientation分类
天文与地球科学引用本文复制引用
武敏捷,林向东,徐平..华北北部地区震源机制解及构造应力场特征分析[J].大地测量与地球动力学,2011,31(5):39-43,5.基金项目
化京市地震局任务性科技专项(JZX-201103) （JZX-201103）
