Abstract：With 848 Ml≥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°×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 strikeslip type, the principle feature of tectonic stress field in northern part of North China is horizontal stress action, the way of focal strainslip way is strikeslip mainly.
Wu Minjie,Lin Xiangdong,and Xu Ping. ANALYSIS OF FOCAL MECHNISM AND TECTONIC STRESS FIELD FEATURES IN NORTHERN PART OF NORTH CHINA[J]. jgg, 2011, 31(5): 39-43.
