地震学报（英文版）2002，Vol.15Issue(3)：285-293,9.
Preliminary analysis on the tectonic stress level in the source region of Tangshan earthquake
Preliminary analysis on the tectonic stress level in the source region of Tangshan earthquake
摘要
Abstract
The abundant data of focal mechanism solutions in Tangshan region, China, are inverted for the tectonic stress field. Combined with tectonophysical consideration, the magnitude of the three principal stresses, as well as their vertical variation under the average crustal rock property, in the source region of the 1976 Tangshan earthquake is estimated. The relationship between crustal stress and friction (c, pore pressure P0 and stress shape factor ( is studied. The paper draws the conclusion that the vertical increasing rate of the maximum principal stress ( is directly proportional to friction, and inversely to pore pressure P0 and stress shape factor ( ; while the vertical increasing rate of the minimum principal tress ( is directly proportional to pore pressure P0, inversely to friction (c and stress shape factor (. This study is a try to invert the data of focal mechanism solutions for the complete stress tensor.关键词
tectonic stress field/focal mechanism solution/stress level/inversionKey words
tectonic stress field/focal mechanism solution/stress level/inversion分类
天文与地球科学引用本文复制引用
赵建涛,崔效锋,谢富仁..Preliminary analysis on the tectonic stress level in the source region of Tangshan earthquake[J].地震学报（英文版）,2002,15(3):285-293,9.基金项目
The MOST under contract number 95-S-05 and Joint Seismological Science Foundation of China (199022). （199022）
