【摘要】 本文提出了用大地测量资料在最小二乘意义下确定通海地震断层参数的一个方法.使用这一方法求得如下结果:断层走向N60°W;倾向S30……W;倾角84°;断层面长52公里;宽22公里;断面出露地表;平均走向滑距-2.24米;平均倾向滑距0.14米;地震矩8.5×10²⁶达因·厘米;应力降34巴;释放总应变能量下限为6.5×10²²尔格. 为了计算方便,我们简化了曼辛哈和斯迈里断层位移场的解析表达式.更多还原

【Abstract】 In this paper, we present a method to determine the earthquake fault porameters for the Tonghai (通海) eathquake from geodetic data in the sense of least squares. The results are as follows: strike of fault, N60°W; dip direction, S30°W; dip angle, 84°; length of the fault plane, 52 KM; its width, 22KM; the fault outcrops to the surface; average strike-slip dislocation, - 2.24 M; average dip-slip dislocation, 0.14M; seismic moment, 8.5 × 102 dyne, cm; stress drop, 34 fors; lower limit of the total strain energy release is 6.5× 1022 ergs.For convenience of calculations, We simplify the mansinha and smylie analytic expressions for the fault displacement field.更多还原