【摘要】 利用新疆地震目录研究伽师-巴楚6.8级地震前后,该震区附近地震活动情况,并结合其强震震源机制解,2003年1月4日5.4级、5月4日5.8级和2月24日6.8级地震宏观地震烈度,对该区域应力场和破裂方向特征进行探讨。结果表明,这次6.8级地震主压应力轴为NNW-SSE向,破裂方向为SSE向,与1997～1998年伽师强震群的区域应力场主压应力为NNE-SSW向、破裂方向为NNE向完全不同。更多还原

【Abstract】 We have discussed the stress field and rupture direction characteristics of the Jiashi-Bachu MS 6.8 earthquake, by use of catalog to research the seismic activities, and combine the large earthquake focal mechanism solutions and seismic intensity of MS 5.4 earthquake in 4 Jan., 2003, MS 5. 8 earthquake in 4 May, 2003 and MS 6.8 earthquake in 24 Feb., 2003. The results indicate that the main compressive stress axis is NNW - SSE direction, the rupture direction is SSE direction. It is different from the result of Jiashi large earthquake swarms in 1997-1998, its main compressive stress field is NNE - SSW direction, seismic rupture is NNE direction.更多还原