【摘要】 对双差地震定位法的原理进行了阐述,并将双差地震定位法应用于北天山地区(42.5°—45°N,82°—89°E)地震的精确定位。利用新疆32个地震台站记录到的1336次MS≥2.0地震的22704条P波和S波震相读数资料,经重新定位后得到其中1133次地震的基本参数。重新定位结果显示了比较精细的震中分布图像和有所收敛的震源深度剖面图像,震源深度优势分布在6—35km,平均深度为20km,部分震中位置与震源深度变化较大的地震向断裂带靠近。更多还原

【Abstract】 \ We expounded the principle of dual-difference earthquake location method. And it was applied to locate precisely earthquakes of the north Tianshan mountain(42.5°—45°N,82°—89°E). We used 22 704 pieces of phase data about wave P and S of 1 336 earthquakes with M_S≥2.0 recorded by 32 stations of Xinjiang.By relocating them, we got the basic parameters of 1 133 earthquakes. The result of relocation shows the finer image of the earthquake distribution and the profile section of the convergen focal depth. We got the results of the predominance distribution in 6-35 km of the focal depth and the average depth in 20 km. By relocating earthquakes,part earthquakes which have bigger moving distances of epicenters and focal depths closed upon the rupture belt.更多还原