摘要
在文献[1]工作的基础上,补充资料和扩大研究区范围后,应用新疆北天山西段的石油人工地震资料,对大震震源区及前兆敏感区在地下约10公里以内的浅层地壳结构作了进一步的探讨。所得结果进一步验证了大震震源位于低速区附近,而且是速度沿水平方向变化梯度最大处;而前兆敏感区在地下约6—8公里深度的速度亦明显偏低。
Based on literature[1] and supplementing more data to expand the range of research region, the crustal structure of epigenetic and precursory-sensative areas of large earthquakes have further been explored at depth about 10 km by using artificial seismic data originally for petroleum prospecting in the western segment of North Tainshan Mountains in Xinjiang Uighur Autonomous region. The results obtained further prove that the sources of large earhquakes were located near by the low velocity region where the horizontal gradient of wave velocity reaches the maximum, and that the velocity in the precursory-sensative region is also obviously low at depth of about 6-8km.
出处
《地震》
CSCD
北大核心
1991年第1期23-30,76,共8页
Earthquake
基金
地震科学联合基金
