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Study on Pn-wave velocity structure and anisotropy in the Sichuan-Yunnan and its adjacent areas
Author(s): 
Pages: 44-54
Year: Issue:  1
Journal: Chinese Journal of Geophysics

Keyword:  Pn波成像Pn波速度横向变化各向异性上地幔川滇地区;
Abstract: 川滇地区是中国大陆构造变形及地震活动最强烈的区域之一.本文利用从国际地震中心(ISC)、中国地震台网以及云南、四川、重庆三个省级地震台网的地震观测报告中严格挑选出的53673个Pn波到时数据,用Pn波层析成像方法反演了川滇地区的Pn波速度结构和各向异性.结果表明该地区上地幔顶部速度结构的横向变化与现代构造运动有明显的关联:盆地地区上地幔顶部速度明显高于其周边区域,四川盆地尤为突出,其上地幔顶部P波...
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