【摘要】 利用小浪底水库架设的8个数字地震台观测数据,分析2008年9月—2011年12月记录的水库附近196次地震事件,采用和达法计算该区波速比值和泊松比值,结果表明:①小浪底区域波速比值在1.461—2.027,相关系数在0.9763—0.9995,平均波速比值为1.700,略低于地壳的平均波速比1.732,泊松比值在0.17—0.33,平均泊松比值为0.23;②反映了小浪底水库区域地下介质复杂的特性。更多还原

【Abstract】 According to multi-station Wadati diagram method,the data of 8 digital seismic stations,196 seismic events between 2008.9 to 2011.12 are analyzed and the characteristics of wave velocity ratio and Poisson’s ratio value in Xiaolangdi Reservoir area is studied.The results show:①Wave velocity ratio in the range of 1.461—2.027,the correlation coefficient between 0.9763—0.9995,the average velocity ratio is 1.700,slightly lower than the crustal average velocity ratio 1.732,Poisson’s ratio between 0.17 and 0.33;the average Poisson’s ratio 0.23.②Complex geological environment can be reflected by the average velocity ratio and the Poisson’s ratio.The result presented in this paper reflects subsurface features in Xiaolangdi Reservoir area.更多还原