| 利用多个震源机制解求东大别地区平均应力场 |
| |
| 引用本文： | 刘泽民,刘东旺,李玲利,倪红玉,陈安国,郑先进.利用多个震源机制解求东大别地区平均应力场[J].地震学报,2011,33(5):605-613. |
| |
| 作者姓名： | 刘泽民 刘东旺 李玲利 倪红玉 陈安国 郑先进 |
| |
| 作者单位： | （中国合肥230031安徽省地震局） |
| |
| 基金项目： | 中国地震局重点综合性合同制定向工作任务(2010010201); 安徽省地震局重点基金课题(200904003)共同资助 |
| |
| 摘 要： | 利用地震的震源机制解资料,得到应力张量在地理坐标系下的表达式,进而可计算平均应力张量.通过求平均应力张量的本征向量,即可得到其主轴方向,并由此推断区域应力场方向.利用东大别地区219次地震的震源机制解资料,比较了不同相似程度和不同起算震级资料得到的主轴方向,认为该方法计算结果非常稳定,主轴方位角的误差小于5°,倾角的误...
|
| 关 键 词： | 应力张量 震源机制解 应力场 东大别地区 |
Determination of mean stress field in eastern Dabie region from focal mechanism solution analysis |
| |
| Liu Zemin Liu Dongwang Li Lingli Ni Hongyu Chen Anguo Zheng Xianjin.Determination of mean stress field in eastern Dabie region from focal mechanism solution analysis[J].Acta Seismologica Sinica,2011,33(5):605-613. |
| |
| Authors: | Liu Zemin Liu Dongwang Li Lingli Ni Hongyu Chen Anguo Zheng Xianjin |
| |
| Institution: | （Earthquake Administration of Anhui Province, Hefei 230031，China） |
| |
| Abstract: | By stacking focal mechanism parameters of a group of earthquakes we present an expression of mean stress tensor for a region in geographic coordinates. We calculated average stress tensor and its eigenvectors to get the directions of principal axes, which may represent the directions of regional principal stress axes. By analyzing focal mechanism parameters of 219 moderate and small earthquakes we have inferred mean principal stress directions for this region. Results of testing this method by sampling diff... |
| |
| Keywords: | stress tensor focal mechanism solution stress field eastern Dabie region |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地震学报》浏览原始摘要信息 |
| 点击此处可从《地震学报》下载免费的PDF全文 |
