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| 三峡库首区最小一维速度模型研究 | |
| 引用本文： | 赵旭,李强,蔡晋安. 三峡库首区最小一维速度模型研究[J]. 大地测量与地球动力学, 2007, 27(Z1): 1-7 |
| 作者姓名： | 赵旭 李强 蔡晋安 |
| 作者单位： | 1. 中国地震局地震研究所,武汉,430071 2. 中国地震局地震研究所,武汉,430071;地震运动监测工程研究中心,北京,100036;中国地震局地震预测研究所,北京,100036 3. 中国地震局地震预测研究所,北京,100036 |
| 摘 要： | 根据三峡台网2001～2006年记录的490个地震事件中的7 330条P波和3 524条S波到时资料,利用Kissling方法得到了三峡库区最小一维P波和S波速度模型以及台站校正值,并应用于地震的精定位.重新定位后地震走时残差均方根从原来的0.56 s下降到0.41 s,地震定位精度在经度、纬度、深度方向上有了较大提高. |
| 关 键 词： | 三峡库区 最小一维速度模型 台站校正值 地震定位 残差分析 |
| 文章编号： | 1671-5942（2007）Spec.-0001-07 |
| 修稿时间： | 2007-05-27 |
ON MINIMUM 1D VELOCITY MODEL APPLIED IN THREE GORGES RESERVOIR AREA |
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| Zhao Xu,Li Qiang,Cai Jin'an. ON MINIMUM 1D VELOCITY MODEL APPLIED IN THREE GORGES RESERVOIR AREA[J]. Journal of Geodesy and Geodynamics, 2007, 27(Z1): 1-7 | |
| Authors: | Zhao Xu Li Qiang Cai Jin'an |
| Affiliation: | 1 Institute of Seismology , CEA, Wuhan 430071;2 National Earthquake Infrastructure Service,Beijing 100036;3 Institute of Earthquake Science, CEA, Beijing 100036 |
| Abstract: | Using 7 330 P arrivals and 3 524 S arrivals from 490 events observed by the Three Gorges seismic network, the minimum 1 D velocity model including P wave model, S wave model and station corrections is obtained with the Kissling method and then the model is applied to precise earthquake location. The residual RMS of the relocated events has reduced from 0.56 s to 0.41 s, thus great improvement of the accuracy of hypocenter location has been made in the east, north, and vertical direction. The result indicates that the minimum 1D velocity model is better than other models. |
| Keywords: | the Three Gorges reservoir minimum 1D velocity model station correction earthquake location residual analysis |
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