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| 引用本文： | 廖武林,姚运生,丁志峰,张丽芬.???????P?????????????о?[J].大地测量与地球动力学,2007,27(3):80-84. |
| 作者姓名： | 廖武林 姚运生 丁志峰 张丽芬 |
| 作者单位： | 1. 中国地震局地震研究所,武汉,430071;中国地震局地壳应力研究所武汉创新基地,武汉,430071;中国地震局地球物理研究所,北京,100081 2. 中国地震局地震研究所,武汉,430071;中国地震局地壳应力研究所武汉创新基地,武汉,430071 3. 中国地震局地球物理研究所,北京,100081 |
| 基金项目： | 中国科技部社会公益研究专项(2004DIB3J131)，长江三峡工程开发总公司专项(CT-06-07-03) |
| 摘 要： | ?????????????????10????2001~2006???17 243??P????????????о????????????P???????????????:???????P???????????????????????仯????????????;??????μ????????????仯??????????????????????????;1979??????5.1???????????????????仯???λ??λ????????????????? |
| 关 键 词： | ???????? ??????? P????? ?????????? ????? |
| 文章编号： | 1671-5942（2007）03-0080-05 |
| 修稿时间： | 2006-11-30 |
TOMOGRAPHIC IMAGERY OF P WAVE VELOCITY STRUCTURE IN THREE GORGES REGION |
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| Liao Wulin,Yao Yunsheng,Ding Zhifeng,Zhang Lifen.TOMOGRAPHIC IMAGERY OF P WAVE VELOCITY STRUCTURE IN THREE GORGES REGION[J].Journal of Geodesy and Geodynamics,2007,27(3):80-84. | |
| Authors: | Liao Wulin Yao Yunsheng Ding Zhifeng Zhang Lifen |
| Institution: | 1Institute of Seismology, C EA , Wuhan 430071;2Wuhan Base of Institute of Crustal Dynamics, CEA, Wuhan 430071;3, Institute of Geophysics, CEA, Beijing 100081 |
| Abstract: | The P wave velocity structure is studied on the basis of the 17 324 P wave arrive data recorded by the Three Gorges seismic telemetry network and other ten stations around it from 2001 to 2006.The result of the tomography indicates that the lateral inhomogeneity of the P wave velocity structure in the region is significant.The distribution of the velocity in shallow layer is closely related to the geological tectonic of the surface.The change of the P wave velocity from upper crust to lower crust is consistent with the evolution history of the tectonic stress filed.The Zigui M5.1 earthquake occured in sharp gradient zones of velocity and located between the zones of low velocity and high velocity zone. |
| Keywords: | tomography the Three Gorges region P wave velocity lateral inhomogeneity stress field |
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