| 三峡水库二期蓄水以来巴东地区波速比特征分析 |
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| 引用本文： | 陈俊华,王墩,李垠,薛军蓉. 三峡水库二期蓄水以来巴东地区波速比特征分析[J]. 大地测量与地球动力学, 2007, 27(Z1): 28-31 |
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| 作者姓名： | 陈俊华 王墩 李垠 薛军蓉 |
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| 作者单位： | 中国地震局地震研究所，武汉 430071 |
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| 摘 要： | 研究了三峡水库二期蓄水后湖北省巴东地区微震波速比值的变化特征。研究表明,震前波速比降低，震后波速比回升,波速比值变化反映出地震前后震源区介质受到由水引起的微裂隙的破坏和溶蚀作用。
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| 关 键 词： | 三峡水库二期蓄水 巴东地区 波速比 变化特征 短临预报 |
ON CHARACTERISTICS OF WAVE VELOCITY RATIO IN BADONG AREASINCE SECOND IMPOUNDMENT OF THREE GORGES RESERVOIR |
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| Chen Junhua,Wang Dun,Li Yin,Xue Junrong. ON CHARACTERISTICS OF WAVE VELOCITY RATIO IN BADONG AREASINCE SECOND IMPOUNDMENT OF THREE GORGES RESERVOIR[J]. Journal of Geodesy and Geodynamics, 2007, 27(Z1): 28-31 |
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| Authors: | Chen Junhua Wang Dun Li Yin Xue Junrong |
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| Affiliation: | Institute of Seismology, CEA, Wuhan 430071 |
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| Abstract: | The characteristics of wave velocity ratio of microearthquakes in Badong area since the second impoundment of Three Gorges reservoir are studied. The results show that the wave velocity ratio decreases before an earthquake and increases after the earthquake.The variations of wave velocity ratio reflect the microcrack failure and corrosion of the medium in the focal region caused by water before and after an earthquake. |
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| Keywords: | second impoundment of Three Gorges Reservoir Badong area wave velocity ratio(WVR) characteristics of veriation imminent prediction |
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