| 温州珊溪水库地震S波分裂研究 |
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| 引用本文： | 邹振轩,李金龙,俞铁宏,王政.温州珊溪水库地震S波分裂研究[J].地震学报,2010,32(4):423-432. |
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| 作者姓名： | 邹振轩 李金龙 俞铁宏 王政 |
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| 作者单位： | （中国杭州310013浙江省地震局） |
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| 基金项目： | 地震科学联合基金，浙江省科技厅重大科技专项 |
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| 摘 要： | 通过对温州珊溪水库地震序列开展了近一年的近场源剪切波分裂参数研究,在进行精确定位并确保所用资料满足剪切波窗要求的基础上,采用互相关系数法,借助遗传算法与人工判读相结合,测量了地震序列的快剪切波偏振方向和快慢剪切波的时间延迟.结果表明,地震序列的S波分裂现象明显,台站记录到的地震快剪切波平均偏振方向与区域最大水平主压应力方向基本一致;温州珊溪水库地区快剪切波平均偏振方向在近N-S向;S波分裂快剪切波偏振方向所表现出的离散和空间差异性,认为可能是由于局部构造影响;目前库区应力场稳定,应力调整已经结束,未来发生强余震的可能性较小.
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| 关 键 词： | Ｓ波分裂 水库地震 互相关系数法 快剪切波偏振主压应力 |
A study on S-wave splitting using waveform data from Shanxi reservoir induced earthquakes in Wenzhou of China |
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| Zou Zhenxuan,Li Jinlong,Yu Tiehong,Wang Zheng.A study on S-wave splitting using waveform data from Shanxi reservoir induced earthquakes in Wenzhou of China[J].Acta Seismologica Sinica,2010,32(4):423-432. |
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| Authors: | Zou Zhenxuan Li Jinlong Yu Tiehong Wang Zheng |
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| Affiliation: | （Earthquake Administration of Zhejiang Province, Hangzhou 310013, China） |
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| Abstract: | More than 1000 earthquakes induced by the Shanxi reservoir in Wenzhou,Zhejiang province of China,were recorded by both Zhejiang regional digital seismic network and Shanxi reservoir local digital network during the period from Feb.4 to Oct.31,2006.Using wave form data of these earthquakes we studied S-wave splitting characteristics in the reservoir region.The earthquakes were relocated and the S-wave records with travel paths within S-wave window were selected out for analysis.The fast wave polarity azimuth... |
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| Keywords: | S-wave splitting reservoir earthquake cross-correlation coefficient fast S-wave polarization principal compressive stress |
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