| 2017-06巴东MS4.3地震序列视应力变化 |
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| 引用本文： | 陈俊华,王秋良,吴海波,王杰,张卫华,赵凌云,黄颂.2017-06巴东MS4.3地震序列视应力变化[J].大地测量与地球动力学,2018,38(2):147-150. |
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| 作者姓名： | 陈俊华 王秋良 吴海波 王杰 张卫华 赵凌云 黄颂 |
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| 作者单位： | 中国地震局地震研究所(地震大地测量重点实验室);湖北省地震局; |
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| 摘 要： | 采用固定台站的宽频带数字地震波形资料，计算2017-06-16巴东MS4.3地震序列16个ML1.8以上地震的视应力、拐角频率及震源破裂半径等震源参数，并系统分析地震视应力值与各参数之间的关系。结果表明,地震序列视应力值与震级正相关，地震震源谱的高频成分不丰富，拐角频率和视应力值均远小于非水库区的构造地震，震源区地下结构较为复杂。
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| 关 键 词： | 视应力 拐角频率 震源破裂半径 三峡水库 |
Variations in Apparent Stress of MS4.3 Seismic Sequence inBadong County in June, 2017 |
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| CHEN Junhua,WANG Qiuliang,WU Haibo,WANG Jie,ZHANG Weihua,ZHAO Lingyun,HUANG Song.Variations in Apparent Stress of MS4.3 Seismic Sequence inBadong County in June, 2017[J].Journal of Geodesy and Geodynamics,2018,38(2):147-150. |
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| Authors: | CHEN Junhua WANG Qiuliang WU Haibo WANG Jie ZHANG Weihua ZHAO Lingyun HUANG Song |
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| Abstract: | This paper uses the fixed stations of wideband digital seismic waveform data, and calculates the focal shock parameters of the MS4.3 earthquake sequence in Badang county in June 16, 2017. We determine focal shock parameters,including apparent stress, corner frequency and source radius,of 16 earthquakes greater than ML1.8. The relationship between the stress and the parameters is analyzed systematically. Results show that the apparent stress value and the magnitude of earthquakes are positively correlated, the seismic source spectrum of high frequency components is not rich, corner frequency and apparent stress values are far less than the tectonic earthquake, and the underground structure is more complicated in the earthquake source area. |
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| Keywords: | apparent stress corner frequency source radius the Three Georges reservoir |
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