| 晋冀蒙交界地区中小地震视应力时空分布特征 |
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| 引用本文： | 张丽晓,张磊,闫俊岗,申炫烨.晋冀蒙交界地区中小地震视应力时空分布特征[J].地震地磁观测与研究,2019,40(4):28-36. |
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| 作者姓名： | 张丽晓 张磊 闫俊岗 申炫烨 |
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| 作者单位： | 中国河北 056001 河北省地震局邯郸中心台 |
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| 基金项目： | 2018年中国地震局三结合课题（项目编号：CEA JC/3JH 170411） |
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| 摘 要： | 选取晋冀蒙交界地区固定和临时测震台网记录的2014-2016年地震波形资料，采用近震Brune模型，结合遗传算法，反演计算298次ML ≥ 2.0中小地震视应力值，分析震源参数之间的标度关系，并按照震中分区，分析不同地区视应力时序变化特征及不同震级区间视应力空间分布特征，发现该区多处存在视应力高值现象，地震多发生于视应力高值异常及附近地区，与断裂带有一定对应关系。
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| 关 键 词： | 晋冀蒙交界地区 震源动力学参数 视应力 时空变化特征 |
Temporal and spatial distribution characteristics of apparent stress in small and medium earthquakes in the border area of Shanxi,Hebei and Inner Mongolia |
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| Zhang Lixiao,Zhang Lei,Yan Jungang,Shen Xuanye.Temporal and spatial distribution characteristics of apparent stress in small and medium earthquakes in the border area of Shanxi,Hebei and Inner Mongolia[J].Seismological and Geomagnetic Observation and Research,2019,40(4):28-36. |
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| Authors: | Zhang Lixiao Zhang Lei Yan Jungang Shen Xuanye |
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| Institution: | Handan Central Seismic Station, Hebei Earthquake Adgency, Hebei Province 056001, China |
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| Abstract: | Using the seismic waveform data of 2014-2016 recorded by fixed and temporary networks in the border area of Shanxi, Hebei and Inner Mongolia, the near-seismic Brune model is combined with genetic algorithm to calculate the apparent stress value of 298 small earthquakes with ML ≥ 2.0. The scaling relationship between source parameters is analyzed,and the apparent stress time series of different regions is analyzed according to epicenter region and the spatial distribution characteristics of visual stress in different magnitudes are analyzed. It is found that there are many phenomena of high apparent stress in this area. Earthquakes often occur in high apparent stress anomalies and nearby areas, which correspond to the fault zone. |
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| Keywords: | source dynamic parameters apparent stress temporal and spatial variation characteristics |
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