| 豫北地区视应力时空变化特征 |
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| 引用本文： | 何重阳,韩贞辉,赵大鹏.豫北地区视应力时空变化特征[J].地震地磁观测与研究,2018,40(1):59-63. |
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| 作者姓名： | 何重阳 韩贞辉 赵大鹏 |
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| 作者单位： | 中国郑州 450016 河南省地震局 |
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| 基金项目： | 河南省地震局数字地震学科技创新团队项目 |
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| 摘 要： | 利用2008年以来豫北地区49次ML 2.5以上地震资料，通过Brune模型，结合遗传算法，反演计算得到豫北地区地震视应力范围为0.029 9 MPa-0.642 MPa，平均视应力为0.174 8 MPa，分析该区视应力时空变化特征，讨论震级和能量的关系，结果表明，豫北地区目前处于应力积累阶段，应力高值集中在聊兰断裂濮阳——城段范县地区。
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| 关 键 词： | 震源参数 视应力 辐射能量 豫北地区 |
The characteristics of temporal and spatial variation of apparent stress in the north of Henan Province |
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| He Chongyang,Han Zhenhui,Zhao Dapeng.The characteristics of temporal and spatial variation of apparent stress in the north of Henan Province[J].Seismological and Geomagnetic Observation and Research,2018,40(1):59-63. |
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| Authors: | He Chongyang Han Zhenhui Zhao Dapeng |
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| Institution: | Henan Earthquake Agency, Zhengzhou 450016, China |
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| Abstract: | Using the seismic data over 49 times ML 2.5 in the north of Henan Province since 2008, the seismic visual stress range of the north of Henan area is (0.0299-0.642) MPa, and the average apparent stress is 0.174 8 MPa. The spatial and temporal variation characteristics of the apparent stress in this area are analyzed by Brune model and genetic algorithm inversion. The relationship between the magnitude and the energy is discussed. The results indicates that the north of Henan area is currently in the stage of stress accumulation, and the high value of stress is concentrated in the Fanxian area of the Xiangyang-Juancheng section of Liaolan fault. |
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| Keywords: | focal parameter apparent stress radiant energy the north of Henan region |
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