地磁加卸载响应比与宁强M_S5.3地震
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摘要
2018年9月12日19时6分在陕西省宁强县(32.75°N,105.69°E)发生MS5.3地震,震源深度11km。以宁强县及其周边420km为研究区域,使用地磁垂直分量Z加卸载响应比的方法,对陕—川—甘地区的汉中、周至楼、乾陵、泾阳、成都、天水和兰州七个地磁台站的资料进行处理分析,发现加卸载响应比P(Z)的高值异常与此次宁强县地震有较好的对应,为今后中短期预报提供一定的依据,也进一步推广和检验了地磁加卸载响应比在地震预报方面的应用。
On September 12,2018,an MS5.3earthquake with a focal depth of 11 km occurred in Ningqiang County,Shaanxi Province(32.75°N,105.69°E).In this work,Ningqiang County and its surrounding areas(within the radius of 420km)were taken as the study areas.Data from seven geomagnetic stations located in Hanzhong,Zhouzhilou,Qianling,Jingyang,Chengdu,Tianshui,and Lanzhou were processed and analyzed by using the loading-unloading response ratio method of the geomagnetic Z component.Results showed that high values of abnormal changes in the load-unloading response ratio P(Z)had a strong correspondence with the Ningqiang MS5.3earthquake.The results of this study can provide a basis for mid-short term earthquake prediction in the future.Meanwhile,the application of the loading-unloading response ratio method in earthquake prediction warrants further promotion and testing.
On September 12,2018,an MS5.3earthquake with a focal depth of 11 km occurred in Ningqiang County,Shaanxi Province(32.75°N,105.69°E).In this work,Ningqiang County and its surrounding areas(within the radius of 420km)were taken as the study areas.Data from seven geomagnetic stations located in Hanzhong,Zhouzhilou,Qianling,Jingyang,Chengdu,Tianshui,and Lanzhou were processed and analyzed by using the loading-unloading response ratio method of the geomagnetic Z component.Results showed that high values of abnormal changes in the load-unloading response ratio P(Z)had a strong correspondence with the Ningqiang MS5.3earthquake.The results of this study can provide a basis for mid-short term earthquake prediction in the future.Meanwhile,the application of the loading-unloading response ratio method in earthquake prediction warrants further promotion and testing.
引文
[1]尹祥础,尹灿.非线性系统的失稳前兆与地震预报——响应比理论及其应用[J].中国科学(B辑),1991(5):512-518.
[2]曾小平,续春荣,赵明,等.地球磁场对太阳风的加卸载响应与地震[J].地震地磁观测与研究,1996,17(1):49-53.
[3]宋治平,尹祥础,陈学中.加卸载响应比的时空演变特征及其对地震三要素的预测意义[J].地震学报,1996,18(2):179-186.
[4]丁鉴海,卢振业,黄雪香.地震地磁学[M].北京:地震出版社,1994:237-245.
[5]张建国,曹轶,闫俊岗,等.地磁Z分量日变幅逐日比法在河北省的应用研究[J].华北地震科学,2008,26(1):1-7.
[6]朱燕,史勇军,巴克,等.新疆地区地磁加卸载响应比方法应用研究[J].中国地震,2002,18(4):409-416.
[7]冯志生,林云芳,王建宇,等.江苏地磁加卸载响应比的异常标志体系[J].地震,2000,20(2):61-68.
[8]冯志生,王建宇,蒋延林,等.地磁垂直分量日变幅逐日比及其与地震关系的探讨[J].华南地震,2001,21(2):20-27.
[9]郑在壮.琼中台地磁加卸载响应比与地震[J].地震地磁观测与研究,2001,22(1):44-46.
[2]曾小平,续春荣,赵明,等.地球磁场对太阳风的加卸载响应与地震[J].地震地磁观测与研究,1996,17(1):49-53.
[3]宋治平,尹祥础,陈学中.加卸载响应比的时空演变特征及其对地震三要素的预测意义[J].地震学报,1996,18(2):179-186.
[4]丁鉴海,卢振业,黄雪香.地震地磁学[M].北京:地震出版社,1994:237-245.
[5]张建国,曹轶,闫俊岗,等.地磁Z分量日变幅逐日比法在河北省的应用研究[J].华北地震科学,2008,26(1):1-7.
[6]朱燕,史勇军,巴克,等.新疆地区地磁加卸载响应比方法应用研究[J].中国地震,2002,18(4):409-416.
[7]冯志生,林云芳,王建宇,等.江苏地磁加卸载响应比的异常标志体系[J].地震,2000,20(2):61-68.
[8]冯志生,王建宇,蒋延林,等.地磁垂直分量日变幅逐日比及其与地震关系的探讨[J].华南地震,2001,21(2):20-27.
[9]郑在壮.琼中台地磁加卸载响应比与地震[J].地震地磁观测与研究,2001,22(1):44-46.