[1]CAI Susu,CHEN Bin.Statistical Analysis of the Annual Variation of the Lithospheric Seismomagnetic Anomaly in Chinese Mainland[J].Journal of Seismological Research,2022,45(04):592-598.[doi:10.20015/j.cnki.ISSN1000-0666.2022.0060]
Copy
Statistical Analysis of the Annual Variation of the Lithospheric Seismomagnetic Anomaly in Chinese Mainland
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
45
Number of periods:
2022 04
Page number:
592-598
Column:
Public date:
2022-08-20
- Title:
- Statistical Analysis of the Annual Variation of the Lithospheric Seismomagnetic Anomaly in Chinese Mainland
- Keywords:
- earthquake statistics; the lithospheric magnetic field; annual variation; magnetic anomaly; gradient
- CLC:
- P318.2
- DOI:
- 10.20015/j.cnki.ISSN1000-0666.2022.0060
- Abstract:
- We select 15 eartqhuakes(MS≥6.0)and the annual variation data of the lithospheric magnetic field in Chinese mainland from 2010 to 2020,and on the scale of 0.5°×0.5° grid,we screen the magnetic components corresponding to the grid centers where the earthquake epicenter is located. The results show:①These earthquakes usually occur near the zero-variation line of the magnetic declination D,total intensity F,and vertical component Z. However,the characteristics of their gradient contour map are not significant.②Among these 15 eartqhuakes,there are 40%corresponding to the annual variation rate between -0.5’ and +0.5’ of the magnetic declination D. There are 53.33% corresponding to the total intensity F between -4 nT and +4 nT. There are 53.33% correspoding to the vertical component Z between -6 nT and +6 nT. There are 66.67% events occurring in the areas in which the gradient value of the magnetic declination D is from 0.5’/° to 1’/°. There are only 13.33% events occurring in the areas in which the gradient values of the total intensity F are from 8 nT/° to 10 nT/°. ③There are 20.00% events corresponding to the horizontal vector norm |P| from 10 nT to 12 nT. There are 26.67% events corresponding to gradient values from 8 nT/° to 10 nT/°. There are 26.67%events corresponding to the vector norm |Pf| from 12 nT to 14 nT. There are 20.00%events corresponding to the gradient of the vector norm from 8 nT/° to 12 nT/°.
- References:
-
陈斌.2011.自然正交分量方法在地震地磁监测中的应用[J].地震研究,34(4):466-469.
陈斌,袁洁浩,王粲,等.2017.流动地磁监测数据处理流程.地震研究,40(3):335-339.
丁鉴海,卢振业,余素荣.2011.地震地磁学概论[M].合肥:中国科学技术大学出版社,1-30.
董超,陈斌,袁洁浩,等.2021.2021年5月22日玛多MS7.4地震震前岩石圈磁场变化特征分析[J].地震学报,43(4):1-9.
顾春雷,张毅,顾左文,等.2012.华北地震区岩石圈磁异常场零值线与中强震震中分布关系[J].西北地震学报,34(2):174-179.
顾春雷,张毅,徐如刚,等.2010.地震前后岩石圈磁场变化特征分析[J].地球物理学进展,25(2):472-477.
顾左文,张毅,姚同起,等.2006.九江—瑞昌MS5.7地震地磁异常的观测与分析[J].地震学报,28(6):611-621.
胡敏章,李辉,刘子维,等.2015.川滇地区2010—2013年重力变化及重力网的地震监测能力[J].大地测量与地球动力学,35(4):616-620.
贾民育.1996.滇西动态重力网的分形特征及空间分辨力[J].地壳形变与地震,16(4):28-32.
贾民育,邢灿飞.1995.滇西重力变化的二维图象及其与5级(MS)以上地震的关系[J].地壳形变与地震,15(3):9-19.
贾民育,詹洁晖.2000.中国地震重力监测体系的结构与能力[J],地震学报,22(4):24-31.
蒋长胜,张浪平,韩立波,等.2011.中长期地震危险性概率预测中的统计检验方法Ⅰ:molchan图表法[J].地震,31(2):106-113.
李家发,吴一柱,安振昌,等.1992.中国地区地磁异常与地震分布关系[J].华南地震,12(1):13-18.
李琪,林云芳,曾小苹.2006.应用小波变换提取张北地震的震磁效应[J].地球物理学报,49(3):855-863.
倪喆,陈双贵,袁洁浩,等.2014a.芦山7.0级地震前后岩石圈磁场异常变化研究[J].地震研究,37(1):61-65.
倪喆,袁洁浩,王粲,等.2014b.2014年云南鲁甸6.5级,永善5.0级地震前岩石圈磁场局部异常特征分析[J].地震研究,37(4):537-541.
宋成科.2021.九寨沟MS7.0地震前地磁异常[J].地震工程学报,43(5):1037-1044.
汤筱麒,陈政宇,赵育飞,等.2019.2010—2017年甘川交界地震前震磁异常特征分析[J].华南地震,39(4):69-74.
魏荣强,于磊.2012.中国大陆地壳地震震中分布的卫星磁异常约束[J].地球物理学报,55(8):2643-2650.
徐文耀.2003.地磁学[M].北京:地震出版社,32-56.
余志伟.1987.一种新的地质曲面插值计算法——曲面样条函数方法[J].中国矿业学院学报,(4):72-79.
周建兴.2008.MATLAB从入门到精通[M].北京:人民邮电出版社,6-7.
哈奇基扬Т Я,斯基哈尔娜娅Г Г,斯基哈尔内A П,等.2008.地震震中和地磁偏角的空间分布[J].内陆地震,22(3):264-270.
Alken P,Thébaul E,Begga C D,et al.2021.International geomagnetic reference field:the thirteenth generation[J].Earth Planet & Space,73(1):1-24.
Lei Y,Jiao L,Chen H.2018.Possible correlation between the vertical component of lithospheric magnetic field and continental seismicity[J].Earth Planets & Space,70(1):1-19.
- Similar References:
Memo
-
Last Update:
2022-08-01