2019年长宁MS6.0地震邻区分钟采样地电场分析

doi:10.12196/j.issn.1000-3274.2020.03.004

地震 ›› 2020, Vol. 40 ›› Issue (3): 41-51.doi: 10.12196/j.issn.1000-3274.2020.03.004

2019年长宁M_S6.0地震邻区分钟采样地电场分析

王玮铭¹, 谭大诚^1,2

1.中国地震局兰州地震研究所, 甘肃兰州 730000;
2.中国地震局兰州野外观测站, 甘肃兰州 730000

收稿日期:2019-12-27 出版日期:2020-07-31 发布日期:2020-07-28
通讯作者: 谭大诚,正研级高级工程师。E-mail:tandc@gsdzj.gov.cn
作者简介:王玮铭(1995-),女,四川巴中人,在读硕士研究生,主要研究地震地电场理论方法和预测技术。
基金资助:
国家重点研发项目(2018YFC1503206)、中国地震局监测司2019年和2020年任务(zx1903006和zx2004002)资助

Analysis of Anomalies in Geoelectric Field Around 2019 Changning M_S6.0 Earthquake

WANG Wei-ming¹, TAN Da-cheng^1,2

1. Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China;
2. Lanzhou National Observatory Geophysics, Lanzhou 730000, China

Received:2019-12-27 Online:2020-07-31 Published:2020-07-28

摘要/Abstract

摘要： 2019年6月17日四川宜宾市长宁县发生M_S6.0地震, 分析震中周边600 km内7个地电场台站观测分钟值数据, 获知震前2个月左右红格等6个台站地电场均存在不同方位之间、同方位长短极距之间的相关系数持续降低, 6月17日这些相关系数基本降至最低, 反映出这6个场地的地电场在此次地震前后发生了非均匀变化; 同时, 这6个台站的地电场优势方位角出现了约45°或90°跃变, 并伴有显著发散或收窄现象。分析表明长宁M_S6.0地震前后, 这6个场地的多种地电场异常现象具有局部场地效应、时间准同步性。

关键词: 2019年长宁M_S6.0地震, 地电场, 异常分析, 非均匀性

Abstract: On June 17, 2019, there occurred a M_S6.0 earthquake in Changning County, Yibin City, Sichuan Province. The minute values of seven geoelectrical stations within 600 km of the epicenter was analyzed. The geoelectric field correlation coefficients between different directions and between the long and short pole distance continuously reduced at six stations about two months before the earthquake, and these correlation coefficients declined to a minimum on June 17, reflecting the non-uniform variation in the geoelectric field at these six sites before or after the earthquake. Simultaneously, the dominant azimuth angle of the geoelectric field jumped approximately 45° or 90° at these six stations, and also significantly diverged or shrunk. The analysis shows that around the Changning M_S6.0 earthquake, the anomalies at these six geoelectric field stations exhibited local effects and quasi-synchronous characteristics.

Key words: 2019 Changning M_S6.0, Geoelectric field, Anomaly analysis, Non-uniformity

中图分类号:

P315.7

王玮铭, 谭大诚. 2019年长宁M_S6.0地震邻区分钟采样地电场分析[J]. 地震, 2020, 40(3): 41-51.

WANG Wei-ming, TAN Da-cheng. Analysis of Anomalies in Geoelectric Field Around 2019 Changning M_S6.0 Earthquake[J]. EARTHQUAKE, 2020, 40(3): 41-51.

参考文献

[1] Varotsos P, Alexopoulous K. Physical properties of the electric field of the earth preceding earthquake. Ⅱ. Determination of epicenter and magnitude, Tectonophysics, 1984, 110: 99-125.
[2] 钱复业, 赵玉林. 地电场短临预报方法研究[J]. 地震, 2005, 25(2): 33-40.
QIAN Fu-ye, ZHAO Yu-lin. Study on geoelectric field method for short-term and impending earthquake prediction[J]. Earthquake, 2005, 25(2): 33-40 (in Chinese).
[3] 毛桐恩, 席继楼, 王燕琼, 等. 地震过程中的大地电场变化特征[J]. 地球物理学报, 1999, 42(4): 520-528.
MAO Tong-en, XI Ji-lou, WANG Yan-qiong, et al. The variation characteristics of the telluric field in the process of earthquake[J]. Chinese Journal of Geophysics, 1999, 42(4): 520-528 (in Chinese).
[4] 黄清华. 一种评估地震前兆可信度的方法[J]. 地球物理学报, 2005, 48(3): 637-642.
HUANG Qing-hua. A method of evaluating reliability of earthquake precursors[J]. Chinese Journal of Geophysics, 2005, 48(3): 637-642 (in Chinese).
[5] 黄清华, 刘涛. 新岛台地电场的潮汐响应与地震[J]. 地球物理学报, 2006, 49(6): 1745-1754.
HUANG Qing-hua, LIU Tao. Earthquake and tide response of geoelectric potential field at the Niijima station[J]. Chinese Journal of Geophysics, 2006, 49(6): 1745-1754 (in Chinese).
[6] 张学民, 翟彦忠, 郭学增, 等. 远震前的地电场潮汐波异常[J]. 地震学报, 2007, 29(1): 48-58.
ZHANG Xue-min, ZHAI Yan-zhong, GUO Xue-zeng, et al. Tidal wave anomalies of geoelectrical field before remote earthquakes[J]. Acta Seismologica Sinica, 2007, 29(1): 48-58 (in Chinese).
[7] 谭大诚, 赵家骝, 席继楼, 等. 潮汐地电场特征及机理研究[J]. 地球物理学报, 2010, 53(3): 544-555.
TAN Da-cheng, ZHAO Jia-liu, XI Ji-lou, et al. A study on feature and mechanism of the tidal geoelectrical field[J]. Chinese Journal of Geophysics, 2010, 53(3): 544-555 (in Chinese).
[8] 谭大诚, 赵家骝, 刘小凤, 等. 自然电场的区域性变化特征[J]. 地球物理学报, 2014, 57(5): 1588-1598.
TAN Da-cheng, ZHAO Jia-liu, LIU Xiao-feng, et al. Features of regional variations of the spontaneous field[J]. Chinese Journal of Geophysics, 2014, 57(5): 1588-1598 (in Chinese).
[9] 谭大诚, 辛建村, 王建军, 等. 大地电场岩体裂隙模型的应用基础与震例解析[J]. 地球物理学报, 2019, 62(2): 558-571.
TAN Da-cheng, XIN Jian-cun, WANG Jian-jun, et al. Application foundation and earthquake case analysis of the telluric field rock crack model[J]. Chinese Journal of Geophysics, 2019, 62(2): 558-571.
[10] 范莹莹, 杜学彬, Jacques Z, 等. 汶川M_S8.0大震前的电磁现象[J]. 地球物理学报, 2010, 53(12): 2887-2898.
FAN Ying-ying, DU Xue-bin, Jacques Z, et al. The electromagnetic phenomena before the M_S8.0 Wenchuan earthquake[J]. Chinese Journal of Geophysics, 2010, 53(12): 2887-2898 (in Chinese).
[11] 谭大诚, 席继楼, 张慧, 等. 地电场水文地质因素及裂隙水主体渗流方向逐日计算[J]. 地震学报, 2013, 35(1): 36-49.
TAN Da-cheng, XI Ji-lou, ZHANG Hui, et al. Hydrogeologic factors of geoelectric field and diurnal computation of preferred orientation of crack water seepage[J]. Acta Seismologica Sinica, 2013, 35(1): 36-49 (in Chinese).
[12] 孙正江, 王华俊. 高等学校教学用书地电概论[M]. 北京: 地震出版社, 1984.
SUN Zheng-jiang, WANG Hua-jun. Teaching Books in Colleges and Universities Introduction to Geoelectricity [M]. Beijing: Earthquake Publishing House, 1984 (in Chinese).
[13] 辛建村, 谭大诚. 地电场多测向日变波形相位关联特征[J]. 地震学报, 2017, 39(4): 604-614.
XIN Jian-cun, TAN Da-cheng. Phase correlation features of geoelectric field diurnal waveforms in multi-orientation[J]. Acta Seismologica Sinica, 2017, 39(4): 604-614 (in Chinese).
[14] 谭大诚, 赵家骝, 席继楼, 等. 青藏高原中强地震前的地电场变异及构成解析[J]. 地球物理学报, 2012, 55(3): 875-885.
TAN Da-cheng, ZHAO Jia-liu, XI Ji-lou, et al. The variation of waveform and analysis of composition for the geoelectrical field before moderate or strong earthquakes in Qinghai-Tibetan plateau redions[J]. Chinese Journal of Geophysics, 2012, 55(3): 878-885 (in Chinese).
[15] 辛建村, 谭大诚. 地电场多测向日变波形相位关联特征[J]. 地震学报, 2017, 39(4): 604-614.
XIN Jian-cun, TAN Da-cheng. Phase correlation features of geoelectric field diurnal waveforms in multi-orientation. Acta Seismologica Sinica, 2017, 39(4): 604-614 (in Chinese).

2019年长宁M_S6.0地震邻区分钟采样地电场分析

Analysis of Anomalies in Geoelectric Field Around 2019 Changning M_S6.0 Earthquake

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 11

编辑推荐

Metrics

本文评价

[1]	张波, 谭大诚, 罗娜, 尹小兵, 吴鹤帅. 高压直流输电对大柏舍台地电场观测干扰的分析[J]. 地震, 2020, 40(1): 140-150.
[2]	王喜龙, 王海燕, 付聪, 王松阳, 杨振鹏. 锦州沈家台水氡高值波动异常识别[J]. 地震, 2019, 39(4): 158-171.
[3]	李飞, 杜学彬, 鲍海英, 董淼. 新沂台与马陵山台地电暴变化特征对比分析与讨论[J]. 地震, 2018, 38(4): 84-93.
[4]	席继楼, 关华平, 刘超, 庄楠, 武建华, 颜晓晔. 几次大地震前后地电场中长期变化分析与研究[J]. 地震, 2018, 38(2): 117-126.
[5]	于晨, 卢军, 解滔, 岳冲, 王淑艳. 基于概率密度分布的地电场地震前兆异常提取方法[J]. 地震, 2017, 37(4): 22-36.
[6]	辛建村, 谭大诚, 赵菲, 张远富, 李旭升. 典型干扰对岩体裂隙优势方位计算结果的影响研究[J]. 地震, 2017, 37(4): 112-122.
[7]	胡小静,毕青,付虹. 大地电场观测中干扰变化的特征分析[J]. 地震, 2017, 37(2): 157-166.
[8]	席继楼, 关华平, 刘超, 庄楠, 杨晓明, 张治国, 次卓嘎, 格桑卓玛, 马爱明. 2015年尼泊尔8.1级地震前后拉萨地电场观测数据变化分析^*[J]. 地震, 2016, 36(2): 1-13.
[9]	席继楼, 赵家骝, 关歆莹, 谭大诚, 庄楠, 刘超, 李国佑, 王莉森, 李文新. 地电场观测中的工频干扰抑制方法研究[J]. 地震, 2015, 35(4): 53-63.
[10]	安张辉, 杜学彬, 范莹莹, 刘君, 谭大诚, 崔腾发, 陈军营, 王建军. 2013年芦山M_S7.0地震前地电场变化特征研究[J]. 地震, 2015, 35(1): 91-99.
[11]	范莹莹, 杜学彬, 谭大诚, 安张辉, 刘君, 王建军. 芦山M_S7.0与岷县漳县M_S6.6地震前甘肃地区部分台站地电场变化[J]. 地震, 2015, 35(1): 100-111.

2019年长宁MS6.0地震邻区分钟采样地电场分析

Analysis of Anomalies in Geoelectric Field Around 2019 Changning MS6.0 Earthquake

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 11

编辑推荐

Metrics

本文评价

2019年长宁M_S6.0地震邻区分钟采样地电场分析

Analysis of Anomalies in Geoelectric Field Around 2019 Changning M_S6.0 Earthquake