[1]杨 悦,田 鹏,白仙富.基于低成本地磁场观测台阵的滇西南及邻区地震地磁Z分量异常分析[J].华南地震,2026,46(02):10-21.[doi:10.13512/j.hndz.2026.02.02]
 YANG Yue,TIAN Peng,BAI Xianfu.Analysis of Geomagnetic Z-Component Anomalies Associated with Earthquakes in Southwestern Yunnan and Its Adjacent Regions Based on Low-Cost Geomagnetic Observation Array[J].,2026,46(02):10-21.[doi:10.13512/j.hndz.2026.02.02]
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基于低成本地磁场观测台阵的滇西南及邻区地震地磁Z分量异常分析()

华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
46
期数:
2026年02期
页码:
10-21
栏目:
地震科学研究
出版日期:
2026-03-20

文章信息/Info

Title:
Analysis of Geomagnetic Z-Component Anomalies Associated with Earthquakes in Southwestern Yunnan and Its Adjacent Regions Based on Low-Cost Geomagnetic Observation Array
文章编号:
1001-8662(2026)02-0010-12
作者:
杨 悦田 鹏白仙富
云南省地震局,昆明 650201
Author(s):
YANG YueTIAN PengBAI Xianfu
Yunnan Earthquake Agency , Kunming 650201, China
关键词:
低成本地磁场观测台阵加卸载响应比日变相关性地震预报
Keywords:
Low-cost geomagnetic observation array Load-unload response ratio Daily variation correlationEarthquake forecasting
分类号:
P315.72+1
DOI:
10.13512/j.hndz.2026.02.02
文献标志码:
A
摘要:
为提高滇西南地区的地震预报效能,天津市地震局、天津大学和云南省地震局在临沧市地区布设了低成本地磁场观测台阵,实现了区域地磁场的密集观测。研究基于临沧市低成本地磁场观测台阵的观测数据,利用加卸载响应比法和相关性分析法分析了滇西南及邻区2023年8月—2025年4月的显著地震事件发生前的地磁Z分量变化特征,结果显示:在排除仪器故障、环境干扰、太阳活动等影响因素的前提下,距离地磁场观测站点500km以内的10次4.0级以上地震中有6次地震震前2~23天Z分量加卸载响应比出现异常,超过阈值,多个站点日变幅度出现不同程度的减小,日变趋势被“压平”,且通常持续2~3天;距离地磁场观测站点20km以内的2次3.0级小震震前4~6天Z分量日变相关性降低,低于阈值,单个站点的日变趋势出现“反相”。滇西南及邻区地震地磁Z分量异常提取证明了低成本地磁场观测可为一定区域范围内地震的短临预报提供参考。
Abstract:
To improve earthquake forecasting efficiency in southwestern Yunnan, Tianjin Earthquake Agency, Tianjin University,and Yunnan Earthquake Agency have deployed a low-cost geomagnetic field observation array in Lincang City,achieving the intensive observation of regional geomagnetic field. Based on the observation data of low-cost geomagnetic field observation array in Lincang City, this paper analyzed the variation characteristics of geomagnetic Z-component before the significant earthquakes in southwest Yunnan and its adjacent areas from Au?gust 2023 to April 2025 by using the load-unload response ratio method and correlation analysis method. The re?sults show that under the premise of eliminating instrument failure,environmental interference,solar activity and other influencing factors,6 of the 10 earthquakes with M≥4.0 within 500 km from the geomagnetic field observation station have abnormal Z-component load and unload response ratio in 2-23 days before the earthquake,which ex?ceeds the threshold. The daily variation amplitude of multiple stations decreases to varying degrees,and the daily variation trend is“flattened”,and usually lasts for 2-3 days. The daily variation correlation of Z-component in 4-6 days before two M3.0 small earthquakes within 20 km from the geomagnetic field observation station is lower than the threshold value,along with trend inversions at individual stations. The extraction of Z-component geomagnetic anomalies associated with seismic activity in southwestern Yunnan and its adjacent areas proves that low-cost geo?magnetic field observation can provide reference for short-term and imminent earthquake forecasting in a certain ar?ea.

参考文献/References:

[1] Stacey F D. The seismomagnetic effect[J]. Pure Appl Geo?phys,1964,58(1):5-22.
[2] Nagata T. Application of tectonomagnetism to earthquake phenomena[J]. Tectonophysics,1972,14(3/4):263-271.
[3]祁贵仲.“膨胀”磁效应[J].地球物理学报,1978,21(01):18-33.
[4]李钧.导电率随时间变化的导电球的电磁响应问题[J].地球物理学报,1979,22(03):243-254.
[5]王晓美.地磁场相对变化观测技术研究[D].北京:中国地震局地球物理研究所,2019.
[6] Stening R,Reztsova T,Ivers D,et al. A critique of methods of determining the position of the focus of the Sq current system [J/OL]. Journal of Geophysical Research:Space Physics, 2005,110(A4).
[7] Stening R,Reztsova T,Minh L H. Day-to-day changes in the latitudes of the foci of the Sq current system and their relation to equatorial electrojet strength[J/OL]. Journal of Geophysical Research Space Physics,2005,110(A10).
[8]张雨欣.地磁日变规律以及日变值计算方法研究[D].北京:中国地质大学,2021.
[9] Takeda M. Contribution of wind,conductivity,and geomagnet?ic main field to the variation in the geomagnetic Sq field[J]. Journal of Geophysical Research:Space Physics,2013,118 (7):4516-4522.
[10]赵旭东,何宇飞,李琪,等.基于中国地磁台网数据的太阳静日期间地磁场Z分量日变化幅度分析[J].地球物理学报,2022,65(10):3728-3742.
[11]冯志生,梅卫萍,张苏平,等. FHD磁力仪Z分量分钟值日变化空间相关性的初步应用[J].华南地震,2005,25 (03):1-7.
[12]戴苗,冯志生,刘坚,等.南北地震带地磁加卸载响应比应用研究[J].地质科技情报,2017,36(04):222-227+249.
[13]李伟,龚耀,赵文舟,等.地磁加卸载响应比方法在上海及其邻区地震研究中的应用[J]. 地震,2014,34(01):125-133.
[14]邱桂兰,何跃,王登伟,等.地磁Z分量分钟值空间相关法在四川地区地震预报中的应用[J].高原地震,2014,26 (01):1-7.
[15]陈贤,黄恩贤,成万里.豫南及邻区地磁总场F日值相关性异常[J].地震地磁观测与研究,2021,42(03):115-120.
[16]孙路强,张明东,康健,等.低成本地磁场监测设备的设计与实现[J].地震工程学报,2024,46(03):665-671.
[17] Fu B,Walker R,Sandiford M. The 2008 Wenchuan earth?quake and active tectonics of Asia[J]. Journal of Asian Earth Sciences,2011,40(4):797-804.
[18]许志琴,杨经绥,李海兵,等.印度—亚洲碰撞大地构造[J].地质学报,2011,85(01):1-33.
[19]刘鸣,付碧宏,董彦芳.青藏高原东南缘滇缅地块NE向走滑断裂带的新构造活动与大地震危险性[J].地球物理学报,2015,58(11):4174-4186.
[20]白仙富,戴雨芡.滇缅活动地块构造应力场研究[J].震灾防御技术,2019,14(01):60-76.
[21] Searle M P,Noble S R,Cottle J M,et al. Tectonic evolution of the Mogok Metamorphic Belt,Burma (Myanmar) con?strained by U-Th-Pb dating of metamorphic and magmatic rocks[J]. Tectonics,2007,26(3):TC3014.
[22] Tin T Z H,Nishimura T,Hashimoto M,et al. Present-day crustal deformation and slip rate along the southern Sagaing fault in Myanmar by GNSS observation[J]. Journal of Asian Earth Sciences,2022(228):105125.
[23]计昊旻,任治坤,刘金瑞.青藏高原东南缘上地壳晚新生代构造变形综述[J].地球科学,2024,49(02):480-499.
[24]罗静博,林春生,陈浩.基于RM3100磁传感器的舰船磁场信号采集系统设计[J].传感器与微系统,2021,40(02):86-88.
[25] Sun L Q,Bai X F,Kang J,et al. Design and implementation of low-cost geomagnetic field monitoring equipment for high-density deployment[J]. Applied Geophysics,2024(21):505-512.
[26]李琪,林云芳,曾小苹.应用小波变换提取张北地震的震磁效应[J].地球物理学报,2006,49(03):855-863.
[27] Peng H,Katsumi H,Qinghua H,et al. Evaluation of ULF electromagnetic phenomena associated with the 2000 Izu Is?lands earthquake swarm by wavelet transform analysis[J]. Natural Hazards & Earth System Sciences,2011,11(3):965-970.
[28] Peng H,Katsumi H,Qinghua H,et al. Spatiotemporal char?acteristics of the geomagnetic diurnal variation anomalies prior to the 2011 Tohoku earthquake (Mw 9.0) and the possible coupling of multiple pre-earthquake phenomena[J]. Journal of Asian Earth Sciences,2016(129):13-21.
[29]张连伟,郑彦鹏,梁瑞才,等.基于小波变换的海洋地磁日变改正研究[J].海洋科学进展,2020,38(04):635-648.
[30]张亮娥,陈常俊,宫静芝,等.原平4.2级地震前山西地磁台阵数据异常特征分析[J]. 地震科学进展,2023,53 (10):469-475.
[31]冯志生,李琪,李鸿宇,等.地磁低点位移线两侧异常变化的反相位现象及其解释[J].中国地震,2009,25(02):206-213.
[32]章鑫,冯志生,袁桂平.基于地磁垂直分量反相位现象的地下畸变电流正演计算[J]. 大地测量与地球动力学, 2019,39(06):596-601.
[33]冯志生,姜楚峰,冯丽丽,等.短期重现性地磁日变化感应电流集中分布与地震关系初步研究[J]. 中国地震, 2020,36(03):502-516.
[34]李军辉,姜楚峰,吴迎燕,等.强震前地磁日变化感应电流线状集中分布孕震机理研究[J].地震,2021,41(03):219-228.
[35]孙浩越,江国焰,何宏林,等.云南景谷MS6.6地震对南汀河断裂带地震危险性的影响[J].地球物理学报,2015,58 (11):4197-4206.

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备注/Memo

备注/Memo:
收稿日期:2025-08-05
基金项目:云南省地震局青年地震科学基金资助项目(2024K07);云南省中青年学术和技术带头人后备人才项目202405AC350051)联合资助。
作者简介:杨悦(1996-),女,助理工程师,主要从事地震地质、地震地磁观测与研究工作。E-mail:yangyue2412@163.com
通信作者:白仙富(1979-),男,正高级工程师,主要从事区域防灾减灾救灾基础理论与关键技术、高原地震次生灾害防治与山地环境保育等领域研究工作。E-mail:xf_bai520@163.com
更新日期/Last Update: 2026-03-20