地磁低点时间与经度的相关性分析
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摘要
地磁低点时间在空间分布上的主要特征是随着经度变化而变化。为了求出这种变化关系的解析式,首先使用国家地磁台网的数据计算甘肃省近三年13个地磁台站的低点时间序列和低点时间的期望,并绘制了低点时间序列的频次分布图和概率密度曲线;然后对低点时间与台站经度的关系做线性回归,并指出这个线性回归方程应无限趋近于"格林尼治时间-经度"关系式。文章第一次提出台站经度与地磁Z分量低点时间的关系式,并提出它的趋近方程。各台站低点时间的期望就是地磁低点时间的正常背景值,它是判定地磁低点时间异常与否的参考标准。本文的工作完善和发展了丁鉴海先生的地磁低点位移法。
The main characteristic of the spatial distribution of geomagnetic low-point time is that it changes with longitude. To solve the analytical formula of the relationship, we first calculated the low-point time sequences and the expected values of the low-point times of 13 geomagnetic stations in Gansu Province. Using nearly three years of data from the national geomagnetic network, the frequency distribution diagram and the normal density curve of the low-point time series were plotted. We then made a linear regression for the relationship between the low-point time of the Z component and longitude of the station, and indicated that the linear regression equation should be infinitely close to the "Greenwich time-longitude" equation. In this paper, the relational expression between the low-point time of the Z component and longitude of the station is first proposed, and the approximation equation of the relational expression is described. The expected value of the low-point time of each station is the normal background value of the geomagnetic low-point time, which is a reference standard to determine whether the geomagnetic low-point time is abnormal. The significance of the above work is to perfect the geomagnetic low-point displacement method proposed by Ding Jianhai.
The main characteristic of the spatial distribution of geomagnetic low-point time is that it changes with longitude. To solve the analytical formula of the relationship, we first calculated the low-point time sequences and the expected values of the low-point times of 13 geomagnetic stations in Gansu Province. Using nearly three years of data from the national geomagnetic network, the frequency distribution diagram and the normal density curve of the low-point time series were plotted. We then made a linear regression for the relationship between the low-point time of the Z component and longitude of the station, and indicated that the linear regression equation should be infinitely close to the "Greenwich time-longitude" equation. In this paper, the relational expression between the low-point time of the Z component and longitude of the station is first proposed, and the approximation equation of the relational expression is described. The expected value of the low-point time of each station is the normal background value of the geomagnetic low-point time, which is a reference standard to determine whether the geomagnetic low-point time is abnormal. The significance of the above work is to perfect the geomagnetic low-point displacement method proposed by Ding Jianhai.
引文
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[3] 丁鉴海,余素荣,王亚丽.地磁“低点位移"现象与强震预测研究[J].电波科学学报,2008,23(6):1011-1017.DING Jianhai,YU Surong,WANG Yali.Geomagnetic Low-Point Displacement Phenomena Arid Strong Earthquake Prediction Research[J].Chinese Journal of Radio Science,2008,23(6):1011-1017.
[4] 丁鉴海,卢振业,黄雪香.地震地磁学[M].北京:地震出版社,1994.DING Jianhai,LU Zhenye,HUANG Xuexiang.Seismogeomagnetism.[M].Beijing:Seismological Press,1994.
[5] 丁鉴海,黄雪香,邢如英,等.地磁“低点位移”现象及其与地震的关系[J].地震学报,1998,10(4):406-414.DING Jianhai,HUANG Xuexiang,XING Ruying,et al.Geomagnetic Low-Point Displacement Phenomenon and Their Relation to Earthquakes[J].Acta Seismologica Sinica,1998,10(4):406-414.
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[9] 陈化然,杜爱民,王亚丽.地磁低点位移与地磁场等效电流体系关系的初步研究[J].地震学报.2009.31(1):59-67.Chen Huaran,Du Aimin,Wang Yali.A Preliminary Study on the Relation Between the Geomagnetic “Lowest Shift” Phenomenon and the Equivalent Current System[J].Acta Seismologica Sinica.2009.31(1):59-67.
[10] 黄雪香,余素荣.地磁低点位移异常类型特征与地震活动[J].地震.2000.20(4):39-44.HUANG Xuexiang,YU Surong.Type Characteristics of Geomagnetic Low-point Displacement Anomaly and their Relation to Seismicity[J].EARTHQUAKE.2000.20(4):39- 44.
[11] DUMA G,RUZHIN Y.Diurnal Changes of Earthquake Activity and Geomagnetic Sq-variations[C].Natural Hazards and Earth System Sciences2003,3:171-177.
[12] MARKUS BATH.Spectral Analysis in Geophysics[M].New York Elsevier Scientific Publishing Company,1974,285-287.
[13] 王辉,许滔滔,罗景程等.基于地磁台网数据的长周期大地电磁数据远参考处理[J].地球物理学进展,2018.33(6):2270-2277.WANGHui,XU Taotao,LUO Jingcheng,et al.Remote Reference Processing of Long Period Magnetotelluric Data Based on Geomagnetic Data[J].Progress in Geophysics,2018.33(6):2270-2277.
[14] 王辉,姚郁松,许滔滔.利用地磁台站数据和站间传递函数估算长周期大地电磁测深的本地阻抗[J].地球物理学进展,2019.34(1):200-207.WANGHui,YAO Yusong,XU Taotao,et al.Estimation of Local Impedance for Long Period Magnetotelluric Data using Geomagnetic Data and Interstation Transfer Functions[J].Progress in Geophysics,2019.34(1):200-207.
[15] 翁爱华,李世文,李建平等.深部电磁感应研究进展[J].地球物理学进展,2017.32(4):1679-1692.WENGAihua,LI Shiwen,LI Jianping,et al.Progress in Deep Electromagnetie Induction Studies[J].Progress in Geophysics,2017.32(4):1679-1692.
[16] 陈果,杜爱民,张莹等.利用卡尔曼滤波技术提取地磁规则日变化[J].地球物理学进展,2017.32(5):1880-1885.CHEN Guo,DU Aimin,ZHANG Ying,et al.Kalman Filter Technique for Defining Solar Regular Geomagnetic Variations[J].Progress in Geophysics,2017.32(5):1880-1885.
[17] 张泉,李永飞,田靖,等.复杂条件下大地电磁资料二维反演及初始模型构建研究[J].地球物理学进展,2018.33(4):1645-1651.ZHANG Quan,LI Yongfei,TIAN Jing,et al.Two-Dimensional Inversion and Initial Model Construction of Magnetotelluric Data in Complex Conditions are Studied[J].Progress in Geophysics,2018.33(4) :1645-1651.
[18] 陈幸莲,徐行,柴剑勇等.广东阳江深井地磁观测系统研究与数据分析[J].华南地震,2017.37(3):81-89.CHENXinglian,XU Xing,CHAI Jianyong,et al.Research and Data Analysis of the Deep Borehole Geomagnetic Observation System in Yangjiang City[J].South China Journal of Seismology,2017.37(3):81-89.
[19] 艾萨·伊斯马伊力.喀什台地磁异常与地震[J].华南地震,2017.37(4):54-60.Aisa·Yisimayili.Geomagnetic Anomalies Before Aktu Earthquake with MS6.7 on November 11th,2016[J].South China Journal of Seismology,2017.37(4):54-60.
[20] 王静波,韩英,杨宏静.地磁加卸载响应比在甘肃及周边地区的应用[J].华南地震,2017.37(s1):99-104.WANG jingbo,HAN Ying,YANG Hongjing.The Application of Geomagnetic Load-unloading Response Ratio in Gansu Province and Its Surrounding Areas[J].South China Journal of Seismology,2017.37(s1):99-104.
[21] 郑永通,张年明,刘其寿.龙岩台GM4与FHD干扰因素对比分析[J].华南地震,2017.37(增刊1):66-74.ZHENG Yongtong,ZHANG Nianming,LIU Qishou.Comparative Analysis of Interference Factors of GM4 and FHD in Longyan Seismic Station[J].South China Journal of Seismology,2017.37(Supp1):66-74.
[2] 丁鉴海,车时,余素荣,等.地磁日变地震预报方法及其震例研究[M].北京:地震出版社,2009.DING Jianhai,CHE Shi,YU Surong,et al.The Earthquake Prediction Method of Geomagnetic Diurnal Variation and Its Earthquake Cases Study[M].Beijing:Seismological Press,2009.
[3] 丁鉴海,余素荣,王亚丽.地磁“低点位移"现象与强震预测研究[J].电波科学学报,2008,23(6):1011-1017.DING Jianhai,YU Surong,WANG Yali.Geomagnetic Low-Point Displacement Phenomena Arid Strong Earthquake Prediction Research[J].Chinese Journal of Radio Science,2008,23(6):1011-1017.
[4] 丁鉴海,卢振业,黄雪香.地震地磁学[M].北京:地震出版社,1994.DING Jianhai,LU Zhenye,HUANG Xuexiang.Seismogeomagnetism.[M].Beijing:Seismological Press,1994.
[5] 丁鉴海,黄雪香,邢如英,等.地磁“低点位移”现象及其与地震的关系[J].地震学报,1998,10(4):406-414.DING Jianhai,HUANG Xuexiang,XING Ruying,et al.Geomagnetic Low-Point Displacement Phenomenon and Their Relation to Earthquakes[J].Acta Seismologica Sinica,1998,10(4):406-414.
[6] S.Chapman,J.Bartels.1940.Geomagnetism,Oxford.
[7] 杨诺夫斯基,陈志强等译.地磁学[M].地质出版社,1959.YANG NOVSKY.Chen Zhiqiang et al,Translated.Geomagnetics[M].Beijing:Geological Publishing House,1959.
[8] 刘晓灿,陈化然,王亚丽等.地震地磁低点位移现象与空间环境关系的初步研究[J].地震地磁观测与研究.2009.30(3):7-10.LIU Xiaocan,CHEN Huaran,WANG Yali,et al.Research on the Relations between the Geomagnetic “Lowest Shift” Phenomenon and the Spatial Environments[J].Seismological and Geomagnetic Observation and Research.2009.30(3):7-10.
[9] 陈化然,杜爱民,王亚丽.地磁低点位移与地磁场等效电流体系关系的初步研究[J].地震学报.2009.31(1):59-67.Chen Huaran,Du Aimin,Wang Yali.A Preliminary Study on the Relation Between the Geomagnetic “Lowest Shift” Phenomenon and the Equivalent Current System[J].Acta Seismologica Sinica.2009.31(1):59-67.
[10] 黄雪香,余素荣.地磁低点位移异常类型特征与地震活动[J].地震.2000.20(4):39-44.HUANG Xuexiang,YU Surong.Type Characteristics of Geomagnetic Low-point Displacement Anomaly and their Relation to Seismicity[J].EARTHQUAKE.2000.20(4):39- 44.
[11] DUMA G,RUZHIN Y.Diurnal Changes of Earthquake Activity and Geomagnetic Sq-variations[C].Natural Hazards and Earth System Sciences2003,3:171-177.
[12] MARKUS BATH.Spectral Analysis in Geophysics[M].New York Elsevier Scientific Publishing Company,1974,285-287.
[13] 王辉,许滔滔,罗景程等.基于地磁台网数据的长周期大地电磁数据远参考处理[J].地球物理学进展,2018.33(6):2270-2277.WANGHui,XU Taotao,LUO Jingcheng,et al.Remote Reference Processing of Long Period Magnetotelluric Data Based on Geomagnetic Data[J].Progress in Geophysics,2018.33(6):2270-2277.
[14] 王辉,姚郁松,许滔滔.利用地磁台站数据和站间传递函数估算长周期大地电磁测深的本地阻抗[J].地球物理学进展,2019.34(1):200-207.WANGHui,YAO Yusong,XU Taotao,et al.Estimation of Local Impedance for Long Period Magnetotelluric Data using Geomagnetic Data and Interstation Transfer Functions[J].Progress in Geophysics,2019.34(1):200-207.
[15] 翁爱华,李世文,李建平等.深部电磁感应研究进展[J].地球物理学进展,2017.32(4):1679-1692.WENGAihua,LI Shiwen,LI Jianping,et al.Progress in Deep Electromagnetie Induction Studies[J].Progress in Geophysics,2017.32(4):1679-1692.
[16] 陈果,杜爱民,张莹等.利用卡尔曼滤波技术提取地磁规则日变化[J].地球物理学进展,2017.32(5):1880-1885.CHEN Guo,DU Aimin,ZHANG Ying,et al.Kalman Filter Technique for Defining Solar Regular Geomagnetic Variations[J].Progress in Geophysics,2017.32(5):1880-1885.
[17] 张泉,李永飞,田靖,等.复杂条件下大地电磁资料二维反演及初始模型构建研究[J].地球物理学进展,2018.33(4):1645-1651.ZHANG Quan,LI Yongfei,TIAN Jing,et al.Two-Dimensional Inversion and Initial Model Construction of Magnetotelluric Data in Complex Conditions are Studied[J].Progress in Geophysics,2018.33(4) :1645-1651.
[18] 陈幸莲,徐行,柴剑勇等.广东阳江深井地磁观测系统研究与数据分析[J].华南地震,2017.37(3):81-89.CHENXinglian,XU Xing,CHAI Jianyong,et al.Research and Data Analysis of the Deep Borehole Geomagnetic Observation System in Yangjiang City[J].South China Journal of Seismology,2017.37(3):81-89.
[19] 艾萨·伊斯马伊力.喀什台地磁异常与地震[J].华南地震,2017.37(4):54-60.Aisa·Yisimayili.Geomagnetic Anomalies Before Aktu Earthquake with MS6.7 on November 11th,2016[J].South China Journal of Seismology,2017.37(4):54-60.
[20] 王静波,韩英,杨宏静.地磁加卸载响应比在甘肃及周边地区的应用[J].华南地震,2017.37(s1):99-104.WANG jingbo,HAN Ying,YANG Hongjing.The Application of Geomagnetic Load-unloading Response Ratio in Gansu Province and Its Surrounding Areas[J].South China Journal of Seismology,2017.37(s1):99-104.
[21] 郑永通,张年明,刘其寿.龙岩台GM4与FHD干扰因素对比分析[J].华南地震,2017.37(增刊1):66-74.ZHENG Yongtong,ZHANG Nianming,LIU Qishou.Comparative Analysis of Interference Factors of GM4 and FHD in Longyan Seismic Station[J].South China Journal of Seismology,2017.37(Supp1):66-74.