黑龙江林口M_B6.4深震前通河地磁谐波振幅比异常特征
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摘要
采用黑龙江通河地磁台分钟值数据进行谐波振幅比计算,结果显示:2016-01-02黑龙江林口M_B6.4深源地震前,距离震中150 km的通河地磁台谐波振幅比出现明显异常,异常特征有:1)地磁谐波振幅比Y_(ZHx)和Y_(ZHy)主要表现为"下降-转折-恢复"的形态;2)谐波振幅比异常变化中的转折上升形态具有由深(较长周期)至浅(较短周期)的迁移特征;3)2014-03～2016-01Y_(ZHy)在不同深度出现介质电性不同步异常;4)Y_(ZHy)异常幅度大于Y_(ZHx)异常幅度。异常产生的原因可能是由于西太平洋板块持续以高速度、小倾角向欧亚大陆下方俯冲,林口地震前孕震体应力变化导致地磁台站附近局部介质电性产生变化。
Applying the method of harmonic wave amplitude ratio, we calculate the minute-value data derived from Heilongjiang Tonghe geomagnetic station. The results show that before the January 2, 2016 M_B6.4 deepsource earthquake in Linkou of Heilongjiang province, the harmonic wave amplitude ratio of Tonghe geomagnetic station, about 150 km from the epicenter, presents obvious abnormality. There are four anomaly characteristics:(1) the abnormal change of the harmonic wave amplitude ratio Y_(ZHx ) in the north-south and Y_(ZHy) in the east-west show the characteristics the form of "down-turning-recovery";(2) The transition features have the characteristics of migration from deep(long period) to shallow(shorter period) in the abnormal change of harmonic wave amplitude ratio;(3) from March 2014 to January 2016, dielectric properties of the harmonic wave amplitude ratio Y_(ZHy ) data in Tonghe geomagnetic station have a different abnormality at different depths;(4) abnormal amplitude of the harmonic wave amplitude ratio Y_(ZHy ) in Tonghe geomagnetic station is greater than Y_(ZHx.) The reason for abnormal characteristics is that the western Pacific plate dived under the Eurasian continent at a high speed with a small dip before the M_B6.4 deep source earthquake in Linkou. The stress change of the seismogenic body led to electrical properties of the local medium changing near the Tonghe geomagnetic station.
Applying the method of harmonic wave amplitude ratio, we calculate the minute-value data derived from Heilongjiang Tonghe geomagnetic station. The results show that before the January 2, 2016 M_B6.4 deepsource earthquake in Linkou of Heilongjiang province, the harmonic wave amplitude ratio of Tonghe geomagnetic station, about 150 km from the epicenter, presents obvious abnormality. There are four anomaly characteristics:(1) the abnormal change of the harmonic wave amplitude ratio Y_(ZHx ) in the north-south and Y_(ZHy) in the east-west show the characteristics the form of "down-turning-recovery";(2) The transition features have the characteristics of migration from deep(long period) to shallow(shorter period) in the abnormal change of harmonic wave amplitude ratio;(3) from March 2014 to January 2016, dielectric properties of the harmonic wave amplitude ratio Y_(ZHy ) data in Tonghe geomagnetic station have a different abnormality at different depths;(4) abnormal amplitude of the harmonic wave amplitude ratio Y_(ZHy ) in Tonghe geomagnetic station is greater than Y_(ZHx.) The reason for abnormal characteristics is that the western Pacific plate dived under the Eurasian continent at a high speed with a small dip before the M_B6.4 deep source earthquake in Linkou. The stress change of the seismogenic body led to electrical properties of the local medium changing near the Tonghe geomagnetic station.
引文
[1] 赵素涛,金振民,干微.中国东北深源地震机理[J].地学前缘,2012,19(5):300-311(Zhao Sutao,Jin Zhenmin,Gan Wei.A Preliminary Study of the Focal Mechanism of the Deep-Focus Earthquakes in Northeast China[J].Earth Science Frontiers.2012,19(5):300-311)
[2] 刘雷,杜建国,易丽.亚稳态橄榄石相变与深源地震研究[J].地震,2007,27(3):41-50(Liu Lei,Du Jianguo,Yi Li. An Advance in Metastable Olivine Phase Transformation and Deep-Focus Seismicity [J].Earthquake,2007,27(3):41-50)
[3] 宁亚灵,王利花,程紫燕,等.临汾台地电阻率趋势下降有限元数值分析[J].地震工程学报,2017,39(增1):121-126(Ning Yaling,Wang Lihua,Cheng Ziyan, et al. The Trend Variations of Geo-Resistivity at Linfen Seismic Station Using Finit Element Method[J]. China Earthquake Engineering Journal, 2017,39(S1):121-126)
[4] 冯志生,梅卫萍,张秀霞,等.中强震前地磁谐波振幅比的趋势性变化特征初步研究[J].西北地震学报,2004,26(1):50-56(Feng Zhisheng,Mei Weiping,Zhang Xiuxia et al.Preliminary Study on the Characteristics of Long and Medium Term Variation for the Amplitude Ratio of Geomagnetic Humorous Wave before Moderate Strong Earthquakes[J].Northwestern Seismological Journal, 2004,26(1):50-56)
[5] 倪晓寅,陈莹.强震前短周期地磁谐波比变化特征[J].地震研究,2017,40(3):431-436(Ni Xiaoyin,Chen Ying.The Variation Characteristics of Short-Period Geomagnetic Harmonic Wave Amplitude Ratio before Strong Earthquakes[J].Journal of Seismological Research, 2017,40(3):431-436)
[6] 戴勇,高立新,张立丰.甘-青地区地磁谐波振幅比分析[J].地震工程学报,2016,38(1):12-18(Dai Yong,Gao Lixin,Zhang Lifeng. Study on the Amplitude Ratio of Geomagnetic Harmonic Wave in Gansu-Qinghai Region[J].China Earthquake Engineering Journal, 2016,38(1):12-18)
[7] 戴苗,刘坚,蒋玲霞,等.巴东地震前介质电性变化特征[J].大地测量与地球动力学,2013,34(3):48-51(Dai Miao,Liu jian,Jiang Lingxia,et al.Variation Characteristics of Earth Electrical Property before Badong Earthquake and Formation Mechanism[J].Journal of Geodesy and Geodynamics,2013,34(3):48-51)
[8] Lei J S,Xie F R,Fan Q C.Seismic Imaging of the Deep Structure under the Chinese Volcanoes:An Overview[J].Physics of the Earth & Planetary Interiors,2013,224(4):104-123
[9] 北京大学,中国科学技术大学地球物理教研室.地磁学教程[M].北京:地震出版社,1986(Peking University, School of Geophysics, China University of Science and Technology. Geomagnetism Course[M]. Beijing:Seismological Press, 1986
[10] 冯志生,居海华,李鸿宇,等.地磁谐波振幅比异常特征进一步研究及定性解释[J].华南地震,2009,29(1):17-23(Feng Zhisheng,Ju Haihua,Li Hongyu,et al. Further Study on Characteristics of Long-Term and Medium-Term Variations of Geomagnetic Harmonic Wave Amplitude Ratios before Moderate or Strong Earthquakes[J].South China Journal of Selsmology, 2009,29(1):17-23)
[11] 龚绍京,陈化然. 水平场转换函数空间分布特征的数值模拟[J].地震学报, 2001, 23(6): 637-644(Gong Shaojing,Chen Huaran.Numerical Modeling for the Spatial Distribution Characteristics of Horizontal Field Transfer Function[J].Acta Seismologica Sinica, 2001, 23(6): 637-644)
[12] 杜学彬,李宁,叶青,等.强地震附近视电阻率各向异性变化的原因[J].地球物理学报,2007,50(6):1 802-1 810(Du Xuebin,Li Ning,Ye Qing.et al. A Possible Reason for the Anisotropic Changes in Apparent Resistivity near the Focal Region of Strong Earthquake[J].Chinese Journal of Geophysics,2007,50(6):1 802-1 810)
[13] 汤吉,赵国泽,王继军,等.基于地下电性结构探讨中国东北活动火山形成机制[J].岩石学报,2006,22(6):1 503-1 510(Tang Ji,Zhao Guoze,Wang Jijun,et al. Study of the Formation Mechanism for Volcanism in Northeast China Based on Deep Electric Structure[J].Acta Petrologica Sinica,2006,22(6):1 503-1 510)
[14] 刘长生,苗庆杰,赵谊,等.黑龙江地区上地幔各向异性研究[J].大地测量与地球动力学,2016,36(7):620-624(Liu Changsheng,Miao Qingjie,Zhao Yi,et al.Study on Seismic Anisotropy of Upper Mantle beneath Heilongjiang Region[J].Journal of Geodesy and Geodynamics, 2016,36(7):620-624)
[15] 孟宪森,朱景春,孙文斌,等.东北地区浅源中强震及深震与西太平洋板块俯冲[J].东北地震研究,1996,12(2):12-23(Meng Xiansen,Zhu Jingchun,Sun Wenbin,et al.Shallow Moderate and Deep Earthquake in Northeast China and Western Pacific Plate Subduction[J].Seismological Research of Northeast China, 1996,12(2):12-23)
[2] 刘雷,杜建国,易丽.亚稳态橄榄石相变与深源地震研究[J].地震,2007,27(3):41-50(Liu Lei,Du Jianguo,Yi Li. An Advance in Metastable Olivine Phase Transformation and Deep-Focus Seismicity [J].Earthquake,2007,27(3):41-50)
[3] 宁亚灵,王利花,程紫燕,等.临汾台地电阻率趋势下降有限元数值分析[J].地震工程学报,2017,39(增1):121-126(Ning Yaling,Wang Lihua,Cheng Ziyan, et al. The Trend Variations of Geo-Resistivity at Linfen Seismic Station Using Finit Element Method[J]. China Earthquake Engineering Journal, 2017,39(S1):121-126)
[4] 冯志生,梅卫萍,张秀霞,等.中强震前地磁谐波振幅比的趋势性变化特征初步研究[J].西北地震学报,2004,26(1):50-56(Feng Zhisheng,Mei Weiping,Zhang Xiuxia et al.Preliminary Study on the Characteristics of Long and Medium Term Variation for the Amplitude Ratio of Geomagnetic Humorous Wave before Moderate Strong Earthquakes[J].Northwestern Seismological Journal, 2004,26(1):50-56)
[5] 倪晓寅,陈莹.强震前短周期地磁谐波比变化特征[J].地震研究,2017,40(3):431-436(Ni Xiaoyin,Chen Ying.The Variation Characteristics of Short-Period Geomagnetic Harmonic Wave Amplitude Ratio before Strong Earthquakes[J].Journal of Seismological Research, 2017,40(3):431-436)
[6] 戴勇,高立新,张立丰.甘-青地区地磁谐波振幅比分析[J].地震工程学报,2016,38(1):12-18(Dai Yong,Gao Lixin,Zhang Lifeng. Study on the Amplitude Ratio of Geomagnetic Harmonic Wave in Gansu-Qinghai Region[J].China Earthquake Engineering Journal, 2016,38(1):12-18)
[7] 戴苗,刘坚,蒋玲霞,等.巴东地震前介质电性变化特征[J].大地测量与地球动力学,2013,34(3):48-51(Dai Miao,Liu jian,Jiang Lingxia,et al.Variation Characteristics of Earth Electrical Property before Badong Earthquake and Formation Mechanism[J].Journal of Geodesy and Geodynamics,2013,34(3):48-51)
[8] Lei J S,Xie F R,Fan Q C.Seismic Imaging of the Deep Structure under the Chinese Volcanoes:An Overview[J].Physics of the Earth & Planetary Interiors,2013,224(4):104-123
[9] 北京大学,中国科学技术大学地球物理教研室.地磁学教程[M].北京:地震出版社,1986(Peking University, School of Geophysics, China University of Science and Technology. Geomagnetism Course[M]. Beijing:Seismological Press, 1986
[10] 冯志生,居海华,李鸿宇,等.地磁谐波振幅比异常特征进一步研究及定性解释[J].华南地震,2009,29(1):17-23(Feng Zhisheng,Ju Haihua,Li Hongyu,et al. Further Study on Characteristics of Long-Term and Medium-Term Variations of Geomagnetic Harmonic Wave Amplitude Ratios before Moderate or Strong Earthquakes[J].South China Journal of Selsmology, 2009,29(1):17-23)
[11] 龚绍京,陈化然. 水平场转换函数空间分布特征的数值模拟[J].地震学报, 2001, 23(6): 637-644(Gong Shaojing,Chen Huaran.Numerical Modeling for the Spatial Distribution Characteristics of Horizontal Field Transfer Function[J].Acta Seismologica Sinica, 2001, 23(6): 637-644)
[12] 杜学彬,李宁,叶青,等.强地震附近视电阻率各向异性变化的原因[J].地球物理学报,2007,50(6):1 802-1 810(Du Xuebin,Li Ning,Ye Qing.et al. A Possible Reason for the Anisotropic Changes in Apparent Resistivity near the Focal Region of Strong Earthquake[J].Chinese Journal of Geophysics,2007,50(6):1 802-1 810)
[13] 汤吉,赵国泽,王继军,等.基于地下电性结构探讨中国东北活动火山形成机制[J].岩石学报,2006,22(6):1 503-1 510(Tang Ji,Zhao Guoze,Wang Jijun,et al. Study of the Formation Mechanism for Volcanism in Northeast China Based on Deep Electric Structure[J].Acta Petrologica Sinica,2006,22(6):1 503-1 510)
[14] 刘长生,苗庆杰,赵谊,等.黑龙江地区上地幔各向异性研究[J].大地测量与地球动力学,2016,36(7):620-624(Liu Changsheng,Miao Qingjie,Zhao Yi,et al.Study on Seismic Anisotropy of Upper Mantle beneath Heilongjiang Region[J].Journal of Geodesy and Geodynamics, 2016,36(7):620-624)
[15] 孟宪森,朱景春,孙文斌,等.东北地区浅源中强震及深震与西太平洋板块俯冲[J].东北地震研究,1996,12(2):12-23(Meng Xiansen,Zhu Jingchun,Sun Wenbin,et al.Shallow Moderate and Deep Earthquake in Northeast China and Western Pacific Plate Subduction[J].Seismological Research of Northeast China, 1996,12(2):12-23)
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