SHIFTING SELF-CORRELATION METHOD INITIALY USED IN THE APPARENT RESISTIVITY OBSERVATION DATA

doi:10.3969/j.issn.0253-4967.2016.04.017

Abstract

Abstract:

In this paper,we propose a method of seismic prediction using the geo-electric resistivity shifting self-correlation (SSC),and a numerical test is carried out using random time series analysis to verify the validity of the method.The SSC method is applied to the actual observation data of three geo-electric resistivity stations,and results are obtained as follows:(1) SSC coefficient changes in Ganzi and Shandan stations have good correspondence to earthquake,which is represented mainly by the phased increase of correlation coefficient appearing six months to a year before the earthquake.At the same time,the correlation coefficient anomalies of the two stations also exhibit strong anisotropy.(2) Although Chengdu geo-electric resistivity station had suffered serious disturbance,the correlation coefficient anomaly also has a good correspondence with earthquake.In addition to the validity of the SSC method,it may also be attributed to the magnitude of the earthquake event,the smaller distance of epicenter,and the time of the earthquake.Anisotropy also exists in the anomaly at Chengdu station.(3) By comparing the characteristics of different magnitudes of earthquakes,the results are obtained that,when the magnitude of the selected characteristic earthquake is relatively small,the amplitude of the anomaly before earthquake is different,but when the magnitude is larger,for example M_S ≥ 5.0,the impact on the results of this study is very limited.In addition,we briefly discussed the anisotropy of seismic geoelectrical resistivity anomalies and the selection of the characteristic earthquake.

Key words: shifting self-correlation method, apparent resistivity, earthquake anomaly, correlation coefficient, anisotropy

摘要：

提出了地电阻率滑动自相关数据处理方法，利用随机时间序列对方法进行了数值检验，验证了方法的有效性。将滑动自相关方法应用于3个地电阻率台站实际观测资料，经分析研究得到了一些比较有意义的结果：1）甘孜台和山丹台地电阻率滑动相关系数变化与地震事件有较好的对应关系，主要表现为，在震前半年到1年时间范围内，会出现相关系数阶段性增大现象，同时，这2个台站的相关系数异常也表现出比较强的各向异性特征；2）成都台地电阻率观测虽受干扰较为严重，但相关系数异常现象与地震事件仍有比较好的对应关系，除了说明所使用方法的有效性之外，还可能与参加计算的地震事件震级比较大，震中距较小，以及发震时间比较集中有关，在该台站同样也存在异常的各向异性特征；3）通过对比不同震级特征地震的相关研究结果得出，当选择的特征地震震级较小时，不同地震的震前异常幅度会有所不同，但当震级较大时（如M_S≥5.0），其对研究结果产生的影响非常有限。此外，还对地电阻率地震异常的各向异性，以及特征地震的选取问题进行了简单论述。

CLC Number:

P631.3⁺22

AN Zhang-hui, ZHAN Yan, CHEN Xiao-bin, JIANG Feng, GAO Yue. SHIFTING SELF-CORRELATION METHOD INITIALY USED IN THE APPARENT RESISTIVITY OBSERVATION DATA[J]. SEISMOLOGY AND GEOLOGY, 2016, 38(4): 1019-1029.

安张辉, 詹艳, 陈小斌, 姜峰, 高悦. 滑动自相关方法在地电阻率观测资料分析中的应用初探[J]. 地震地质, 2016, 38(4): 1019-1029.

References

杜学彬, 李宁, 叶青, 等. 2007. 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, 50(6):1802-1810.
DU Xue-bin, LI Ning, YE Qing, et al. 2007. A possible reason for the anisotropic changes in apparent resistivity near the focal region of strong earthquake［J］. Chinese Journal of Geophysics, 50(6):1802-1810(in Chinese).
杜学彬, 刘君, 崔腾发, 等. 2015. 2次近距离大震前成都台视电阻率重现性、相似性和各向异性变化［J］. 地球物理学报, 58(2):576-588.
DU Xue-bin, LIU Jun, CUI Teng-fa, et al. 2015. Repeatability, similarity and anisotropy changes in apparent resistivity of station Chengdu before two great earthquakes in near distance［J］. Chinese Journal of Geophysics, 58(2):576-588(in Chinese).
杜学彬, 阮爱国, 范世宏, 等. 2001. 强震近震中区地电阻率变化速率的各向异性［J］. 地震学报, 23(3):289-297.
DU Xue-bin, RUAN Ai-guo, FAN Shi-hong, et al. 2001. Anisotropy of the variation rate of apparent resistivity near the epicentral region of strong earthquakes［J］. Acta Seismological Sinica, 23(3):289-297(in Chinese).
杜学彬, 赵家骝, 谭大诚, 等. 2006. 地震台站建设规范地电台站:第1部分地电阻率台站［M］. 北京:地震出版社.
DU Xue-bin, ZHAO Jia-liu, TAN Da-cheng, et al. 2006. Specification for the Construction of Seismic Station-Geoelectrical Station, Part 1:Geoelectrical Resistivity Observatory［M］. Seismological Press, Beijing(in Chinese).
钱复业, 赵玉林, 刘婕, 等. 1990. 唐山7.8级地震地电阻率临震功率谱异常［J］. 地震, 3:33-39.
QIAN Fu-ye, ZHAO Yu-lin, LIU Jie, et al. 1990. Power spectrum anomaly of earth resistivity immediately before Tangshan earthquake［M］M=［M］7.8［J］. Earthquake, 3:33-39(in Chinese).
钱家栋. 1993. 与大震孕育过程有关的地电阻率变化研究［J］. 中国地震, 9(4):341-350.
QIAN Jia-dong. 1993. A study on the changes in geoelectrical resistivity associated with preparatory process of great earthquake in China［J］. Earthquake Research in China, 9(4):341-350(in Chinese).
钱家栋, 杜学彬, 蔡晋安, 等. 2009. 地震地电观测方法地电阻率:第1部分单极距观测［M］. 北京:地震出版社.
QIAN Jia-dong, DU Xue-bin, CAI Jin-an. et al. 2009. The Method of Earthquake-related Geoelectrical Monitoring-Geoelectrical Resistivity Observation-Part 1:The Single Separation Configuration［M］. Seismological Press, Beijing(in Chinese).
钱家栋, 马钦忠, 李劭秾. 2013. 汶川M_S8.0地震前成都台NE测线地电阻率异常的进一步分析［J］. 地震学报, 35(1):4-17.
QIAN Jia-dong, MA Qin-zhong, LI Shao-nong. 2013. Further study on the anomalies in apparent resistivity in the NE configuration at Chengdu station associated with Wenchuan M_S8.0 earthquake［J］. Acta Seismologica Sinica, 35(1):4-17(in Chinese).
王成虎, 宋成科, 郭启良, 等. 2014. 利用原地应力实测资料分析芦山地震震前浅部地壳应力积累［J］. 地球物理学报, 57(1):102-114.
WANG Cheng-hu, SONG Cheng-ke, GUO Qi-liang, et al. 2014. Stress build-up in the shallow crust before the Lushan earthquake based on the in-situ stress measurements［J］. Chinese Journal of Geophysics, 57(1):102-114(in Chinese).
叶青, 杜学彬, 陈军营, 等. 2005. 2003年大姚和民乐-山丹地震1年尺度预测［J］. 地震研究, 28(3):226-230.
YE Qing, DU Xue-bin, CHEN Jun-ying, et al. 2005. One year prediction for the Dayao and Minle-Shandan earthquakes in 2003［J］. Journal of Seismological Research, 28(3):226-230(in Chinese).
张学民, 李美, 关华平. 2009. 汶川8.0级地震前的地电阻率异常分析［J］. 地震, 29(1):109-115.
ZHANG Xue-min, LI Mei, GUAN Hua-ping. 2009. Anomaly analysis of earth resistivity observations before the Wenchuan earthquake［J］. Earthquake, 29(1):109-115(in Chinese).
赵玉林, 钱复业. 1978. 唐山7.8级强震前震中周围形变电阻率的下降异常［J］. 地球物理学报, 21(3):181-190.
ZHAO Yu-lin, QIAN Fu-ye. 1978. Electrical resistivity anomaly observed in and around the epicentral area prior to the Tangshan earthquake of 1976［J］. Chinese Journal of Geophysics, 21(3):181-190(in Chinese).
朱涛. 2013. 汶川M_S8.0地震前区域性视电阻率异常初步研究［J］. 地震学报, 35(1):18-25.
ZHU Tao. 2013. Preliminary study on regional geo-resistivity anomaly before the Wenchuan M_S8.0 earthquake［J］. Acta Seismologica Sinica, 35(1):18-25(in Chinese).
Gutenberg B, Richter C F. 1956. Magnitude and energy of earthquakes［J］. Annals of Geophysics, 9:1-15.
Huang Q H. 2011. Retrospective investigation of geophysical data possible associated with the M_S8.0 Wenchuan earthquake in Sichuan, China［J］. Journal of Asian Earth Sciences, 41(45):421-427.
Jiang F, Chen X B, Zhan Y, et al. 2016. Shifting correlation between earthquakes and electromagnetic signals:A case study of the 2013 Minxian-Zhangxian M_L6.5(M_W6.1)earthquake in Gansu, China［J］.Pure and Applied Geophysics, 173(1):269-284.
Lu J, Qian F Y, Zhao Y L. 1999. Sensitivity analysis of the Schlumberger monitoring array:Application to changes of resistivity prior to the 1976 earthquake in Tangshan, China［J］. Tectonophy, 307:397-405.

[1]	XIE Tao, YU Chen, WANG Ya-li, LI Mei, WANG Zhong-ping, YAO Li, LU Jun. APPARENT RESITIVITY VARIATION OF TONGWEI SEISMIC STATION BEFORE THE MINXIAN-ZHANGXIAN M_S6.6 EARTHQUAKE IN 2013 [J]. SEISMOLOGY AND GEOLOGY, 2022, 44(3): 701-717.
[2]	GU Qin-ping, KANG Qing-qing, ZHANG Peng, MENG Ke, WU Shan-shan, LI Zheng-kai, WANG Jun-fei, HUANG Qun, JIANG Xin, LI Da-hu. RAYLEIGH WAVE PHASE VELOCITY AND AZIMUTHAL ANISOTROPY OF THE MIDDLE-SOUTHERN SEGMENT OF THE TAN-LU FAULT ZONE AND ADJACENT REGIONS FROM AMBIENT NOISE TOMOGRAPHY [J]. SEISMOLOGY AND GEOLOGY, 2020, 42(5): 1129-1152.
[3]	XIE Tao, LU Jun. THE EFFECTS OF LATERAL INHOMOGENEITY ON ANISOTROPIC CHANGES OF APPARENT RESISTIVITY AND THE DEPTH OF RESISTIVITY CHANGES BEFORE EARTHQUAKES [J]. SEISMOLOGY AND GEOLOGY, 2020, 42(5): 1172-1187.
[4]	GAO Jian, YANG Yi-hai, HUANG Shi-yuan, YANG Cong, ZHANG Yuan-sheng, LIU Cun-xi, LI Shao-rui, HUA Qian. CRUSTAL ANISOTROPY AND ITS TECTONIC IMPLICATIONS IN THE CHONGQING REGION [J]. SEISMOLOGY AND GEOLOGY, 2020, 42(1): 147-162.
[5]	XIE Tao, LU Jun, YAN Wei. THE MECHANISM OF DIURNAL VARIATION IN CONSECUTIVE APPARENT RESISTIVITY OBSERVATION [J]. SEISMOLOGY AND GEOLOGY, 2019, 41(6): 1464-1480.
[6]	SHANG Yong-mei, YANG Yu, YANG Xiao-song. CRYSTALLOGRAPHIC PREFERRED ORIENTATION(CPO) OF ANISOTROPIC MINERALS IN THE LITHOSPHERE AND ITS SIGNIFICANCE TO THE STUDY OFLITHOSPHERE DYNAMICS [J]. SEISMOLOGY AND GEOLOGY, 2019, 41(3): 704-725.
[7]	WU Qing, GAO Meng-tan. A PRELIMINARY STUDY ON THE CORRELATIVITY OF SEISMIC HAZARD BETWEEN BEIJING AREA AND XIONG'AN NEW AREA [J]. SEISMOLOGY AND GEOLOGY, 2018, 40(4): 935-943.
[8]	WANG Qing-lin, SUN Huai-feng, ZHU Cheng-lin, ZHANG Ji-hong, TANG Ting-mei. DEEP TECTONIC STRESS CHANGE BASED ON LONG-TERM APPARENT RESISTIVITY TIME SERIES: A CASE STUDY FROM NORTH SECTION OF YISHU FAULT ZONE [J]. SEISMOLOGY AND GEOLOGY, 2017, 39(1): 147-157.
[9]	XIE Tao, LU Jun. APPARENT RESISTIVITY TEMPORAL VARIATION CHARAC-TERISTICS AFFECTED BY THE FIXED DISTURBANCE SOURCE ON SURFACE OF MEASURING AREA [J]. SEISMOLOGY AND GEOLOGY, 2016, 38(4): 922-936.
[10]	NI Hong-yu, LIU Ze-min, HONG De-quan, WANG Xiao-li, ZHAO Peng. comprehensive study on the changing process of focal mechanisms of the 2014 huoshan m_s4.3 earthquake sequence [J]. SEISMOLOGY AND GEOLOGY, 2015, 37(4): 1004-1019.
[11]	XIE Tao, LU Jun. three-dimensional sensitivity coefficients of apparent resistivity and preliminary application [J]. SEISMOLOGY AND GEOLOGY, 2015, 37(4): 1125-1135.
[12]	QIN Qing-yan, LUO Wei, ZHANG Wei. THE INFLUENCE OF THE EARTH'S CURVATURE ON THE LONG-PERIOD MAGNETOTELLURIC SOUNDING METHOD [J]. SEISMOLOGY AND GEOLOGY, 2012, (3): 456-466.
[13]	SUN Wei-huai, TANG Ji, ZHANG Ping, YANG Xue-hui. RESEARCH ON THE CHARACTERISTICS OF ANOMALIES IN ELF ELECTROMAGNETIC OBSERVATIONS IN YUNNAN PROVINCE [J]. SEISMOLOGY AND GEOLOGY, 2012, (3): 488-499.
[14]	CHEN Mei-hua, DENG Zhi-hui, MA Xiao-jing, TAO Jing-ling, WANG Yu. LONG-AND MID-TERM ANOMALOUS VARIATIONS OF ATMOSPHERIC WATER VAPOR BEFORE STRONG EARTHQUAKE [J]. SEISMOLOGY AND GEOLOGY, 2011, 33(3): 549-559.
[15]	CAI Xiao-gang. THE EFFECT OF CRACK PARAMETERS ON ATTENUATION ANISOTROPY: NUMERICAL MODELING [J]. SEISMOLOGY AND GEOLOGY, 2011, 33(3): 693-705.