华北—东北地区震磁异常与日本强震对应关系
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摘要
选取2009—2014年华北—东北地区发生的12次中等地震,对该区8个地磁台站记录的地磁Z分量日变幅进行小波分析及合成计算,与日本海沟同期发生的12次M≥6.5强震进行关联性分析,发现日本强震对中国华北—东北地区中等地震活动具有连带作用,表现在:(1)日本强震发生前后,华北或东北地区均有M 4—5地震出现,频次一般为1—3,间隔几天至5个月左右;(2) 2011年3月10日日本M 9.1地震后,华北、东北地区中等地震震级有所升高,其中东北地区由M 4升至M 5,距日本最近的中俄交界甚至出现M 6.1地震,华北地区唐山老震区出现1次M 4.8地震,震级接近5;(3)每次日本强震出现后几天至2个月内,8个地磁台地磁Z分量小波细节6阶合成曲线值均出现2—6个月高值异常,但幅度大小与强震震级无明显规律可循,而华北或东北地区中等地震一般在异常高值出现前后低值附近发生。
At first, 12 moderate earthquakes occurred in north-northeast China from 2009 to 2014 is selected. The wavelet amplitude of the geomagnetic Z component from the 8 geomagnetic stations on this area is recorded. Besides 12 earthquakes with M ≥ 6.5 in Japan Trenches during the same time is found that the strong earthquakes in Japan had a collateral effect on the medium earthquakes in north-northeast China. It is shown that as follows :(1) Before and after the strong earthquake in Japan, there are 1-3 earthquakes with M 4-5 during a few days to about 5 months in North-Northeast China;(2) After the M 9.0 earthquake on March 10, 2011 in Japan, the moderate earthquakes from M 4 to M 5 in North China and Northeast China will increased. Even the M 6.1 earthquake occurred in the Sino-Russian border closest to Japan. At the same time, the M 4.8 near magnitude of 5 occurred in Tangshan old earthquake area;(3) When the strong earthquake in Japan occurred within a few days to 2 months, wavelet detail 6-order arithmetic average synthesis value of the Z component of the 8 geomagnetic stations all showed anomaly with high values for 2-6 months, but the amplitude and intensity of earthquake magnitude did not show any obvious pattern, while the moderate earthquakes usually occurred around anomaly with low values in North China or Northeast China.
At first, 12 moderate earthquakes occurred in north-northeast China from 2009 to 2014 is selected. The wavelet amplitude of the geomagnetic Z component from the 8 geomagnetic stations on this area is recorded. Besides 12 earthquakes with M ≥ 6.5 in Japan Trenches during the same time is found that the strong earthquakes in Japan had a collateral effect on the medium earthquakes in north-northeast China. It is shown that as follows :(1) Before and after the strong earthquake in Japan, there are 1-3 earthquakes with M 4-5 during a few days to about 5 months in North-Northeast China;(2) After the M 9.0 earthquake on March 10, 2011 in Japan, the moderate earthquakes from M 4 to M 5 in North China and Northeast China will increased. Even the M 6.1 earthquake occurred in the Sino-Russian border closest to Japan. At the same time, the M 4.8 near magnitude of 5 occurred in Tangshan old earthquake area;(3) When the strong earthquake in Japan occurred within a few days to 2 months, wavelet detail 6-order arithmetic average synthesis value of the Z component of the 8 geomagnetic stations all showed anomaly with high values for 2-6 months, but the amplitude and intensity of earthquake magnitude did not show any obvious pattern, while the moderate earthquakes usually occurred around anomaly with low values in North China or Northeast China.
引文
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张建国,焦立果,刘晓灿,等.汶川MS 8.0级地震前后ULF电磁辐射频谱特征研究[J].地球物理学报,2013,56(4):1 253-1 261.
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Parkinson W D.Introduction to Geomagnetism[M].London:Scottish Academic Press Ltd,1983.
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Zhang J G,Wu X P,Yang X D,et al.Observational evidence of anisotropic changes of apparent resistivity before strong earthquakes[J].Geophys J Int,2017,210(3):1 323-1 331.
Zhang J G,Yang X D,Yan J G,et al.An analysis of the characteristics of crustal magnetic anomaly in China based on CHAMPsatellite data[J].Geodesy and Geodynamics,2018,9(4):328-333.
冯志生,王建宇,蒋延林,等. 地磁垂直分量日变幅逐日比及其与地震关系的探讨 [J]. 华南地震,2001,21(2):20-27.
高立新. 中国东北地区地震活动的动力背景及其时空特征分析 [J]. 地震,2011,31(1):41-51.
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(3):855-863.
林云芳,曾小苹,郭启华. 中国华北地区地磁长期变化的分析 [J]. 地震学报,1982,4(1):74-83.
林云芳,曾小苹,董玉兰,等. 华北和东北地区地磁场变化与大地震的关系 [J]. 地震学报,1988,10(4):396-405.
马钦忠,塔青,王炜,等. 地磁数据处理与地震关系之探 [J]. 华南地震,2008,28(3):21-30.
孙文斌,和跃时,日本海板块俯冲与中国东北地震 [J]. 防震减灾学报,2015,31(4);1-7.
孙文斌,和跃时. 中国东北地区地震活动特征及其与日本海板块俯冲的关系 [J]. 地震地质,2004,26(1):122-132.
孙文斌,王晓峰,常征,等. 我国东北地区地震时空演变特征及其动力学研究 [J]. 东北地震研究,2005,21(2):1-8.
万天丰. 中国大地构造学 [M]. 北京:地质出版社,2011:10-497.
王亶文. 地磁日变规律的破坏与地震的关系研究 [J]. 地震地磁观测与研究,2003,24(1):1-6.
徐如刚,张毅,顾春雷,等.石圈地震前后岩磁场变化特征分析[C]//第九届中国国际地球电磁学术讨论会,2009:230-234.吴佳翼,郁曙君,何淑韵.华北地震同日本地震的相关性[J].地球物理学报,1979,22(4):415-438.
臧绍先,宁杰远,许立忠.琉球岛弧地区的地震分布、Benioff带形态及应力状态[J].地震学报,1989,11(2):113-123.
曾小苹,林泊宁,陈维升,等.日本大震与中国及邻区中强地震的遥相关[J].地球科学-中国地质大学学报,2014,39(12):1 864-1 872.
张凤鸣,张亚江,许晓艳,等.日本海西部-中国东北深震区俯冲运动对东北地区浅源地震的动力的作用[J].东北地震研究,2007,23(1):33-39.
张建国,焦立果,刘晓灿,等.汶川MS 8.0级地震前后ULF电磁辐射频谱特征研究[J].地球物理学报,2013,56(4):1 253-1 261.
张立敏,唐晓明,西太平洋板块俯冲运动与中国东北深震带[J].地球物理学报,1983,26(4):331-340.
张希,崔笃信,郝明,等.全国主要构造区近期应变积累动态演化研究[J].地震工程学报,2014,36(1):61-68.
赵文峰.珲春深震火山共生与内陆地震线[J].海洋地质与第四纪地质,1985,5(1):83-90.
Parkinson W D.Introduction to Geomagnetism[M].London:Scottish Academic Press Ltd,1983.
Rikitake T.Earthquake Prediction[M].Amsterdam:Elsevier Scientific Publishing Company,1976.
Stacey F D.The seismomagnetic effect[J].Pure Appl Geophys,1964,58(1):5-22.
Zhang J G,Wu X P,Yang X D,et al.Observational evidence of anisotropic changes of apparent resistivity before strong earthquakes[J].Geophys J Int,2017,210(3):1 323-1 331.
Zhang J G,Yang X D,Yan J G,et al.An analysis of the characteristics of crustal magnetic anomaly in China based on CHAMPsatellite data[J].Geodesy and Geodynamics,2018,9(4):328-333.