地震研究

中强地震前电磁扰动异常信息量S的分析^*

邓柏昌¹,魏焕²,于立业³

(1.华南理工大学理学院物理系,广州 510641; 2.山东省地震局,济南 250014; 3.山东省龙口市地震局,山东龙口265701)

Analysis of the Quantity of Electromagnetic Disturbance Abnormal Information S before the Medium-Strong Earthquake

DENG Bai-chang¹,WEI Huan²,YU Li-ye³

(1.Physical Departmant of College of Science of South China University of Techology,Guangzhou 510641,Guangdong,China)(2.Earthquake Administration of Shandong Province,Jinan 250014,Shandong,China)(3.Earthquake Administration of Longkou Municipality,Longkou 265701,Shandong,China)

Keywords：precursory-observation network,electromagnetic disturbance observation,abnormal information quantity S

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参考文献

通过对2006年山东省地震电磁扰动监测台网的电磁扰动异常资料的分析,定义了地震电磁扰动异常信息量S,并用来定量研究异常信息的特征。结果表明,S值大小可能与地震的震级有关,并且反映了区域应力场的活动强度和研究区f域的地震活动。最后从物理机制和震例两个方面对S作了进一步论述。

We analyze the abnormal data observed by Shandong Earthquake Precursory Electromagnetic Disturbance Observational Network and quantitively study the abnormal characteristics with the definition of the electromagnetic disturbance abnormal information S.The results show that S reflects the earthquake activity and intensity of the stress field and has related to the potential earthquake's magnitude.Further,we also discuss S on the physics and other example of the earthquake.

引言
1 2006年山东省地震前兆电磁扰动异常监测资料
2 电磁扰动异常信息量S的定义及其与震级的关系
3 物理机制的认识
4 用电磁扰动异常信息量S分析中强地震
5 结论

表1 山东省地震前兆电磁扰动短临监测网台站情况表<br/>Tab.1 Observational network of precursory electromagnetic disturbance in Shandong Province

表1 山东省地震前兆电磁扰动短临监测网台站情况表
Tab.1 Observational network of precursory electromagnetic disturbance in Shandong Province

图1 山东省地震前兆电磁扰动短临监测台网<br/>Fig.1 Distribution of observational network of earthquake precursory electromagnetic disturbance in Shandong Province

图1 山东省地震前兆电磁扰动短临监测台网
Fig.1 Distribution of observational network of earthquake precursory electromagnetic disturbance in Shandong Province

图2 范县4.6级地震前山东电磁扰动异常(a)胶州台北南向电磁波超低频电场(2006-03-20～2006-04-10);(b)胶州台东西向电磁波超低频电场(2006-03-20～2006-04-10);(c)胶州台北南向电磁波超低频磁场(2006-03-20～2006-04-10);(d)胶州台东西向电磁波超低频磁场(2006-03-20～2006-04-10);(e)费县台垂直向;(f)曲阜台南北向;(g)曲阜台东西向
Fig.2 Abnormal electromagnetic disturbance detected in Shangdong before the MS4.6 earthquake in Fanxian County,Henan Province(a)electric field of ultra-low frequency electromagnetic wave in NS direction at Jiaozhou station(2006-03-20～2006-04-10),(b)electric field of ultra-low frequency electromagnetic wave in EW direction at Jiaozhou station(2006-03-20～2006-04-10),(c)magnetic field of ultra-low electromagnetic wave in NS direction at Jiaozhou station(2006-03-20～2006-04-10),(d)magnetic field of ultra-low electromagnetic wave in EW direction at Jiaozhou station(2006-03-20～2006-04-10),(e)vertical direction at Feixuan station,(f)NS direction at Qufu station,(g)EW direction at Qufu station

图3 文安5.1级地震前山东部分电磁扰动前兆异常<br/>(a)安丘台东西向电磁波超低频电场(2006-06-20～2006-07-10);(b)安丘台东西向电磁波超低频磁场(2006-06-20～2006-07-10);(c)安丘台北南向电磁波超低频磁场(2006-06-20～2006-07-04);(d)胶州台北南向电磁波超低频电场(2006-06-20～2006-07-04);(e)胶州台东西向电磁波超低频磁场(2006-06-20～2006-07-04);(f)胶州台北南向电磁波超低频磁场(2006-06-20～2006-07-04);(g)胶州台东西向电磁波超低频磁场(2006-06-20～2006-07- 04);(h)费县台垂直向深井电磁扰动异常;(i)曲阜台南北向电磁扰动异常;(j)曲阜台东西向电磁扰动异常<br/>Fig.3 Precursor abnormal electromagnetic disturbance in Shangdong before the MS5.1 earthquake in Wen'an County,Hebei Province(a)electric field of ultra-low frequency electromagnetic wave in EW direction at Anqiu station(2006-06-20～2006-07-10),(b)magnetic field of ultra-low frequency electromagnetic wave in EW direction at Anqiu station(2006-06-20～2006-07-10),(c)magnetic field of ultra-low frequency electromagnetic wave in NS direction at Anqiu station(2006-06-20～2006-07-04),(d)electric field of ultra-low frequency electromagnetic wave in NS direction at Jiaozhou station(2006-06-20～2006-07-04),(e)magnetic field of ultra-low electromagnetic wave in EW direction at Jiaozhou station(2006-06-20～2006-07-04),(f)magnetic field of ultra-low electromagnetic wave in NS direction at Jiaozhou station(2006-06-20～2006-07-04),(g)magnetic field of ultra-low electromagnetic wave in EW direction at Jiaozhou station(2006-06-20～2006-07-04),(h)deep well electromagnetic abnormality in vertical direction at Feixian station,(i)electromagnetic abnormality in NS direction at Qufu station,(j)electromagnetic abnormality in EW direction at Qufu station

图3 文安5.1级地震前山东部分电磁扰动前兆异常
(a)安丘台东西向电磁波超低频电场(2006-06-20～2006-07-10);(b)安丘台东西向电磁波超低频磁场(2006-06-20～2006-07-10);(c)安丘台北南向电磁波超低频磁场(2006-06-20～2006-07-04);(d)胶州台北南向电磁波超低频电场(2006-06-20～2006-07-04);(e)胶州台东西向电磁波超低频磁场(2006-06-20～2006-07-04);(f)胶州台北南向电磁波超低频磁场(2006-06-20～2006-07-04);(g)胶州台东西向电磁波超低频磁场(2006-06-20～2006-07- 04);(h)费县台垂直向深井电磁扰动异常;(i)曲阜台南北向电磁扰动异常;(j)曲阜台东西向电磁扰动异常
Fig.3 Precursor abnormal electromagnetic disturbance in Shangdong before the MS5.1 earthquake in Wen'an County,Hebei Province(a)electric field of ultra-low frequency electromagnetic wave in EW direction at Anqiu station(2006-06-20～2006-07-10),(b)magnetic field of ultra-low frequency electromagnetic wave in EW direction at Anqiu station(2006-06-20～2006-07-10),(c)magnetic field of ultra-low frequency electromagnetic wave in NS direction at Anqiu station(2006-06-20～2006-07-04),(d)electric field of ultra-low frequency electromagnetic wave in NS direction at Jiaozhou station(2006-06-20～2006-07-04),(e)magnetic field of ultra-low electromagnetic wave in EW direction at Jiaozhou station(2006-06-20～2006-07-04),(f)magnetic field of ultra-low electromagnetic wave in NS direction at Jiaozhou station(2006-06-20～2006-07-04),(g)magnetic field of ultra-low electromagnetic wave in EW direction at Jiaozhou station(2006-06-20～2006-07-04),(h)deep well electromagnetic abnormality in vertical direction at Feixian station,(i)electromagnetic abnormality in NS direction at Qufu station,(j)electromagnetic abnormality in EW direction at Qufu station

图4 山东省地震电磁扰动异常时序及异常信息量图<br/>(a)安丘台;(b)胶州台;(c)聊城台;(d)烟台台; <br/>(e)鄄城台;(f)费县台;(g)曲阜台;(h)总信息量<br/>Fig.4 Sequence and quantity of the abnormal electromagnetic disturbance in Shangdong Province.(a)Anqiu station,(b)Jiaozhon station,(c)Liaocheng station,(d)Yantai station,(e)Juancheng station,(f)Feixian station,(g)Qufu station,(h)amount of information

图4 山东省地震电磁扰动异常时序及异常信息量图
(a)安丘台;(b)胶州台;(c)聊城台;(d)烟台台;
(e)鄄城台;(f)费县台;(g)曲阜台;(h)总信息量
Fig.4 Sequence and quantity of the abnormal electromagnetic disturbance in Shangdong Province.(a)Anqiu station,(b)Jiaozhon station,(c)Liaocheng station,(d)Yantai station,(e)Juancheng station,(f)Feixian station,(g)Qufu station,(h)amount of information

表2 台湾集集7.4级地震前大陆地震电磁扰动异常进程表<br/>Tab.2 Procedure of abnormal electromagnetic disturbance detected in the Chinese mainland before MS7.4 Chichi,Taiwan earthquake

表2 台湾集集7.4级地震前大陆地震电磁扰动异常进程表
Tab.2 Procedure of abnormal electromagnetic disturbance detected in the Chinese mainland before MS7.4 Chichi,Taiwan earthquake

图5 台湾集集7.4级地震电磁扰动异常时序及异常信息量图<br/>(a)上海崇明台;(b)浙江加善台;(c)福建福州台;(d)福建闽清台;(e)福建安福台; <br/>(f)福建莆田台;(g)福建尤溪台;(h)广东佛山台;(i)广东汕头台;(j)台湾信息量<br/>Fig.5 Sequence and quantity of the abnormal electromagnetic disturbance of MS7.4 Chichi,Taiwan earthquake(a)Chongming station in Shanghai,(b)Jiashan station in Zhejiang,(c)Fuzhou station in Fujian,(d)Minqing station in Fujian,(e)Anfu station in Fujian,(f)Putian station in Fujian,(g)Youxi station in Fujian,(h)Foshan station in Guangdong,(i)Shantou station in Guangdong,(j)amount of information in Taiwan

图5 台湾集集7.4级地震电磁扰动异常时序及异常信息量图
(a)上海崇明台;(b)浙江加善台;(c)福建福州台;(d)福建闽清台;(e)福建安福台;
(f)福建莆田台;(g)福建尤溪台;(h)广东佛山台;(i)广东汕头台;(j)台湾信息量
Fig.5 Sequence and quantity of the abnormal electromagnetic disturbance of MS7.4 Chichi,Taiwan earthquake(a)Chongming station in Shanghai,(b)Jiashan station in Zhejiang,(c)Fuzhou station in Fujian,(d)Minqing station in Fujian,(e)Anfu station in Fujian,(f)Putian station in Fujian,(g)Youxi station in Fujian,(h)Foshan station in Guangdong,(i)Shantou station in Guangdong,(j)amount of information in Taiwan