构造磁学及其预测地震研究  

Research on tectonomagnetism and its application to earthquake prediction

作　　者：詹志佳[1] 高金田[1] 赵从利[1] 沈文志[1] 

机构地区：[1]中国地震局地球物理研究所,北京100081

出　　处：《地震》2000年第z1期126-134,共9页Earthquake

基　　金：地震科学联合基金会资助项目

摘　　要：地震现场的构造磁学观测研究表明 ,在地震之前与地震之时存在明显的磁场异常变化。震磁前兆基本上是近场效应 ,其震中距为几公里至几十公里 ,其变化幅度为几 n T,前兆时间为几天至一年多。火山构造磁学研究的新进展 ,进一步表明了火山磁效应与地震、形变、破裂、喷发等火山活动状态密切相关 ,为监测与预测火山喷发灾害提供了重要的基础与方法。根据构造磁学的物理基础 ,积极开展了地震预测研究 ,显示了构造磁学在地震预测研究中的良好前景 ,但目前仍处于积累资料与试验阶段 ,今后应当进一步观测研究。The tectonomagnetism investigations in the earthquake region show that obvious anomalous changes in the magnetic field exist pre- and co-earthquakes . The seismomagnetic precursors basically are near-field effects; the epicentral d istances are several to tens km; the change amplitudes are several nT; the time precursors last is several days to more than one year. New progresses of the res earch on volcano-tectonomagnetism further show that the volcano-magnetic effec ts are closely related to the volcano-activity states, such as volcano-earthquak e, deformation, fracture and eruption; it provides important basis and method for monitoring and predicting volcano-eruption hazards. According to the physical b a sis of tectonomagnetism, earthquake prediction is actively carried out, showing a perspective earthquake prediction research by means of tectonomagnetism. Howev er, it is still situated at the period of data accumulation and the trial stage, and further observation and research should be made in the future.

关 键 词：构造磁学 震磁效应 火山磁效应 地震预测 

分 类 号：P315[天文地球—地震学]