摘要
本文利用超低频电磁(ELF)观测仪电磁波技术测量空间和大地电磁信号,可研究空间电磁场和地下电阻率结构,研究地震引起的电磁场异常变化。2009年3-10月,在吉林省中东部发生多次中等地震前后,电磁场和视电阻率出现了较好的异常对应。本文对这些电磁异常进行了分析并对产生这些异常变化的可能的成因机制进行了探讨。
Measuring the spatial and telluric electromagnetic signals by electromagnetic wave technology with Ultra-Low Frequency （ELF） electromagnetic observation instrument can be used to study the spatial electromagnetic fields and the subterranean resistivity structures, and the earthquake-led-to abnormality variations of the electromagnetic field. From March to October in 2009, before and after the many moderate earthquakes occurred in the mid-eastern part of Jilin Province, the electromagnetic field and the apparent resistivity showed better analogies of abnormalities. In our article, electromagnetic abnormalities, and the possible causes of formation and mechanism abnormality variaions are also probed. we analyze these that led to these
出处
《防灾减灾学报》
2010年第3期48-54,共7页
Journal of Disaster Prevention And Reduction
关键词
超低频
深源地震
电磁场
电磁异常
ultra -Low frequency
deep -focus earthquake
electromagnetic field
electromagnetic abnormality
