论文部分内容阅读
尽管地震短临预报极其重要,并且经过了人们多年的努力,但它仍是目前未能解决的问题。近年来,与地震相关的电磁现象被认为是解决地震短临预报的有效途径之一。现在已经积累了大量的地震电磁前兆信号的震例,这些信号分布在很宽的频带范围(DC-VHF)内,其中ULF地磁变化是最有希望的地磁前兆之一。通过监测ULF地磁变化,有望实现地震短临预报。本文将阐述从ULF电磁信号中提取震磁异常变化的方法。
Although the prediction of earthquakes is extremely important and has been going through years of hard work, it is still an unsolved problem. In recent years, the electromagnetic phenomena related to earthquakes are considered as one of the effective ways to solve the short-term and short-term earthquake prediction. There have been a large number of earthquakes of seismic electromagnetic precursors now accumulated. These signals are distributed over a wide range of frequency bands (DC-VHF), of which the ULF geomagnetic changes are one of the most promising geomagnetic precursors. By monitoring the geomagnetic changes of ULF, short-term earthquake prediction is expected. This article will explain how to extract the change of seismic magnetic anomaly from ULF electromagnetic signals.