摘要
"九五"期间研制的"EMAOS"电磁辐射仪,其接收原理是按大地电磁测深的原理改进而研制的。选择接收频段为0.01～10Hz,该频段探测深度在0～20km,是浅源地震发生的层位。记录的电磁扰动是在应力场作用下,动电效应产生的电磁场。电场和磁场同时记录增强了信息可信度的判断能力,记录震例表明,异常规律与已有模拟结果基本相同。因此,已总结的模拟记录预报指标等可在数字记录结果中使用。
The electromagnetic radiation instrument 'EMAOS' was developed in the period of 'Ninth-five Years' Plan. The instrument 'EMAOS' is improved from the theory of the telluric electromagnetic sounding. The received spectrum band of the instrument extends from 0.01 Hz to 10 Hz; hence the sounding depth is between 0 and 20 km where shallow earthquakes occur. The recorded electromagnetic disturbance is the electromagnetic field form the electrokinetic effect under action of the stress field. It improves the reliability of the recorded information because the electric and the magnetic field are recorded at same time. The records show that the feature of anomaly before earthquakes is almost consistent with the result of the analog record. Therefore, we can apply the prediction index of analog records in the digital record research.
出处
《地震》
CSCD
北大核心
2004年第1期96-103,共8页
Earthquake
基金
十五"国家科技攻关项目(2001BA601B01 05 03)
关键词
电磁辐射
大地电磁测深
探测深度
动电效应
应力场
电磁扰动
Electromagnetic radiation
Observation principle
Telluric electromagnetic sounding
Sounding depth
Electrokinetic effect
