摘要
对被动式超低频电磁探测技术的场源问题、噪声的滤除,以及超低频电磁波与地下物质相互作用机理进行了探讨和实验。零磁场实验表明传感器在地面接收的超低频电磁波来自地下地层等地质体的辐射。由于场源和探测环境的复杂性,对传感器接收的原始超低频电磁波数据进行软、硬件滤波处理,消除工频干扰和随机噪声,得到了干扰影响小的探测曲线。塔里木塔参1井的探测试验表明,被动式超低频电磁探测技术可以快速准确的探测深部地质信息。
The source of passive ultra-low frequency（ULF）, the elimination of noise, and the interaction of ULF with underground substances are discused and tested. The zero magnetic field experiment shows that the ULF received by instrument comes from the emission of underground object. Because of the complexity of the source and exploration situation, it＇ s necessary for the received original ULF data to be filtered in order to get the clearer exploration curves which are less jammed. The exploration result of Tacan No. 1 Well in Tarim Basin shows that the passive ULF technique can gain the deep geological information rapidly and accurately.
出处
《北京大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第4期628-632,共5页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
国家高技术研究发展计划专项经费(2006AA06Z233
2007AA12Z163)
北京市自然科学基金(4082013)资助
关键词
天然电磁场
超低频
深部地质
零磁场
工频干扰
陷波器
natural electromagnetic field
ultra-low frequency
deep geology
zero magnetic field
power-line interference
notch filter
