摘要
结合长江中下游某矿集区大地电磁观测环境,分析大型矿山、通讯基站及其他主要电磁噪声源对视电阻率曲线的影响。依据时域波形将噪声分为脉冲噪声、周期噪声、三角波噪声、方波噪声、阶跃噪声、似充放电模式的三角噪声,便于在后期资料处理过程中针对不同的噪声类型对大地电磁数据进行降噪处理。
Based on analyzing the actually measured MT data of an ore concentration area in the middle and lower reaches of the Yangtze River and considering the actual situation in the study area, this paper analyzed the profile characteristics of noise and divided the noise into 6 kinds, namely, impulse noise, periodic noise, triangle-wave noise, square-wave noise, step noise and triangular charge- discharge mode noise. The results obtained are helpful to making de-noising treatments directed against different noise types in the late -stage data processing.
出处
《物探与化探》
CAS
CSCD
北大核心
2011年第5期658-662,共5页
Geophysical and Geochemical Exploration
关键词
矿集区
大地电磁
噪声源
噪声特点
ore concentration area
MT
noise source
noise characteristics
