地质与勘探2011，Vol.47Issue(4)：673-678,6.
低阻覆盖层对高频大地电磁测深的影响
Effect of a Low-Resistivity Cover on High-Frequency MagnetoteUuric Sounding
摘要
Abstract
Because of the shielding effect on electromagnetic waves, the low-resistivlty cover can reduce the detability of the high-frequency magneto telluric sounding method. By one-dimensional forward modeling of models with and without a low-resistivity cover, we have made a comparative study on this issue. The result indicates that the detection ability generally decreases when the model is covered with a low-resistivity layer. And the ratio of the detecting thickness of the host overlying the target to the thickness of the target is linearly correlated with the ratio of the resistivity of the host to that of the target for the same level of detection ability. An exploration example verifies the rule above on the effect of the cover on the high-frequency magnetotellurie sounding.关键词
高频大地电磁/低阻覆盖层/探测能力/EH-4/正演模拟Key words
high-frequency magnetotelluric sounding/low-resistivity cover/detectability/EH-4/forward modeling分类
天文与地球科学引用本文复制引用
席振铢,冯万杰,李瑞雪,陈兴朋..低阻覆盖层对高频大地电磁测深的影响[J].地质与勘探,2011,47(4):673-678,6.基金项目
“十一五”国家科技支撑计划项目（2006BAB01B07）资助. （）
