Computation of apparent resistivity for separately acquired electromagnetic signals in MT exploration of water domain
Yang Sheng
Zhongse Geophysical Exploration Ltd. Co., Nonferrous Mineral Geologic Survey Center, No. C-1., Lianhuadong Road, Xicheng District, Beijing City, 100045, China
Abstract：When carrying out the magnetotelluric sounding exploration in water domain, because the accurate deployment of probes on water bottom for receiving magnetic signal is difficult,but only on land, therefore, the electromagnetic signals should be separately acquired, which leads received electronic and magnetic signals to be unable to be at same interface and correction of computed apparent resistivity and impedance phase should be carried out. Through the relationship between electromagnetic field and impedance on different interfaces of layered media, the paper deduced the computation formula correcting the real-surveyed data to be apparent resistivity and impedance on water surface or bottom. The tests of theoretical models and application of real data showed the correctness of the corrected approach.
杨生. 水域MT勘探电磁信号分离采集的视电阻率计算[J]. 石油地球物理勘探, 2006, 41(5): 592-595.
Yang Sheng. Computation of apparent resistivity for separately acquired electromagnetic signals in MT exploration of water domain. OGP, 2006, 41(5): 592-595.
