期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：300
期号：4
页码：1-7
DOI：10.1088/1755-1315/300/4/042087
出版社：IOP Publishing
摘要：Based on the different field source theory of transient electromagnetic method, the transient electromagnetic response expression of electric dipole is given, and the transient electromagnetic response of long-line source and loop line source is calculated by the superposition principle of electromagnetic field. Based on the definition of the whole area apparent resistivity, the apparent resistivity of the three-layer model was calculated by the binary search, and the apparent resistivity curve was plotted. By comparing the apparent resistivity curves of different models, the resolution limits of transient electromagnetic methods for low-resistance thin layers under different conditions are analysed and discussed. The identification and resolution of low-resistance thin layers by transient electromagnetic method are summarized. Transient electromagnetic working devices are of great significance.
