A mass of model experiments are performed. By studying the response of several typical conductive bodies in dipole transient electromagnetic systems, this paper analyses the exploration resolving power of dipole configuration, discusses the problems about dipolar distance and the way to fix the detecting point, and finally concludes the working characteristics of this configuration. The forms of response curves of these bodies in dipole transient electromagnetic measurement are complicated and more arduous to interpret. However, the disturbing of primary field is small for dipole configuration and it has strong ability to distinguish dissimilar bodies from background. Moreover, it is very convenient and flexible. So it adapts to be used in the transient electromagnetic detecting of shallow seafloor and other special environment.
刘长胜, 林君, 嵇艳鞠, 吴国强. 瞬变电磁法偶极装置模型实验研究[J]. 物探与化探, 2006, 30(5): 430-434.
LIU Chang-sheng, LIN Jun, JI Yan-ju, WU Guo-qiang. ON MODEL EXPERIMENTS OF TEM DIPOLE CONFIGURATION. Geophysical and Geochemical Exploration, 2006, 30(5): 430-434.
[1] 蒋邦远.实用近区磁源瞬变电磁法勘探[M].北京:地质出版社,1998.
[2] 牛之琏.时间域电磁法原理[M].长沙:中南工业大学出版社,1992.
[3] 布塞利 G,麦克拉凯 K G,鲁特 H.瞬变场法野外工作方法和数据解释手册[M].蒋邦远译.北京:地质出版社,1992.
[4] 静恩杰,李志聃.瞬变电磁法野外工作方法[J].中国煤田地质,1995,7(3).
[5] 王一新,王家林.瞬变电磁系统探测浅海底电导率的研究[J].地球物理学报,1998,41(6).
[6] Coggon J H,Morrison H F.Electromagnetic investigation of the sea floor[J].Geophysics,1970,35(3):476.
[7] Edwards R N.Two-dimensional modeling of a towed in-line electric dipole-dipole sea-floor electromagnetic system:The optimum time delay or frequency for target resolution[J].Geophysics,1988,53(6):846.
[8] Cheesman S J,Edwards R N,Chave A D.On the theory of sea-floor conductivity mapping using transient electromagnetic systems[J].Geophysics,1987,52(2):204.