| TEM关断效应校正方法研究 |
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| 引用本文： | 程文涛,龚育龄,张钊. TEM关断效应校正方法研究[J]. 工程地球物理学报, 2009, 6(3): 299-304. DOI: 10.3969/j.issn.1672-7940.2009.03.008 |
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| 作者姓名： | 程文涛 龚育龄 张钊 |
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| 作者单位： | 东华理工大学,江西,抚州,344000 |
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| 摘 要： | 关断效应在瞬变电磁TEM（Transient Electromagnetic）资料中产生的影响是不可忽略的，其主要影响瞬变场的早期，表现为响应值过低，使视电阻率增大，并随着关断时间的增大，这种影响也越大，但对晚期场的影响较小。针对实际工作中常用的中心回线法，对常规的几种关断效应校正方法进行编程实现和实验模拟，并在实例中应用并分析了其各自的效果。
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| 关 键 词： | 关断时间 校正方法 瞬变电磁 |
Research of the Corrective Methods in TEM Turn-off Effect |
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| Cheng Wentao,Gong Yuling,Zhang Zhao. Research of the Corrective Methods in TEM Turn-off Effect[J]. Chinese Journal of Engineering Geophysics, 2009, 6(3): 299-304. DOI: 10.3969/j.issn.1672-7940.2009.03.008 |
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| Authors: | Cheng Wentao Gong Yuling Zhang Zhao |
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| Affiliation: | (East China Institute of Technology, Fuzhou Jiangxi 344000, China) |
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| Abstract: | Ramp effect can not be neglected in the processing of the electromagnetic method. It mainly influences the early channel of the transient electromagnetic signal and the result shows the lower response which enlarges the apparent resistivity. The longer the turn-off time is, the stronger the effect is, but it has a little effect on the later channel. The paper applies the conventional turn-off corrective methods to the programming implementation and experimental modeling. |
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| Keywords: | turn-off time corrective methods TEM（transient electromagnetic） |
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