| 对瞬变电磁法回线边长决定探测深度的质疑 |
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| 引用本文： | 王庆乙.对瞬变电磁法回线边长决定探测深度的质疑[J].物探与化探,2007,31(4):327-332. |
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| 作者姓名： | 王庆乙 |
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| 作者单位： | 北京矿产地质研究院,北京,100012 |
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| 摘 要： | 质疑瞬变电磁法探测深度取决于场源磁矩（M=IL^2）的强度，当电源能量一定时，改变回线边长就成为控制探测深度的有效措施；认为“大回线有大深度”、“小回线探测浅”等共识是不正确的，它是不计条件应用深度公式的误导。研究认为：瞬变电磁法的探测深度取决于场源含有的低频成分，基频越低，探测越深；磁矩只是决定探测结果的信噪比。
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| 关 键 词： | 探测深度 回线边长 场源频率 磁矩 |
| 文章编号： | 1000-8918（2007）04-0327-06 |
| 修稿时间： | 2006-08-10 |
QUERYING THE DEPTH FORMULA OF TEMS |
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| WANG Qing-yi.QUERYING THE DEPTH FORMULA OF TEMS[J].Geophysical and Geochemical Exploration,2007,31(4):327-332. |
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| Authors: | WANG Qing-yi |
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| Institution: | Beijing Institute of C, eologyfor Mineral Resources, Belting 100012, China |
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| Abstract: | The author queries in this paper the theory that the TEMS exploration depth depends on the strength of the loop's magnetic moment(M=IL2),and that under the circumstance of limited field source power,the depth will be effectively controlled by loop area.This paper holds that the opinions of "big loop area makes large depth" and "small loop area makes shallow layer " are not correct in that they are the results of applying the depth formula without considering the premise condition.The author thinks that the TEMS exploration depth is decided by frequency parameter of the field source,that the lower the frequency,the larger the exploration depth,and that enough magnetic moment is required to produce high signal-to noise ratio in the measurement. |
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| Keywords: | exploration depth loop area field source frequency magnetic moment |
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