| 均匀大地上空的时间域电磁响应 |
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| 引用本文： | 朴化荣,沙树琴,王延良.均匀大地上空的时间域电磁响应[J].地球物理学报,1980,23(2):207-218. |
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| 作者姓名： | 朴化荣 沙树琴 王延良 |
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| 作者单位： | 长春地质学院 |
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| 摘 要： | 为了脉冲式航空电磁法的应用,本文介绍了均匀大地上空的时间域电磁响应。用傅里叶变换由频率域公式导出了时间域的响应公式。然后以国产脉冲式航电系统的参数计算了二次场的水平分量和垂直分量。根据时间域的计算结果,本文给出了一些解释的图件,可以用来解决两个主要问题。其一是解释在不同飞行高度测得的时间域航空电磁法资料,从而提供大地电阻率;其二是如果给出了大地电阻率,则可计算时间域的航空电磁响应,因此可以校正由飞行高度改变引起的假异常。
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| 关 键 词： | 电磁响应 二次磁场 时间域 电阻率 飞行高度 接收线圈 发射线圈 水平分量 航电系统 垂直分量 |
| 收稿时间： | 1978-12-24 |
TIME DOMAIN ELECTROMAGNETIC RESPONSE ABOVE THE SURFACE OF A HOMOGENEOUS EARTH |
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| Piao Hua-rong,Sha Shu-qin,Wang Yan-liang.TIME DOMAIN ELECTROMAGNETIC RESPONSE ABOVE THE SURFACE OF A HOMOGENEOUS EARTH[J].Chinese Journal of Geophysics,1980,23(2):207-218. |
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| Authors: | Piao Hua-rong Sha Shu-qin Wang Yan-liang |
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| Affiliation: | Changchun Geological Institute |
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| Abstract: | This paper describes the time-domain electromagnetic response above the surface of a homogeneous earth for the application of the impulse type airborne electromagnetic method. The formulations of the response are developed from the those of the frequence-domain by the Fourier transform. Both the horizontal and the vertical component of the secondary field were computed with the parameters of the home-made impulse type airborne electromagnetic system. According to the computer results of the time-domain, the diagrames of interpretation are presented in this paper. It can be used to solve two major problems. The first is to interpret the time-domain airborne electromagnetic data measured at different flying altitude so that the earth resistivity will be provided. The second is to estimate the time-domain airborne E. M. response, if the earth resistivity is given; therefore the pseudo-anomalies caused by the change of the flying altitude will be corrected. |
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