| 频率域航空电磁法一维正演与探测深度 |
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| 引用本文： | 朱凯光,林君,刘长胜,周逢道.频率域航空电磁法一维正演与探测深度[J].地球物理学进展,2008,23(6):1943-1946. |
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| 作者姓名： | 朱凯光 林君 刘长胜 周逢道 |
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| 作者单位： | 吉林大学仪器科学与电气工程学院,地球信息探测仪器教育部重点实验室,长春130026 |
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| 摘 要： | 计算了偶极一偶极方式均匀半空间的频率域航空电磁响应及层状模型的相对异常响应，阐明了大地电导率、磁化系数，以及飞机飞行高度、探测装置、收发距对电磁响应的影响，计算结果说明了频率域航空电磁法的探测能力和探测条件．分析了三层模型的相对异常响应，给出了基于层状模型确定探测深度的方法．在水平共面方式下，收发距8m，飞行高度30m时，在3～4ppm噪声水平条件下，100Ωm大地探测深度为120m．
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| 关 键 词： | 频率域航空电磁法 一维正演 均匀半空间模型 层状模型 探测深度 |
| 收稿时间： | 2007-12-20 |
| 修稿时间： | 2008-3-28 |
One-dimensional forwand and prospecting depth for airborne frequency domain electromagnetic method |
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| ZHU Kai-guang,LIN Jun,LIU Chang-sheng,ZHOU Fenf-dao.One-dimensional forwand and prospecting depth for airborne frequency domain electromagnetic method[J].Progress in Geophysics,2008,23(6):1943-1946. |
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| Authors: | ZHU Kai-guang LIN Jun LIU Chang-sheng ZHOU Fenf-dao |
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| Institution: | (KeyLaboratoryofGeo-explorationInstrumentationoftheMinistryofEducation,CollegeofInstrumentationJilinUniversityandElectricalEngineering,Changchun130026,China) |
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| Abstract: | The airborne frequency domain electromagnetic responses and relative anomalies are computed for half space model using EM1DFM. The results show how the conductivity, susceptibility, flight height, configuration and separation influence the electromagnetic response, and imply the prospecting ability and condition of the airborne frequency domain electromagnetic method. This paper also puts forward a way to determine the prospecting depth by the 3-layer model. The prospecting depth will achieve 120 m for horizontal coplanar with the transmitter and receiver separation of 8 m, and flight height of 30m and noise level of 3~4 ppm. |
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| Keywords: | airborne frequency domain electromagnetic method one dimension forward half space model layered model prospecting depth |
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