| 岩石磁化率各向异性的频散现象 |
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| 引用本文： | 贺绍英.岩石磁化率各向异性的频散现象[J].地球物理学报,1994,37(1):124-127. |
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| 作者姓名： | 贺绍英 |
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| 作者单位： | 地质矿产部华东石油地质局, 南京 210031 |
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| 摘 要： | 在磁化磁场为恒定磁场（无定向磁力仪─-Ａ）与１０ｋＨｚ交变磁场（ＭｉｎｉｓｅＰ旋转磁力仪─-Ｍ）的两种情况下，作岩样比测时发现，后者测得的主磁化率值кＭ较小，而且沿磁性叶理面方向ｆ的主磁化率值кｍａｘ与кｉｎｔ比沿其法线方向ｎ上的кｉｎｔ减少得更多．作者以涡流磁滞机构对磁性载体材料的“磁屏蔽”作用发生了各向异性的影响来解释此现象；并推测磁化率各向异性存在频散现象．
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| 关 键 词： | 磁化率各向异性 频散 磁滞 涡流 |
| 收稿时间： | 1992-09-21 |
THE DISPERSION PHENOMENON OF MAGNETIC SUSCEPTIBILTY ANISOTROPY OF ROCK |
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| HE SHAO-YING.THE DISPERSION PHENOMENON OF MAGNETIC SUSCEPTIBILTY ANISOTROPY OF ROCK[J].Chinese Journal of Geophysics,1994,37(1):124-127. |
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| Authors: | HE SHAO-YING |
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| Institution: | Bureau of Petroleum Geology East China, Nanjing 210031 |
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| Abstract: | It was found during the comparative measurement of rock specimen applied by steady (astatic magnetometer)and 10kHz alternating(Minisep spin magnetometer) weak magnetic field.The principal magnetic susceptibilities KM measured by the Minisep spin are smaller than k1 measured by the astatic,and the kM(Kmax and Kint)along the foliation plane f decrease more than that (kmin) along its normal line n does.In this paper,It is explained that is due to the eddy currents hysteresis mechanism which produce anisotropic magnetic shield effect on the magnetic.carrier;and the existence of the dispersion phenomenon of magnetic susceptibility anisotropy of rock is deduced. |
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| Keywords: | Magnetic susceptibilty anisotropy Dispersion Hysteresis Eddy current |
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