| 伴随地震波动的一种磁扰 |
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| 引用本文： | 王水,郭自强,林启锦. 伴随地震波动的一种磁扰[J]. 地球物理学报,1979,22(01): 78-83, |
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| 作者姓名： | 王水 郭自强 林启锦 |
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| 作者单位： | 中国科学技术大学 |
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| 摘 要： | 本文应用磁弹性波理论,提出伴随地震波传播的同时,地磁场将产生一个扰动。在电导率σ→∞的理想情况下,震源附近的磁场变化约几个伽玛的量级。对于有限电导率情况,这种磁扰仍然存在。
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| 关 键 词： | 磁扰 地震波动 磁弹性波 旋转波 速度场 电磁弹性 阻尼振荡 地磁场 有限电导率 地震波传播 |
| 收稿时间： | 1977-12-06 |
A GEOMAGNETIC DISTURBANCE ACCOMPANYING THE PROPAGATION OF SEISMIC WAVES |
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| WANG SHUI,GUO ZI-QIANG,LIN QI-JIN. A GEOMAGNETIC DISTURBANCE ACCOMPANYING THE PROPAGATION OF SEISMIC WAVES[J]. Chinese Journal of Geophysics (in Chinese),1979,22(01): 78-83, |
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| Authors: | WANG SHUI GUO ZI-QIANG LIN QI-JIN |
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| Affiliation: | University of Science and Technology of China |
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| Abstract: | Based on the theory of magneto-elastic waves,a geomagnetic disturbance accom-panying the propagation of seismic waves was studied. In the ideal case,when the con-ductivity of the crustal medium is infinite,magnetic field variation around the earthquake source is of the order of a few gammas. However,when the conductivity of the medium is finite such geomagnetic disturbance still exists. |
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