Numerical model of the selectivity effect and the ΔV/L criterion

被引：88

作者：

Sarlis, N ^{[1
]}

Lazaridou, M ^{[1
]}

Kapiris, P ^{[1
]}

Varotsos, P ^{[1
]}

机构：

[1] Univ Athens, Solid Earth Phys Inst, Dept Phys, GR-15784 Athens, Greece

来源：

GEOPHYSICAL RESEARCH LETTERS | 1999年 / 26卷 / 21期

关键词：

D O I：

10.1029/1998GL005265

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Numerical solutions of Maxwell equations for a model earth with a reasonably conducting channel indicate that the electric field values are intensified within a certain region only(i.e., above the end of the channel), thus explaining the observed selectivity effect. In this region, the electric field may reach detectable values (5-10mV/km), while the magnetic field still remains low (10(-2)nT). The results are compatible with those obtained recently by analytical solutions (Varotsos et al. [1998]). Both the numerical and the analytical solutions lead to a natural explanation of the Delta V/L approximate to const criterion. This criterion, however, should not be applied over an area with strongly inhomogeneous electrical structure.

引用

页码：3245 / 3248

页数：4

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