DOI: 10.1029/2018JD028489
Scopus记录号: 2-s2.0-85052866153
论文题名: Earthquake Lights: Mechanism of Electrical Coupling of Earth's Crust to the Lower Atmosphere
作者: Jánský J. ; Pasko V.P.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 17 起始页码: 8901
结束页码: 8914
语种: 英语
英文摘要: Earthquake lights are an atmospheric luminous phenomenon occurring before, during, and occasionally after earthquakes. In the present work we assume that strong electric currents are produced inside the Earth during earthquakes and model the current and field distribution inside and above the Earth to find the conditions where electrical discharges can appear. The simulation results quantify the effects of various configurations of current dipoles inside the Earth. The results are supported by approximate formulations allowing effective solution of the same problems using an analytical theory. It is shown that a large-scale dipole with poles located in Earth's crust at 5 and 15 km beneath the Earth's surface requires energy significantly higher than the total seismic wave energy in major earthquakes. The more likely setup to produce earthquake lights is found to be when the upper pole of the source current dipole is shifted close to the Earth's surface, in particular, when locations of current dipoles are tens of meters beneath Earth's surface. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113192
Appears in Collections: 气候减缓与适应
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作者单位: Communications and Space Sciences Laboratory, Department of Electrical Engineering, School of Electrical Engineering and Computer Science, The Pennsylvania State University, University Park, PA, United States
Recommended Citation:
Jánský J.,Pasko V.P.. Earthquake Lights: Mechanism of Electrical Coupling of Earth's Crust to the Lower Atmosphere[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(17)