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Using the electron-hole theory to estimate the "energy" magnitude related to the electromagnetic abnormities before the Wenchuan Ms8.0 earthquake

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Authors:Li Mei; Tan Handong; Wang Zhongping; Zhang Xiaotao; Cao Meng
Author Affiliations:Primary:
China Earthquake Networks Center, Beijing, China
Other:
China University of Geosciences, China
Volume Title:Dizhen Xuebao Acta Seismologica Sinica
Source:Dizhen Xuebao = Acta Seismologica Sinica, 37(5), p.842-852. Publisher: Kexue Chubanshe, Beijing, China. ISSN: 0253-3782
Publication Date:2015
Note:In Chinese with English summary. 29 refs.
Summary:On the base of the electron-hole theory stated by Freund et al, this paper attempts to deduce and interpret the energy of the obvious lithosphere-atmosphere-ionosphere coupling observed on May 9, 2008, three days before the Wenchuan MS8.0 earthquake. During the process, we set the largest horizontal principal stress and the earthquake plate area of the main fault. The simulation results show, during the period of the micro-cracks developing into the macro-cracks before the main rupture occurs, the total surface charge range of the main fault falls in 106-107C and the related upward electric field, which is perpendicular to the interface between the Earth surface and the atmosphere, is 107-108 V/m. The corresponding parameters are up to 108C and 109 V/m when the main rupture happens, and the output current is up to 105 A in order. On one hand, the electric field increasing in the interface between the Earth surface and the atmosphere, can cause electromagnetic parameter abnormities of the ground-based observation, with the range beyond 1000 km; on the other hand, it can accumulate air ionization above pre-earthquake zone, leading to ionospheric parameters short-time sudden changes recorded by some spatial seismic monitoring satellites.
Subjects:Cracks; Earthquake prediction; Earthquakes; Electromagnetic anomalies; Electromagnetic field; Magnitude; Microcracks; Precursors; Theoretical studies; Wenchuan earthquake 2008; Asia; China; Far East; Sichuan China; Wenchuan China
Coordinates:N311323 N311323 E1031948 E1031948
Record ID:790142-12
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute.
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