Using the eIectron-hoIe theory to estimate the “energy”magnitude reIated to the eIectromagnetic abnormities before the Wenchuan MS8.0 earthquake
Li Mei
Tan Handong
Wang Zhongping
Zhang Xiaotao
Cao Meng
Abstract：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 MS 8.0 earthquake.During the process,we set the largest hori-zontal 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 10 6 —107 C 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 108 C and 10 9 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 1 000 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.
Keywords：Wenchuan earthquakeelectromagnetic abnormityelectron-hole theoryenergy magnitude
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：11( 842-852 )