Electromagnetic Fault for Earthquake Lightning
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概要
- 論文の詳細を見る
A density of bound charges, q, which cancel piezoelectric polarization, appears at a fault zone upon the disappearance of piezoelectricity due to the release of seismic stress, σ. q is described as dq/dt = -αdσ/dt-q/ερ, where α, ε and ρ are the piezoelectric coefficient, the dielectric constant and the resistivity of the earth, respectively. A model of a fault with length 2a and displacement time τ gives q = [ασ_0ερτ(β/a)/(τ-ερ)](e^<-t/τ>-e^<-t/ερ>) using the velocity of s-waves, β and the stress along the fault plane, σ_0. The intensity of earthquake lightning (EQL) and its spatial distribution are calculated based on the excitation of molecules by electrons accelerated under an electric field using the assumed q, taking atmospheric polarization into account.
- 社団法人応用物理学会の論文
- 1996-03-01
著者
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Ikeya Motoji
Department Of Earth And Space Science Faculty Of Science Osaka University
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Takaki Shunji
Department Of Earth And Space Science Faculty Of Science Osaka University
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