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在假定地震动物异常行为(SAAB)是对地震电信号(SES)的电生理反应的前提下,通过施加电场、实验再现了神户地震所报道的SAAB蚕及鱼的定向排列.由于垂直于电场时动物体内骨格肌的阻抗较平行时大,动物表现出沿垂直于电场方向排列的行为.基于偶极电荷±q源于地震应力σ(t)的变化,提出了一断层的电磁模型:dq/dt=-α(dσ/dt)-q/ερ,其中α是一表征电荷生成的常数,比如压电系数;ε为介电常数,ρ为花岗岩的电阻率.一长2a且位错或破裂时间为τ的断层,由于应力的变化将产生脉冲状的偶极电荷(面密度):+q(t,x)和-q(t,x+2a),或由地震矩M0而给出偶极矩P(t)=2aAq(t)=αM0[ερ/(τ-ερ)](e-t/z-e-t/ερ).断层位错D、位错速率D′和应力降Δσ满足τ=D/D′=(Δσ/σ0)(a/β).断层域的电场强度F及电流密度J可由F=q/ε及J=F/ρ′得到.若ρ′为水的电阻率,则可得到J=0.1~1A/m2,该值足以引起动物的异常行为.由P(t)所产生的近场甚低频(ULF)波可解释与距离R成反比的SES.
Based on the assumption that SAAB is an electrophysiological response to seismic electrical signals (SES), orientations of SAAB silkworms and fish reported by the Kobe earthquake are experimentally reproduced by applying electric fields. Since the impedance of skeletal muscle in animals is larger when parallel to the electric field, animals behave perpendicular to the electric field. Based on the variation of the dipole charge ± q from the seismic stress σ (t), we propose a fault electromagnetic model: dq / dt = -α (dσ / dt) -q / ερ, where α is a constant characterizing charge generation , Such as piezoelectric coefficient; ε is the dielectric constant, ρ is the resistivity of granite. A fault with a length of 2a and a dislocation or rupture time of τ will produce pulsed dipole charges (areal densities) due to stress changes: + q (t, x) and -q (t, x + 2a) M0 and gives the dipole moment P (t) = 2aAq (t) = αM0 [ερ / (τ-ερ)] (e-t / z-e-t / ερ). The fault dislocation D, the dislocation rate D ’and the stress drop Δσ satisfy τ = D / D’ = (Δσ / σ0) (a / β). The electric field strength F and current density J of the fault domain can be obtained from F = q / ε and J = F / ρ ’. If ρ ’is the resistivity of water, then J = 0.1 to 1 A / m2 is obtained, which is enough to cause abnormal behavior in animals. The near-field very low frequency (ULF) wave generated by P (t) can explain the SES that is inversely proportional to the distance R.