基于LAIC电场渗透和SAMI2模拟的地震-电离层扰动现象研究

Abstract

Abstract: We explored the influence of the electric field generated by the earthquake on the electron density in the ionosphere based on the three-dimensional electric field penetration model and SAMI2 model. Simulation results show that additional currents formed before an earthquake can cause abnormal electric field in the ionosphere, and its value is significantly related to the earthquake magnitude and the occurrence time of the earthquake. Moreover, the electric field will cause the disturbance of the electron density by E×B drift. As time goes by, the electron density perturbation decreases and the perturbed region is shifted toward the direction of the magnetic equator or far away from the magnetic equator.

Key words: Abnormal ionospheric electric field, Earthquake precursor, E×B drift, Electron density perturbation

CLC Number:

P315.7

LIU Yi, ZHOU Chen, ZHAO Zheng-yu, ZHAO Shu-fan, ZHANG Xue-min, KONG Jian. Seismo-ionospheric Disturbance Based on LAIC Electric Field Penetration and SAMI2 Simulation[J]. EARTHQUAKE, 2018, 38(1): 74-83.

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Seismo-ionospheric Disturbance Based on LAIC Electric Field Penetration and SAMI2 Simulation

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