Algorithm for modeling electromagnetic channel of seismo-ionospheric coupling (SIC) and the variations in the electron concentration

Acta Geophysica

article

Rapoport, Yuriy¹  Grimalsky, Vladimir⁴  Krankowski, Andrzej²  Pulinets, Sergey²  Fedorenko, Alla³  Petrishchevskii, Sergei¹ 

[1] Physical Faculty, Taras Shevchenko National University of Kyiv;Diagnostics Research Centre, University of Warmia and Mazury in Olsztyn;Space Research Institute National Academy of Sciences of Ukraine and State Space Agency of Ukraine;Autonomous University of State Morelos (UAEM);Space Research Institute of RAS (IKI RAS)

关键词: Quasi-stationary;    Electron concentration;    Seismo-ionospheric coupling;    TEC;    ULF;   

DOI  :  10.1007/s11600-019-00385-0

学科分类：地球科学(综合)

来源: Polska Akademia Nauk * Instytut Geofizyki

【 摘 要 】

We present in detail the algorithm of the electrostatic–quasi-stationary–electromagnetic/MHD approximations and equivalent external sources (EQUEMES method) to develop the quasi-stationary–electromagnetic models of seismo-ionospheric coupling. The penetration of the electromagnetic field created by near-Earth alternative currents of ULF range was simulated by solving equations for the horizontal electric field components Ex, Ey of the second order with respect to the vertical coordinate z. This system of two second-order equations is derived from the system of Maxwell equations. The penetration of rather strong horizontal electric field [of order of (1–10) mV/m] to the ionospheric E and F layers has been modeled. The corresponding variations in the electron concentration in the E and lower F layers of the ionosphere reach a value of order of (1–10)%. Farther increase in these variations can be connected with the related synergetic processes. A possibility of the effective initiation of electron concentration perturbations in the unstable near-equatorial plasma in the F layer of the ionosphere by the packet of atmospheric gravity waves radiated by the near-ground source is illustrated. A good correspondence of the results obtained on the basis of this model to the data of satellite observations is shown.

【 授权许可】

Unknown