Geodesic
Investigation of the influence of seismic activity on the semi transparency coefficient of the sporadic es layer over kamchatka
Vestnik KRAUNC. Fiziko-matematičeskie nauki, Tome 33 (2020) no. 4, pp. 157-165

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Small-scale turbulization of the sporadic Es layer (tens of meters) is estimated by the semi transparency coefficient $\Delta$f bEs, and large-scale turbulization (hundreds of meters) is expressed in Es scattering. It is known that before large earthquakes with magnitudes M\ge 5.0, the formation of abnormal sporadic layers in the E region can be observed: an increase in the electron concentration and semi transparency coefficient at the interval from 14 to 3 days before the earthquake and a subsequent sharp decrease in the values of these parameters 1 day before the earthquake. This paper analyzes changes in the semi transparency coefficient of the sporadic Es layer preceding the onset of earthquakes with a magnitude M\ge 5.0 that occurred in the Kamchatka region during the period 2015–2019. The prognostic efficiency of the parameter $\Delta$f bEs was evaluated using the methods of A. A. Gusev and G. M. Molchan.
Keywords: ionosphere, lithosphere, vertical radio sounding, earthquake, earthquake precursor. 
@article{VKAM_2020_33_4_a13,
     author = {V. V. Bogdanov and A. V. Pavlov},
     title = {Investigation of the influence of seismic activity on the semi transparency coefficient of the sporadic es layer over kamchatka},
     journal = {Vestnik KRAUNC. Fiziko-matemati\v{c}eskie nauki},
     pages = {157--165},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VKAM_2020_33_4_a13/}
}
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V. V. Bogdanov; A. V. Pavlov. Investigation of the influence of seismic activity on the semi transparency coefficient of the sporadic es layer over kamchatka. Vestnik KRAUNC. Fiziko-matematičeskie nauki, Tome 33 (2020) no. 4, pp. 157-165. http://geodesic.mathdoc.fr/item/VKAM_2020_33_4_a13/