Bogdanov V.V., Kaisin A.V., Pavlov A.V., Polyukhova A.L., Dushkina S.M., Gasheva O.A. Anomalous behavior of ionospheric parameters before and after a series of earthquakes on 28.02–01.03.2013// Strong Kamchatka earthquakes of 2013 (coll.monograph) edited by V.N.Chebrov. P-Kamchatka. 2014. pp.127-136.

Anomalous behavior of ionospheric parameters before and after a series of earthquakes from 28 February to 1 March, 2013

The study of the problem of solar-terrestrial relations revealed direct relationship between solar activity and processes in the chain of geospheres "magnetosphere - ionosphere – lithosphere". However, there is also a feedback that determines the influence of lithospheric processes in seismically active regions on the ionosphere and magnetosphere. It can be said that at ionospheric heights and in the magnetosphere, there is a kind of mapping and averaging of the processes, occurring in the earth's crust on the areas hundreds of kilometers in size. In its turn, the ionosphere, in the general sequence of geospheric shells, is a sensitive sensor that can easily store and convert solar energy. Any small impacts on the ionosphere can lead to trigger effects with energy release, significantly exceeding the energy of primary disturbing factors of solar or lithospheric origin. Thus, the earth's crust forms a dynamic structure, reacts to the manifestations of solar activity and influences the physical processes, occurring in the upper geospheric shells. Moreover, each seismically active region is characterized by its informative features (anomalies) in the behavior of ionospheric parameters, which can be identified with earthquake precursors. Chapter 10 of the monograph is devoted to the study of the ionosphere reaction on the earth's crust final processes preceding the strong earthquakes of 28 February  and 1 March, 2013.