The study results for the ionospehric processes over Kamchatka by radiotomography, GPS-radio interferometry and vertical radiosonding.

Preliminary results of simultaneous observations of the ionosphere state by radiotomography, GPS radio interferometry and vertical radiosonding are presented. Observations were carried out in moderate and disturbed geomagnetic conditions during a year. Based on the data obtained using a chain of tomographic stations installed in the meridional direction of Kamchatka Peninsula, as well as data from the Kamchatka regional network of GPS stations, moving ionospheric disturbances (IRR) with an amplitude of up to 1.5 TESU (1 TESU= 1016 electrons/m2) with periods of about 60 minutes were detected during the periods under consideration. They moved mainly in the equatorial direction with the velocities from several tens of meters to ~1,500 m/s. The moments of corpuscular precipitation of charged particles were determined by vertical radiosonding methods, and for that time, the meridional section of the electron distribution corresponding to the foF2 critical frequency was determined by vertical tomography methods. An attempt was made to isolate the heights of increased electron concentration corresponding to corpuscular layers by the methods of wavelet analysis. The results obtained make it possible to say that further research is challenging.

Bogdanov V.V., Zhivetyev I.L. Results of the study of processes in the ionosphere over Kamchatka using radiotomography, GPS radio interferometry and vertical radiosonding.\\History of science and technology. 2017. No. 8. pp. 44-50. Russia, Moscow