VARIATIONS OF PARAMETERS ELF-VLF NOISE AND VLF SIGNALS ON THE DEMETER SATELLITE OVER THE SEISMIC ACTIVITY REGION

摘要

Seismo electromagnetic effects in the upper ionosphere were examined during Kultuk earthquake 27.08.08 using data received by the DEMETER satellite. High intensity of the spectrum line on the daytime sonograms of NWC station (19.8 kHz) before the earthquake 27.08.08 (23.08.08 and 26.08.08) were detected. Decrease of the spectrum line intensity after the earthquakes on August 27th and 30th was registered. The computer program was written for quantitative analysis of sonograms, allowing to build spectra determining distance to a given sub-satellite point or time of flight of the satellite.