Seismic instruments: article

Features of parameter variations in subsurface radon field at “Paratunka” station of Petropavlovsk-Kamchatsky geodynamical test site in 2011-2016
P. Firstov
E. Makarov
I. Glukhova
Kamchatka Branch of the Federal Research Center “United Geophysical Service RAS”, Petropavlovsk-Kamchatsky, Russia
Journal: Seismic instruments
Tome: 53
Number: 2
Year: 2017
Pages: 5-22
UDK: 550.343.6
DOI: 10.21455/si2017.2-1
Keywords: radon flux density, volumetric activity of radon, meteorological parameters, earthquake precursors, seismic oscillations
Аnnotation: A network of stations for monitoring subsoil radon is in operation at the Petropavlovsk-Kamchatsky geodynamic testing area and is aimed at detecting strong earthquake precursors. At all the stations measurements are carried out using gas-discharge counters located at different depths within aeration zones of soft sediments. Volume activity of radon (VA Rn) is monitored at the most equipped station “Paratunka” (PRT) at three measurement sites located across the regional fault. Radon flux density (RFD) is measured from the surface. The article reviews responses in the dynamics of VA Rn and the RFD from the surface at PRT station prior to Kamchatka earthquakes with magnitudes М