Seismic instruments: article

Technologies of preliminary data processing for multidisciplinary geophysical monitoring and their application experience in the Kamchatka geoacoustic observation system
V. Gavrilov1
A. Desherevskii2
E. Poltavtseva1
A. Sidorin2
1 Institute of Volcanology and Seismology FEB RAS, Petropavlovsk-Kamchatskii, Russia
2 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia
Journal: Seismic instruments
Tome: 52
Number: 4
Year: 2016
Pages: 57-75
UDK: 550.3 + 04.064.36+004.67
Keywords: geophysical monitoring, geoacoustic monitoring, preliminary data processing, data processing algorithms, automated procedures, expert screening, Petropavlovsk-Kamchatskii geodynamic research area
Аnnotation: The problems and procedures for obtaining high quality results of multidisciplinary geophysical monitoring at the stage of preliminary data processing are considered. The experience of solving different technical problems in the course of long term multidisciplinary borehole geophysical observations at the Petropavlovsk-Kamchatskii geodynamic research area is described. The algorithms for preliminary data processing and flawed data discard combining automated approaches and expert screening are developed by the authors. Suppression of quasi regular disturbances is especially important in the studies of interrelations between geoacoustic, electromagnetic, meteorological processes and seismicity because of the clear diurnal periodicity in all of the processes that significantly complicates the signal extraction from the noise. The key technical, organizational, and methodical measures aimed at improving the data should be provided in the project planning stage of the measurement system. The optimal selection and reasoned application of special procedures for data pre-processing can crucially affect the research results.