At the complex geophysical observation site in the village of Petropavlovskoye, testing of the CME-6111 broadband molecular-electron seismometer, installed as part of the Russian Foundation for Basic Research (RFBR) project “Study of trigger deformation effects based on the data on Sakhalin’s seismicity using a new type of seismic sensors” was continued. The results of processing waveform records and seismic noise of the CME-6111 seismometer installed in the seismic camera in the village of Petropavlovskoye during the period of little snow in the winter of 2018-2019 and in conditions of a large amount of snow cover in the winter of 2021-2022 were compared in order to determine the energy characteristics of the seismic events that occurred. The results of testing in 2018-2019 allowed the authors to make an assumption about the effect of low temperatures on the amplitude-frequency characteristics of the CME-6111 molecularelectronic seismometer, which was expressed in an overestimation of the energy characteristics of seismic events based on the results of processing of the seismometer waveform records. The large amount of snow cover in the winter of 2021-2022 showed that the stabilization of the temperature of the subsoil led to the stabilization of the seismometer parameters. Additionally, an analysis was made of the level of the power spectral density of seismic noise for both winter periods. For the period 2018-2019 there is an excess of the New High Noise Model (NHNM) at low frequencies for horizontal channels and for the winter of 2021-2022 there are no such violations due to the significant amount of snow cover that compensates for the influence of interference, which has a positive effect on stability performance of the instrument itself and improve the quality of seismic data.

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Experience and features of the operation of the molecular-electronic seismometer on Sakhalin Island

Regional Magnitude Mwa in the Russian Far East

The main stages of creation and development of a seismic monitoring network of the Sakhalin Division GS RAS are considered. The main types of seismic data recording equipment used in the Sakhalin Division GS RAS are listed. The structure of the seismological data collection system of the Sakhalin Division GS RAS and its components are presented. The concept of creation and operation of autonomous points of instrumental seismic observations, as the main element of the development of a system for collecting seismological data, is proposed. The implementation of autonomous points of instrumental seismic observations is shown in detail on the example of the creation of emergency rescue centers for monitoring and forecasting emergency situations on the Kuril Islands of the EMERCOM of Russia in the Sakhalin Region. An assessment of the current state of the system for collecting seismological data in the Sakhalin Division GS RAS and its registration capabilities is given. The significance of the system for collecting seismological data of the Sakhalin Division GS RAS as a part of the large-scale research facilities of the GS RAS - a complex of continuous seismic monitoring of the Russian Federation, adjacent territories, and the world

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Dmitry Kostylev

Papers

Formation of a unified system for collecting seismological information in the Sakhalin Division GS RAS