Volkov V.A., Dubrov M.N., Mrlina J., Polak V. Investigation of seismic activity by means of spaced tide-recording systems. In: 19th International Symposium on Geodynamics and Earth Tides, Abstract book, 22–26 June, 2021, Wuhan, China , Innovation Academy for Precision Measurement Science and Technology (APM) et al, China , р. 32.
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Аннотация
Abstract: Instruments with high stability and sensitivity in wide frequency band are needed for recording lithosphere deformations induced by large seismic events and other dangerous natural phenomena including global atmosphere disturbances. Only the instruments being able to record the Earth tides satisfy the formulated requirements. Our previous investigations evidently show that synchronous observation of global atmosphere and lithosphere disturbances by means of precise and spatially distributed instruments is the effective method of detecting precursors of large seismic events and global atmosphere disturbances. This study covers the spatial range from regional to global seismic and atmospheric disturbances. The subjects of presented investigations are: 1) analysis of non-tidal strain-baric and tilt-baric processes recorded by system of ground-based laser interferometers-strainmeters within the Moscow Syneclise (Obninsk, Fryazino) together with synchronously operating tiltmeter instruments of deep underground installations in the Bohemian Massif (Skalna, Jezeri, Pribram); 2) search of correlations between laser interferometers data and distant tiltmeters data before strong earthquakes. The goal is to distinguish the local, regional and global variations corresponding to abnormal pre-seismic and co-seismic processes. Our first substantial experience in this field was the definition of statistically significant value of global coupling of strain-baric anomalies detected by means of distant instruments using the Pearson's correlation technique. The other attempt to detect the strain-baric and tilt-baric coupling at the regional level was based on the comparison of laser interferometer-strainmeter data in Obninsk with tilts recorded in Jezeri Observatory. This revealed the Pearson correlation coefficient R=0.92 which means a profound correlation. This kind of data processing was applied for periods of strong earthquakes in time intervals 2015-2020. The obtained results were compared with our previous investigation. Abstract book: http://pan.cstcloud.cn/s/X8CfGQvQgU
| Тип объекта: | Доклад на конференции или семинаре (Постер) |
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| Авторы на русском. ОБЯЗАТЕЛЬНО ДЛЯ АНГЛОЯЗЫЧНЫХ ПУБЛИКАЦИЙ!: | Волков В.А., Дубров М.Н., Мрлина Я., Полак В. |
| Подразделения (можно выбрать несколько, удерживая Ctrl): | 139 лаб. оптических волноводных систем |
| URI: | http://cplire.ru:8080/id/eprint/8900 |
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