Hydrogeological Earthquake Precursors: A Case Study From the Kamchatka Peninsula

Kopylova, G.N.; Boldina, S.

Авторы: Kopylova G.N., Boldina Svetlana
Журнал: FRONTIERS IN EARTH SCIENCE
Том: 8
Год издания: 2020
Издательство: Frontiers Media S.A.
Местоположение издательства: Lausanne, Switzerland
Первая страница: 576017
DOI: 10.3389/feart.2020.576017
Аннотация: The relevance of hydrogeological precursors (HGPs) study is justified by the need to obtainreliable information about the spatio-temporal manifestations and the relationships ofHGPs with the parameters of subsequent earthquakes for seismic forecasting. In thereview the data on repeated manifestations of HGPs before strong earthquakes obtainedfrom long-term observations in five deep wells on the Kamchatka Peninsula (Far East ofRussia) are presented. The analysis of the correlation of HGPs occurring in several wells iscarried out in comparison with earthquake parameters characterizing both earthquakesources (magnitude, linear size of the source) and the impact of earthquakes in the area ofwells (specific energy density in wave, intensity of shaking). It is shown that themanifestation of HGPs in several wells is observed before earthquakes with Mw 6.6–7.8 at epicentral distances up to the first hundreds of km to observation wells inthe near and intermediate zones of the sources with the ratio of the epicentral distancesand the source sizes no more than 1–5. A feature of our study was the use of certain typesof HGPs in water-level changes for predictive assessments of the strong earthquakes inthe Kamchatka Peninsula. The review presents precursors in water-level changesdetected in real time and the corresponding earthquake forecasts, which wererecognized as successful according to the conclusions of the expert council onearthquake prediction.
Добавил в систему: Болдина Светлана Васильевна

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