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Hydrogeological Responses of Fluid-Saturated Collectors to Remote Earthquakes

  • Автор: Gorbunova E.M., Batukhtin I.V., Besedina A.N., Petukhova S.M.
  • Издательство: Processes in GeoMedia—Volume IV, Springer Geology

  Reaction of confined and unconfined aquifers to propagation of seismic waves from distant earthquakes registered on the territory of geophysical observatory IDG RAS “Mikhnevo” is considered as dynamic deformation regime indicator. The reference point of measurements is located to the South of Moscow at the 80 km distance within the East–European platform. Based on the results of precision monitoring of groundwater levels, carried out from 2010 to 2018, database of seismic and hydrogeological data is formed, which includes registration of responses to 61 earthquakes with MW 6.3–9.1 at epicentral distances in the range between 1863 and 16,507 km. On the basis of spectral analysis of a sample of experimental data series with duration of 6 h (3 h before and 3 h after the earthquake) the principal features of fluid–saturated reservoir reaction to seismic waves propagation and types of hydrogeological effects have been determined. In some cases the relative deformation of fluid saturated reservoir reaches (1.59–5.95)x10–7 at maximum amplitude of ground velocity 1.01–3.78 mm/s and exceeds by one or two orders of magnitude calculated poroelastic deformation of reservoir from tidal waves. 

Gorbunova, E.M., Batukhtin, I.V., Besedina, A.N., Petukhova, S.M. (2022). Hydrogeological Responses of Fluid-Saturated Collectors to Remote Earthquakes. In: Chaplina, T. (eds) Processes in GeoMedia—Volume IV. Springer Geology. Springer, Cham.

https://doi.org/10.1007/978-3-030-76328-2_22