EGU2020-22053, updated on 12 Jun 2020
https://doi.org/10.5194/egusphere-egu2020-22053
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Ruskeala underground laboratory for the study of natural waters (Karelia, Russia)

Galina Borodulina
Galina Borodulina
  • Northern Water Problems Institute Karelian Research Center RAS, Petrozavodsk, Russian Federation (bor6805@yandex.ru)

Ruskeala underground laboratory was organized jointly by the Karelian Research Center of the Russian Academy of Sciences (KarRC RAS) and Kolmas Karelia company as an experimental innovative facility for the study of underground spaces. KarRC RAS is a partner in the Baltic Sea Underground Innovation Network (BSUIN) project of the Interreg Baltic Sea Region Programme. Ruskeala quarries can act as a showcase of the transformation of the chemical composition of groundwater formed in Proterozoic calcareous rocks of the Fennoscandian Shield and exposed by open mining. Drillholes reveal weakly alkaline fresh (0.4 g/l) bicarbonate calcium-magnesium groundwater, which, when discharged in quarries, loses dissolved gases (CO2, He, Rn), becomes more alkaline and fresher due to atmospheric precipitation. Since the biota in the man-made reservoirs is poor, nitrates, as the final product of the transformation of nitrogen compounds brought in by surface runoff, can accumulate in the quarry water. The mine network provides a unique opportunity for studying the hydrodynamics and geochemistry of groundwater and its interaction with surface waters.

The study was supported by BSUIN project of the Interreg Baltic Sea Region Programme

How to cite: Borodulina, G.: Ruskeala underground laboratory for the study of natural waters (Karelia, Russia), EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-22053, https://doi.org/10.5194/egusphere-egu2020-22053, 2020

This abstract will not be presented.

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Display material version 1 – uploaded on 28 Apr 2020
  • CC1: Comment on EGU2020-22053, Katarzyna Szkliniarz, 28 May 2020

    Dear Galina,

    Did you study content of radioactive isotopes in water samples?

    • AC1: Reply to CC1, Galina Borodulina, 28 May 2020
      Dear Katarzyna
      Thank you for your interest in the presentation.
       
      We determined Rn222 in water. Northern Ladoga is one of the radonanomalous regions of Karelia. The content of Rn222 in quarry samples did not exceed 7 Bq / L or was below the detection limit. This is typical for surface water, but in groundwater the Rn222 concentration reached: in the spring 90 Bq / l, in the well 1516 ± 455 Bq / l.
       
      with respect
      Galina Borodulina