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https://doi.org/10.26516/2541-9641.2026.2.21

EDN: MFMHEI

Groundwater Oxidation-Reduction Potential Monitoring 2024–2026: Reduction of Piezoelectric Effects of Lake Baikal Ice Covers or Loss of Signal Reception Sensitivity?

S.V. Rasskazov^1,2, I.A. Aslamov³, S.V. Snopkov^2,4, E.P. Chebykin¹, A.M. Ilyasova¹

¹Institute of the Earth's Crust SB RAS, Irkutsk, Russia

²Irkutsk State University, Irkutsk, Russia

³Limnological Institute SB RAS, Irkutsk, Russia

⁴Irkutsk National Research Technical University, Irkutsk, Russia

Abstract. A comparative analysis of the oxidation-reduction potential (ORP) records of groundwater in the Kultuk area during the 2024, 2025, and 2026 Baikal freeze-ups was performed. Distinct piezoelectric effects were revealed in the ORP variations in January–March 2024, observed as regular ORP minima accompanying the deformations of the lake ice cover. During the January–April 2025 freeze-up, only rare ORP minima were revealed in the ORP records, and during the January–April 2026 freeze-up, two complications in the records associated with ice cover deformations were recorded: a sharp decrease in ORP values at the beginning (January 26) and a single deep minimum at the end (April 13). A dependence of ORP variations corresponding to the piezoelectric effects of ice on seismogenic deformations in the crust of the Baikal Rift System (BRS) and magnetic storms has been revealed, although the possibility of the disappearance of ORP minima in the records of 2025–2026 due to a violation of the sensitivity of signal reception by the sensor cannot be ruled out.

Keywords: groundwater, monitoring, redox potential, earthquakes, Baikal

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Rasskazov Sergei Vasilevich,

doctor of geological and mineralogical sciences, professor,

664025, Irkutsk, Lenin st., 3,

Irkutsk State University, Faculty of Geology,

Head of Dynamic Geology Char,

664033, Irkutsk, Lermontov str., 128,

Institute of the Earth's Crust SB RAS,

Head of the Laboratory for Isotopic and Geochronological Studies,

tel.: (3952) 51–16–59,

email: rassk@crust.irk.ru

 

Aslamov Ilya Aleksandrovich,

Candidate of physical and mathematical sciences,

664033, Irkutsk, Ulan-Batorskaya st., 3,

Limnological Institute SB RAS,

Head of laboratory of hydrology and hydrophysics,

email: ilya_aslamov@bk.ru

 

Snopkov Sergei Viktorovich,

Candidate of Geological and Mineralogical Sciences,

664025, Irkutsk, Lenin sr., 3,

Irkutsk State University, Faculty of Geology,

Associate Professor,

664074, Irkutsk, Kurchatov st., 3,

Siberian School of Geosciences, Irkutsk National Research Technical University,

Leading Researcher,

email: snopkov_serg@mail.ru.

 

Chebykin Eugene Pavlovich

Candidate of Chemical Sciences,

664033, Irkutsk, Lermontov st., 128,

Institute of the Earth's Crust SB RAS,

leading specialist,

email: epcheb@yandex.ru

 

Ilyasova Aigul Maratovna,

candidate of geological and mineralogical sciences,

664033, Irkutsk, Lermontov st., 128,

Institute of the Earth's Crust SB RAS,

leading engineer,

email: ila@crust.irk.ru

 

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