E.P. Chebykin1,2, A.M. Ilyasova1, S.V. Snopkov3, S.V. Rasskazov1,3
1Institute of the Earth's Crust SB RAS, Irkutsk, Russia
2Limnological Institute SB RAS, Irkutsk, Russia
3Irkutsk State University, Irkutsk, Russia
Chebykin Evgeny Pavlovich,
Candidate of Chemical Sciences, Senior Researcher,
664033 Irkutsk, Lermontov str., 128,
Institute of the Earth's Crust SB RAS,
664033 Irkutsk, Ulaanbaatarskaya str., 3,
Limnological Institute SB RAS, email: epcheb@yandex.ru.
Ilyasova Aigul Maratovna,
Candidate of Geological and Mineralogical Sciences, Leading Engineer,
664033 Irkutsk, Lermontov str., 128,
Institute of the Earth's Crust SB RAS,
email: ila@crust.irk.ru.
Snopkov Sergey Viktorovich,
Candidate of Geological and Mineralogical Sciences, Associate Professor,
664003 Irkutsk, Lenin str., 3,
Irkutsk State University, Faculty of Geology,
email: snopkov_serg@mail.ru.
Rasskazov Sergey Vasilyevich,
Doctor of Geological and Mineralogical Sciences, Professor, Head of the Laboratory,
664033 Irkutsk, Lermontov str., 128,
Institute of the Earth's Crust SB RAS,
664003 Irkutsk, Lenin str., 3,
Irkutsk State University, Faculty of Geology,
Head of the Department,
email: rassk@crust.irk.ru.
Abstract.From 5-year monitoring of groundwater in the Kultuk area, long-period (about 2.5 years) and short-period (months) variations in mercury concentration have been established. Long-period variations are associated with the preparation and implementation of the Baikal-Khubsugul seismic reactivation; short-period ones – directly with earthquakes. Mercury concentrations was low in groundwater in 2015, when seismogenic deformations developed in a state of crustal compression, and generally increased to 2020–2021, when seismogenic deformations occurred under extention. The course of the seismic process was reflected in a successive change in mercury/redox potential rеlationship in groundwater. It is proposed that the anomalous behavior of mercury during seismic activity resulted in increasing its concentration in the sedimentary layers of the second half of the 18th century through the present.
Keywords: Baikal, earthquakes, precursors of earthquakes, groundwater, hydrogeochemical monitoring, mercury.
Vilor N.V., Adrulaitis L.D., Zarubina O.V., Danilov B.S. Geochemistry of seismically active regional faults (Baikal Rift Zone, Eastern Siberia) // Geochemistry. 2015. No. 1. P. 64–82.
Grebenshchikova V.I., Kuzmin M.I., Klyuchevsky A.V., Demyanovich V.M., Klyuchevskaya A.A. Elevated mercury content in water from the Angara River output: responses to geodynamic impacts and strong earthquakes // Doklady Earth Science. 2020, vol. 491, No. 2, P. 77–81.
Kitaev N.A., Grebenshchikova V.I., Lustenberg E.E., Lomonosov I.S., Koval P.V. Mercury in the environment of the Southern Baikal region // Geoecology, engineering geology, hydrogeology, geocryology. 2008. No. 6. P. 517–530.
Koval P.V., Udodov Yu.N., Andrulaitis L.D., Sankov V.A., Gapov A.E. Mercury in water from the Angara River output: a five-year trend in concentration and possible causes of its variations // Doklady Earth Science. 2003. T. 389. No. 2. P. 235–238.
Koval P.V., Udodov Yu.N., Sankov A.V., Yasenovsky A.A., Andrulaitis L.D. Geochemical activity of faults of the Baikal rift zone // Doklady Earth Science. 2006. T. 409. No. 3. P. 389–393.
Melnikova V.I., Gileva N.A., Arefiev S.S., Bykova V.V., Masalsky O.K. The Kultuk earthquake of 2008 with Mw = 6.3 in the south of Baikal: spatial-temporal analysis of seismic reactivation // Physics of the Earth. 2012. No. 11. P. 44–62.
Rasskazov S.V., Makarov S.A. On the evolution of the tense state in the upper part of the earth's crust of the Baikal region in the Holocene // Geological environment and seismic process. Proceedings of the All-Russian Interregional Conference. Irkutsk, 1997. P. 33–35.
Rasskazov S.V., Chebykin E.P., Ilyasova A.M., Vodneva E.N., Chuvashova I.S., Bornyakov S.A., Seminsky A.K., Snopkov S.V., Chechelnitsky V.V., Gileva N.A. Development of the Kultuk seismoprognostic polygon: variations (234U/238U) and 87Sr/86Sr in groundwater from active faults of the western coast of the Baikal // Geodynamics and Tectonophysics. 2015. Vol. 6, No. 4. P. 519–554.
Chebykin E.P., Rasskazov S.V., Vodneva E.N., Ilyasova A.M., Chuvashova I.S., Bornyakov S.A., Seminsky A.K., Snopkov S.V. First results of 234U/238U monitoring in water from active faults of the western coast of South Baikal // Doklady Earth Science. 2015. Vol. 460, No. 4. P. 464–467. Yanin E.P. Mercury, man, environment (brief essay). IGEM RAN, 2020. 15 p.
Cicerone R.D., Ebel J.E., Britton J. A systematic compilation of earthquake precursors // Tectonophysics. 2009. V. 476. P. 371–396.
Crowley T.J., Zelinski G., Vinter B., Udisti R., Kreutz K., Cole-Dai J., Castelland E. Volcanism and the Little Ica Age // Pages News. 2008. V. 16, No. 2. P. 22–23.
http://www.seis-bykl.ru Baikal Branch of the Federal Research Center "Unified Geophysical Service of the Russian Academy of Sciences"
Rasskazov S., Ilyasova A., Bornyakov S., Chuvashova I., Chebykin E. Responses of a 234U/238U activity ratio in groundwater to earthquakes in the South Baikal Basin, Siberia // Front. Earth Sci. 2020. V. 14, No. 4. P. 711–737.
Rasskazov S., Chuvashova I., Yasnygina T., Saranina E., Gerasimov N., Ailow Y., Sun Y.-M. Tectonic generation of pseudotachylytes and volcanic rocks: Deep-seated magma sources of crust-mantle transition in the Baikal Rift System, Southern Siberia // Minerals. 2021. V. 11, No. 5. P. 487.
Roberts S., Adams J.K., Mackay A.W., Swann G.E.A., McGowan S., Rose N. L., Panizzo V., Yang H., Vologina E., Sturm M., Shchetnikov A.A. Mercury loading within the Selenga River Basin and Lake Baikal, Siberia // Environmental Pollution. 2020, V. 259. P. 113814.
Varshal, G.M., Sobolev, G.A., Barsukov, V.L., Koltsov, A.V., Kostin, B.I., Kudinova, T.F., Stakheyev, Y.I., Tretyakova, S.P. Separation of volatile components from rocks under mechanical loading as the source of hydrogeochemical anomalies preceding earthquakes // Pure Appl. Geophys., 1985. V. 122. P. 463–477.
Scholz C.A. Stratigraphic and structural evolution of the Selenga delta accommodation zone, Lake Baikal, Siberia / C. A. Scholz, D. R. Hutchinson // Int. J. Earth Sci.– 2000.– V. 89.– P. 212–228.
Chebykin E.P. Mercury signals of groundwater of the Kultuk area during the preparation and implementation of the Baikal-Khubsugul seismic reactivation in 2020–2021 [Electronic resource] / E.P. Chebykin, A.M. Ilyasova, S.V. Snopkov, S.V. Rasskazov
// Geology and Environment.— 2022.— V. 2, No. 1.— P. 7–19. DOI 10.26516/2541-9641.2022.1.7
Access Mode: http://geoenvir.ru/archive/g&e22-2-1/chebykin22-1.htm (31.03.2022).
P. 7–19