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Izvestiya, Physics of the Solid Earth, 2015, Issue 4, Pages 148–157 (Mi phz1)  

Results of vertical electric field monitoring in Lake Baikal

S. M. Korotaeva, N. M. Budnevb, V. O. Serdyuka, V. L. Zurbanovb, R. R. Mirgazovb, V. A. Machinina, E. O. Kiktenkoa, V. B. Buzinc, A. V. Novysha, I. A. Portyanskayab

a Geoelectromagnetic Research Centre of the Institute of Physics of the Earth, Russian Academy of Sciences, Troitsk, Moscow, 142190 Russia
b Applied Physics Institute, Irkutsk State University, bulv. Gagarina 20, Irkutsk, 664003 Russia
c Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation, Russian Academy of Sciences, Troitsk, Moscow, 142190 Russia

Abstract: The electric field of the hydrosphere can be used for monitoring various geophysical processes. Practical implementation of such monitoring requires sufficiently reliable measurements of the field and separation of the contributions from different sources. The present work endeavors to successively solve these tasks in the scope of the experiment on monitoring the vertical voltage in Lake Baikal. Similar monitoring has been conducted previously; however, insufficient reliability of the measurements limited the progress in data interpretation. Since then, we have designed a new instrumental complex, capable of highly accurate measurements and controlling the potential noise sources. For the first time, the flow-induced field is compared with the direct flow velocity measurements. The first results show the flow-induced field is predominant at periods of up to ten days. However, this analysis leaves unclear the origin of variations with a period of about 100 days.

Funding Agency Grant Number
Ministry of Education and Science of the Russian Federation
Russian Foundation for Basic Research 12-05-00001
12-05-98009
12-02-10000
The work was supported by the Targeted Federal Program “Academic and Educational Staff of Innovative Russia for 2009–2013,” NOTs Baikal, and the Russian Foundation for Basic Research (grants 12-05-00001, 12-05-98009, and 12-02-10000).


DOI: https://doi.org/10.7868/S0002333715040043


English version:
Izvestiya, Physics of the Solid Earth, 2015, 51:4, 602–611

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Document Type: Article

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