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Geomagnetism and Aeronomy, 2015, Volume 55, Issue 3, Pages 406–418 (Mi ga3)  

Recent results of monitoring of the vertical component of the electrical field in Lake Baikal on the surface-bed baseline

N. M. Budneva, S. M. Korotaevb, E. O. Kiktenkob, R. R. Mirgazovc, A. I. Panfilovd, V. O. Serdyukb, V. S. Shneerb, V. L. Zurbanovc, V. A. Machininb, V. B. Buzine

a Irkutsk State University
b Institute of Physics of the Earth, Russian Academy of Scienses
c Applied Physics Insitute, Irkutsk State University
d Institute for Nuclear Research, Russian Academy of Sciences, Moscow
e Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, Troitsk, Moskovskaya obl.

Abstract: The vertical component of the electrical field was monitored on the surface-bed baseline in the region of the Baikal Deep Underwater Neutrino Observatory from 2003 to 2010. This monitoring allowed us to obtain data on internal and external field sources. However, the insufficient accuracy and reliability of the measurement setup slowed the progress in interpreting the measurements. A novel setup, which was the first to provide the means to control the base potentials of electrodes, was designed in order to overcome these constraints. The setup in its final configuration started taking measurements in 2013. Analysis of the measurement results obtained in 2013 and 2014 does, on the one hand, confirm the conclusions drawn previously on the nature of variations of the vertical component of the electrical field, but, on the other hand, it raises new questions. The field induced by flows was compared to direct velocity measurements. The conclusion regarding the correlation between long-period current variations in the hydrosphere region of the global electric circuit and the solar activity variations was confirmed, but the considerable lag observed in this correlation stands in need of explanation. A nonlocal response of the electrode base potentials that preceded an impending earthquake by up to 12 days was revealed.

Funding Agency Grant Number
Ministry of Education and Science of the Russian Federation 2014/51
Russian Foundation for Basic Research 12-05-00001
14-05-04053
14-02-10003
13-02-10002
12-02-10000
The study was supported by the Ministry of Education and Science of the Russian Federation (government task no. 2014/51, Strategic Development Program of the Irkutsk State University) and the Russian Foundation for Basic Research, projects nos. 12-05-00001, 14-05-04053, 14-02-10003, 13-02-10002, and 12-02-10000.



English version:
Geomagnetism and Aeronomy, 2015, 55:3, 398–409

Bibliographic databases:

Document Type: Article
Received: 27.09.2014

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