NDLI: Regularities in the manifestation of earthquake precursors in the ionosphere and near-surface atmospheric electric fields in Kamchatka

Content Provider	Springer Nature Link
Author	Korsuva, L. P. Khegai, V. V. Mikhailov, Yu. M. Smirv, S. E.
Copyright Year	2013
Abstract	The data of hourly measurements of ionospheric parameters in Petropavlovsk-Kamchatsk are analyzed for the period 1998–2002. In the vertical component of near-surface atmospheric quasistatic electric field Ez, earthquake precursors in the form of anomalous negative bays have been found earlier. In some cases, anomalously high sporadic layer Es, interpreted as an ionospheric precursor of an earthquake, was observed simultaneously with anomalous negative bays in Ez. All these cases were correlated with earthquakes of different magnitudes which occurred with a significant time delay (more than five days) after the precursor appearance. Based on the whole data set (including those for simultaneously measured Es and Ez), empirical dependences linking the prediction time of a precursor, earthquake magnitudes, and the distance from the observation point to the epicenter, are presented. It is shown that these dependences are close to those obtained earlier for long-term earthquake precursors in near-surface geophysical fields of the same seismoactive region. Estimates of the prediction time for earthquake precursors on the boundaries of preparation zones are presented.
Starting Page	227
Ending Page	233
Page Count	7
File Format	PDF
ISSN	00167932
Journal	Geomagnetism and Aeronomy
Volume Number	53
Issue Number	2
e-ISSN	1555645X
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2013-03-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Geophysics Space and Planetary Science

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Experimental evidence of the correlation between possible precursors of earthquakes in near-surface quasistatic electric fields and in the ionosphere

Calculation of atmospheric electric fields penetrating from the ionosphere

Spectra of atmospheric waves in the dynamo region of the ionosphere at Kamchatka

Penetration of electric field from the near ground atmospheric layer to the ionosphere

Effects of thunderstorm activity in power spectra of the electric field in the near-surface atmosphere at Kamchatka

Electric and electromagnetic processes in the near-Earth atmosphere before earthquakes on Kamchatka

Earthquake responses in the high-latitude ionosphere

Influence of the atmospheric surface layer on the penetration of the electric field from the earth’s surface into the ionosphere

Short-circuit in the magnetosphere-ionosphere electric circuit

Regularities in the manifestation of earthquake precursors in the ionosphere and near-surface atmospheric electric fields in Kamchatka

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Experimental evidence of the correlation between possible precursors of earthquakes in near-surface quasistatic electric fields and in the ionosphere

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Penetration of electric field from the near ground atmospheric layer to the ionosphere

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Regularities in the manifestation of earthquake precursors in the ionosphere and near-surface atmospheric electric fields in Kamchatka