Small-scale plasma inhomogeneities and correlated ELF emissions in the ionosphere over an earthquake region

Chmyrev, V. M.; Isaev, N. K.; Serebryakova, O. N.; Сорокин, В. М.; Sobolev, Ya. P.

doi:10.1016/s1364-6826(96)00110-1

Cited by 75 publications

(42 citation statements)

References 13 publications

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“…In the area of maximal conductivity due to Joule heating acoustic gravity waves will be generated giving rise to the small-scale density irregularities within the ionosphere . These processes are manifested in periodic electron density oscillations registered at different ionospheric heights by radiophysical techniques and optical monitoring of the ionosphere and are well supported by the experimental data (Chmyrev et al 1997). The other, probably main and well-documented effect is formation of the large-scale irregularities of electron concentrations in the F2 region of the ionosphere (Pulinets and Legen'ka 2003).…”

Section: Anomalous Electric Field Effects In the Ionospheresupporting

confidence: 55%

Ionospheric Precursors of Earthquakes; Recent Advances in Theory and Practical Applications

Пулинец¹

2004

Terr. Atmos. Ocean. Sci.

237

123

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This paper accumulates the recent advances in scientific understanding of the problem of seismo-ionospheric coupling. Present research focuses on three main areas: the physical mechanism, main phenomenological features of ionospheric variations associated with earthquakes, and their statistical properties permitting use of them in practical applications. In this paper, the developed physical model bridges the traditional precursors of earthquakes and ionospheric ones, demonstrating that the latter belong to the same family. In this regard the earthquake preparation zone is key generating the scaling law and the relationship between geochemical precursors, anomalous electric field involved in ionospheric variations initiated, and the ionospheric irregularities themselves. Revealed ionospheric precursor phenomena and their statistical parameters are used to develop a pattern recognition technique and other statistical processing techniques that can be used in short-term earthquake prediction. Finally a possible system of ground based measurements and satellite monitoring is proposed for regional and global monitoring and possible short-term prediction of destructive earthquakes.

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Section: Anomalous Electric Field Effects In the Ionospheresupporting

confidence: 55%

Ionospheric Precursors of Earthquakes; Recent Advances in Theory and Practical Applications

Пулинец¹

2004

Terr. Atmos. Ocean. Sci.

237

123

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“…Recently, various groundbased observations have shown the possibility of ULF electromagnetic disturbances generation by earthquake preparation processes. Concerning ULF variations, for the first time magnetic field variation (Chmyrev et al, 1989) number density fluctuations (Chmyrev et al, 1997) in ULF diapason related to seismic events had been revealed by direct measurements in the ionosphere. A model of these phenomena, estimation of observed parameters and its comparison with experimental data were performed by Sorokin et al (1998).…”

Section: Introductionmentioning

confidence: 93%

Novelty detection in time series of ULF magnetic and electric components obtained from DEMETER satellite experiments above Samoa (29 September 2009) earthquake region

Akhoondzadeh

2013

Nat. Hazards Earth Syst. Sci.

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Abstract. Using ULF (ultra low frequency) measurements of magnetometer and ICE (Instrument Champ Electrique) experiments on board the DEMETER satellite, possible irregularities in ULF magnetic and electric components have been surveyed in the vicinity of Samoa (29 September 2009) earthquake region. The data used in this paper cover the period from 1 August 2009 to 11 October 2009. The anomalous variations in magnetic components (B x , B y and B z ) were clearly observed on 1 and 3 days before the event. It is seen that the periodic patterns of the magnetic components obviously changed prior to the earthquake. These unusual variations have been also observed in the variations of polarization index obtained from the magnetic components during the whole period at ∼10:30 and ∼22:30 LT. It is concluded that the polarization exhibits an apparent increase on 1 and 3 days preceding the earthquake. These observed unusual disturbances in ULF magnetic components were acknowledged using the detected perturbations in ULF electric components (E x , E y and E z ) in the geomagnetic coordinate system. Finally, the results reported in this paper were compared with previous results for this Samoa earthquake. Hence, the detected anomalies resulting from the magnetometer and ICE ULF waveforms in quiet geomagnetic conditions could be regarded as seismo-ionospheric precursors.

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“…The ionospheric anomalies, which are observed near epicenters before earthquakes, have attracted considerable attention. Hence, various studies have reported on pre-earthquake ionospheric anomalies observed for some special earthquake events (Calais and Minster 1995;Chmyrev et al 1997;Silina et al 2001;Liu et al 2000Liu et al , 2006Liu et al , 2008Liu et al , 2010Liu et al , 2011Plotkin 2003;Rios et al 2004;Pulinets and Boyarchuk 2004;Trigunait et al 2004;Hobara and Parrot 2005;Liperovskaya et al 2006;Zakharenkova et al 2006Zakharenkova et al , 2007Zakharenkova et al , 2008Singh and Singh 2007;Zhao et al 2008;Lin et al 2009;Zhou et al 2009;Hsiao et al 2010;Lin 2010Lin , 2012Jyh-Woei 2011;Yao et al 2012). …”

Section: Introductionmentioning

confidence: 99%

Observed TEC Anomalies by GNSS Sites Preceding the Aegean Sea Earthquake of 2014

Yalçınkaya¹

2016

JGG

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Small-scale plasma inhomogeneities and correlated ELF emissions in the ionosphere over an earthquake region

Cited by 75 publications

References 13 publications

Ionospheric Precursors of Earthquakes; Recent Advances in Theory and Practical Applications

Ionospheric Precursors of Earthquakes; Recent Advances in Theory and Practical Applications

Novelty detection in time series of ULF magnetic and electric components obtained from DEMETER satellite experiments above Samoa (29 September 2009) earthquake region

Observed TEC Anomalies by GNSS Sites Preceding the Aegean Sea Earthquake of 2014

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