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Total electron content disturbances prior to great Tohoku March 11, 2011 and October 23, 2011 Turkey Van earthquakes and their physical interpretation12helmholtz Centre Potsdam, GFZ German research Centre for Geosciences

Total electron content disturbances prior to great Tohoku March 11, 2011 and October 23, 2011 Turkey Van earthquakes and their physical interpretation12helmholtz Centre Potsdam, GFZ German research Centre for Geosciences

Abstract

This paper discusses the GPS (Global Positioning System) observed TEC (Total Electron Content) variations prior to the M 9.0 Great Tohoku (Japan, Sendai) March 11, 2011 and M 7.1 Oct. 23, 2011 Turkey Van earthquakes as possible seismo-ionosphere precursors. We have formulated a set of the TEC phenomenological features often reported as precursors to strong earthquakes based on our experience and publications' analysis. This feature-set has been applied to the relative TEC deviations for time intervals March 08-11, 2011 and Oct. 20-23, 2011 preceding M 9.0 Great Tohoku (Japan) March 11 and Turkey Van Oct. 23 earthquakes, respectively. In both cases there have been revealed strong local long-living (of about several hours) TEC disturbances at the near-epicenter and magnetically conjugated areas. These disturbances may be treated as seismo-ionospheric precursors. The physical mechanism for the observed TEC structures for these two as well as for other cases of recent strong seismic events has been proposed. The anomalies have been interpreted and explained on the base of this physical mechanism from the origin hypothesis point of view in terms of electromagnetic lithosphere-ionosphere coupling.

В статье анализируются морфологические особенности вариаций полного электронного содержания (ПЭС) ионосферы перед землетрясениями 11 марта 2011 г. (Япония) и 23 октября 2011 г. (Турция) в качестве их возможных предвестников. На основе анализа существующих работ, а также собственных результатов исследований сейсмо-ионосферных предвестников землетрясений, сформулирован перечень наиболее часто называемых особенностей в ПЭС ионосферы как вероятных предвестников. Показано, что для рассматриваемых землетрясений в периоды 08-11 марта и 20-23 октября наблюдались аномальные возмущения ПЭС как долгоживущие структуры в околоэпицентральной и магнитосопряжѐнной к ней областях. Выявленные аномальные области обсуждаются с точки зрения возможного физического механизма их формирования – электромагнитной связи системы "литосфера-ионосфера".

Keywords

M 9.0 GREAT TOHOKU (JAPAN, SENDAI) MARCH 11 2011 EARTHQUAKE, TURKEY VAN OCT. 23 2011 EARTHQUAKE, ПОЛНОЕ ЭЛЕКТРОННОЕ СОДЕРЖАНИЕ, ЗЕМЛЕТРЯСЕНИЯ 11 МАРТА 2011 Г. (ЯПОНИЯ) И 23 ОКТЯБРЯ 2011 Г. (ТУРЦИЯ), ИОНОСФЕРНЫЕ ПРЕДВЕСТНИКИ ЗЕМЛЕТРЯСЕНИЙ, ИОНОСФЕРА

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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