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| Titel |
Burst increases of precipitating electrons recorded by the DEMETER satellite before strong earthquakes |
| VerfasserIn |
X. Zhang, C. Fidani, J. Huang, X. Shen, Z. Zeren, J. Qian |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 13, no. 1 ; Nr. 13, no. 1 (2013-01-29), S.197-209 |
| Datensatznummer |
250017544
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| Publikation (Nr.) |
 copernicus.org/nhess-13-197-2013.pdf |
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| Zusammenfassung |
| This case study developed a method for data processing over
six years, from 2004 to 2010, of 70 keV–2.3 MeV electrons recorded by the
DEMETER (Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions) satellite. Short time increases in electron counting rates, having
99% probabilities of not being Poisson fluctuations, were statistically
selected using geomagnetic invariant space and called electron bursts.
Temporal series were analysed confirming the seasonal variations in low
energy bands of 70–450 keV. Differently from previous results, the DEMETER
results exhibited two peaks of electron bursts: one in the period
June–August and one in the period December–February annually. Specifically,
six earthquake cases are presented in detail having increases in electron
burst number prior to events. Moreover, electron burst precipitation
occurring before each strong earthquake of the entire period over the life
of the satellite with M ≥ 7.0 was verified as having a probability
greater than 97% of not being of a statistical origin. Low energetic
electrons in 70–330 keV resulted occurring more frequently near seismic
activity than those observed in 330 keV–2.34 MeV energy bands at the satellite
altitude in the ionosphere. |
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