Detection of ULF electromagnetic emissions as a precursor to two earthquakes in China

Detection of ULF electromagnetic emissions as a precursor to two earthquakes in China

The geomagnetic data recorded by Kashi and Jinghai observatories in China were analyzed with improved polarization method. We compared the result around 0.01 Hz which is thought to be useful to detect the ULF anomaly with the result around 0.1 Hz which was inferred from the earthquake depth accordin...

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Veröffentlicht in:Earthquake science 2011-12, Vol.24 (6), p.601-607
Hauptverfasser: Li, Qi, Zhu, Peiyu, Mamatemin, Alimjan, Xu, Xuegong
Format: Artikel
Sprache:eng
Schlagworte:
Anomalies
China
Earth and Environmental Science
Earth Sciences
Earthquakes
Geomagnetism
Geophysics/Geodesy
Precursors
Seismic phenomena
Skin effect
ULF
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Zusammenfassung:The geomagnetic data recorded by Kashi and Jinghai observatories in China were analyzed with improved polarization method. We compared the result around 0.01 Hz which is thought to be useful to detect the ULF anomaly with the result around 0.1 Hz which was inferred from the earthquake depth according to the skin effect, and found that 0.1 Hz is more proper to detect the ULF anomaly for both earthquakes studied in this paper.
ISSN:1674-4519
1867-8777
DOI:10.1007/s11589-011-0822-2