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| Titel |
Ionospheric perturbations in possible association with the 2010 Haiti earthquake, as based on medium-distance subionospheric VLF propagation data |
| VerfasserIn |
M. Hayakawa, J. P. Raulin, Y. Kasahara, F. C. P. Bertoni, Y. Hobara, W. Guevara-Day |
| 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 ; 11, no. 2 ; Nr. 11, no. 2 (2011-02-16), S.513-518 |
| Datensatznummer |
250009163
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| Publikation (Nr.) |
 copernicus.org/nhess-11-513-2011.pdf |
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| Zusammenfassung |
| Ionospheric perturbations in possible association with the 2010 Haiti
earthquake occurred on 12 January 2010 (with a magnitude of 7.0 and depth of
10 km) are investigated on the basis of subionospheric propagation data from
the NAA transmitter on the east coast of the USA to a VLF receiving station in
Peru. The local nighttime VLF amplitude data are extensively investigated
during the period from the beginning of October 2009 to the end of March
2010, in which the trend (nighttime average amplitude), dispersion and
nighttime fluctuation are analysed. It is found that a clear precursory
ionosphere perturbation is detected just around New Years day of 2010,
about 12 days before the main shock, which is characterised by the
simultaneous decrease in the trend and the increases in dispersion and nighttime
fluctuation. An additional finding might be the presence of the effect of
the Earth's tide one and two months before the main shock, which can only be seen
for a huge EQ. |
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