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| Titel |
Further study on the role of atmospheric gravity waves on the seismo-ionospheric perturbations as detected by subionospheric VLF/LF propagation |
| VerfasserIn |
F. Muto, Y. Kasahara, Y. Hobara, M. Hayakawa, A. Rozhnoi, M. Solovieva, O. A. Molchanov |
| 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 ; 9, no. 4 ; Nr. 9, no. 4 (2009-07-14), S.1111-1118 |
| Datensatznummer |
250006875
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| Publikation (Nr.) |
 copernicus.org/nhess-9-1111-2009.pdf |
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| Zusammenfassung |
| As the target earthquake we have taken a huge earthquake (EQ) named
Miyagi-oki earthquake on 16 August 2005 (with magnitude of 7.2) and we have
analyzed the 4 month period including the date of this EQ. In addition to
our previous analysis on the nighttime average amplitude (trend) and
nighttime fluctuation, we have proposed the use of fluctuation power spectra
in the frequency rage of atmospheric gravity waves (period=10 min to 100 min) as a third parameter of subionospheric VLF/LF propagation
characteristics. Then it is found that this third parameter would be of
additional importance in confirming the presence of seismo-ionospheric
perturbations. Finally, we have discovered an important role of lunar tidal
effect in the VLF/LF data, which appears one and two months before this
large EQ. |
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