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| Titel |
Disturbances in VHF/UHF telemetry links as a possible effect of the 2003 Hokkaido Tokachi-oki earthquake |
| VerfasserIn |
H. Nagamoto, T. Fukushima, Y. Ida, Y. Matsudo, M. Hayakawa |
| 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 ; 8, no. 4 ; Nr. 8, no. 4 (2008-08-05), S.813-817 |
| Datensatznummer |
250005654
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| Publikation (Nr.) |
 copernicus.org/nhess-8-813-2008.pdf |
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| Zusammenfassung |
| The data on radio telemetry links (for water information) at VHF/UHF in
Hokkaido are used to investigate the rate of disturbances on radio links (or
connection failure) and its association with a huge earthquake, Tokachi-oki
earthquake on 26 September 2003. Especially, the telemetry links at the
Tokachi region closest to the earthquake epicenter, showed a significant
increase in disturbances on radio links two weeks to a few days before the
earthquake on the basis of analysis during a long interval from 1 June 2002
to 3 November 2007 (over 5 years). We suggest that these severe
disturbances in VHF/UHF telemetry links are attributed to the generation of
seismogenic VHF/UHF radio noises (emissions). Based on this idea, we have
estimated that the intensity of these seismogenic emissions is on the order
of 10–19 dB μV/m. Finally, the present result was compared with other
physical parameters already obtained for this earthquake. |
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