Disturbances in VHF/UHF telemetry links as a possible effect of the 2003 Hokkaido Tokachi-oki earthquake
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 Tok...
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Copernicus Publications
2018
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| Truy cập Trực tuyến: | http://lrc.quangbinhuni.edu.vn:8181/dspace/handle/DHQB_123456789/3688 |
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oai:localhost:DHQB_123456789-36882018-10-22T08:43:12Z Disturbances in VHF/UHF telemetry links as a possible effect of the 2003 Hokkaido Tokachi-oki earthquake Nagamoto, H. Fukushima, T. Ida, Y. Matsudo, Y. Hayakawa, M. Technology Sanitary engineering Environmental technology Geography. 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. 2018-07-17T08:43:29Z 2018-07-17T08:43:29Z 2018 http://lrc.quangbinhuni.edu.vn:8181/dspace/handle/DHQB_123456789/3688 en Copernicus Publications |
| institution |
Trung tâm Học liệu Đại học Quảng Bình (Dspace) |
| collection |
Trung tâm Học liệu Đại học Quảng Bình (Dspace) |
| language |
English |
| topic |
Technology Sanitary engineering Environmental technology Geography. |
| spellingShingle |
Technology Sanitary engineering Environmental technology Geography. Nagamoto, H. Fukushima, T. Ida, Y. Matsudo, Y. Hayakawa, M. Disturbances in VHF/UHF telemetry links as a possible effect of the 2003 Hokkaido Tokachi-oki earthquake |
| description |
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. |
| author |
Nagamoto, H. Fukushima, T. Ida, Y. Matsudo, Y. Hayakawa, M. |
| author_facet |
Nagamoto, H. Fukushima, T. Ida, Y. Matsudo, Y. Hayakawa, M. |
| author_sort |
Nagamoto, H. |
| title |
Disturbances in VHF/UHF telemetry links as a possible effect of the 2003 Hokkaido Tokachi-oki earthquake |
| title_short |
Disturbances in VHF/UHF telemetry links as a possible effect of the 2003 Hokkaido Tokachi-oki earthquake |
| title_full |
Disturbances in VHF/UHF telemetry links as a possible effect of the 2003 Hokkaido Tokachi-oki earthquake |
| title_fullStr |
Disturbances in VHF/UHF telemetry links as a possible effect of the 2003 Hokkaido Tokachi-oki earthquake |
| title_full_unstemmed |
Disturbances in VHF/UHF telemetry links as a possible effect of the 2003 Hokkaido Tokachi-oki earthquake |
| title_sort |
disturbances in vhf/uhf telemetry links as a possible effect of the 2003 hokkaido tokachi-oki earthquake |
| publisher |
Copernicus Publications |
| publishDate |
2018 |
| url |
http://lrc.quangbinhuni.edu.vn:8181/dspace/handle/DHQB_123456789/3688 |
| _version_ |
1717292436582039552 |
| score |
9,463379 |