Solar cycle changes in daytime VLF subionospheric attenuation
Observations of field strengths of signals from a number of VLF transmitters, after propagation over long paths in the Earth–ionosphere waveguide, have been used to examine changes in the daytime attenuation rate in the course of a solar cycle. The measurements reported were recorded in the period 1...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/502523/ https://doi.org/10.1016/S1364-6826(00)00026-2 |
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ftnerc:oai:nora.nerc.ac.uk:502523 2023-05-15T13:48:07+02:00 Solar cycle changes in daytime VLF subionospheric attenuation Thomson, Neil R. Clilverd, Mark A. 2000 http://nora.nerc.ac.uk/id/eprint/502523/ https://doi.org/10.1016/S1364-6826(00)00026-2 unknown Elsevier Thomson, Neil R.; Clilverd, Mark A. orcid:0000-0002-7388-1529 . 2000 Solar cycle changes in daytime VLF subionospheric attenuation. Journal of Atmospheric and Solar-Terrestrial Physics, 62 (7). 601-608. https://doi.org/10.1016/S1364-6826(00)00026-2 <https://doi.org/10.1016/S1364-6826(00)00026-2> Publication - Article PeerReviewed 2000 ftnerc https://doi.org/10.1016/S1364-6826(00)00026-2 2023-02-04T19:37:21Z Observations of field strengths of signals from a number of VLF transmitters, after propagation over long paths in the Earth–ionosphere waveguide, have been used to examine changes in the daytime attenuation rate in the course of a solar cycle. The measurements reported were recorded in the period 1986–1996. The paths studied range in length over about 8–14 Mm; they included NLK (Seattle) and NPM (Hawaii) to Dunedin, NZ, and NAA (Cutler, Maine) and NSS (Annapolis, Maryland) to Faraday, Antarctica. The frequencies monitored were mainly in the range 21–25 kHz but measurements near 10 kHz of Omega Hawaii at Faraday were also used. The daytime VLF attenuation rates at solar minimum were found to be greater by about 0.3 dB/Mm than at solar maximum. Article in Journal/Newspaper Antarc* Antarctica Natural Environment Research Council: NERC Open Research Archive Faraday ENVELOPE(-64.256,-64.256,-65.246,-65.246) Cutler ENVELOPE(-60.981,-60.981,-62.612,-62.612) Journal of Atmospheric and Solar-Terrestrial Physics 62 7 601 608 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
Observations of field strengths of signals from a number of VLF transmitters, after propagation over long paths in the Earth–ionosphere waveguide, have been used to examine changes in the daytime attenuation rate in the course of a solar cycle. The measurements reported were recorded in the period 1986–1996. The paths studied range in length over about 8–14 Mm; they included NLK (Seattle) and NPM (Hawaii) to Dunedin, NZ, and NAA (Cutler, Maine) and NSS (Annapolis, Maryland) to Faraday, Antarctica. The frequencies monitored were mainly in the range 21–25 kHz but measurements near 10 kHz of Omega Hawaii at Faraday were also used. The daytime VLF attenuation rates at solar minimum were found to be greater by about 0.3 dB/Mm than at solar maximum. |
format |
Article in Journal/Newspaper |
author |
Thomson, Neil R. Clilverd, Mark A. |
spellingShingle |
Thomson, Neil R. Clilverd, Mark A. Solar cycle changes in daytime VLF subionospheric attenuation |
author_facet |
Thomson, Neil R. Clilverd, Mark A. |
author_sort |
Thomson, Neil R. |
title |
Solar cycle changes in daytime VLF subionospheric attenuation |
title_short |
Solar cycle changes in daytime VLF subionospheric attenuation |
title_full |
Solar cycle changes in daytime VLF subionospheric attenuation |
title_fullStr |
Solar cycle changes in daytime VLF subionospheric attenuation |
title_full_unstemmed |
Solar cycle changes in daytime VLF subionospheric attenuation |
title_sort |
solar cycle changes in daytime vlf subionospheric attenuation |
publisher |
Elsevier |
publishDate |
2000 |
url |
http://nora.nerc.ac.uk/id/eprint/502523/ https://doi.org/10.1016/S1364-6826(00)00026-2 |
long_lat |
ENVELOPE(-64.256,-64.256,-65.246,-65.246) ENVELOPE(-60.981,-60.981,-62.612,-62.612) |
geographic |
Faraday Cutler |
geographic_facet |
Faraday Cutler |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Thomson, Neil R.; Clilverd, Mark A. orcid:0000-0002-7388-1529 . 2000 Solar cycle changes in daytime VLF subionospheric attenuation. Journal of Atmospheric and Solar-Terrestrial Physics, 62 (7). 601-608. https://doi.org/10.1016/S1364-6826(00)00026-2 <https://doi.org/10.1016/S1364-6826(00)00026-2> |
op_doi |
https://doi.org/10.1016/S1364-6826(00)00026-2 |
container_title |
Journal of Atmospheric and Solar-Terrestrial Physics |
container_volume |
62 |
container_issue |
7 |
container_start_page |
601 |
op_container_end_page |
608 |
_version_ |
1766248659436961792 |