ULF wave occurrence statistics in a high-latitude HF Doppler sounder
Ultra low frequency (ULF) wave activity in the high-latitude ionosphere has been observed by a high frequency (HF) Doppler sounder located at Tromsø, Norway (69.7°N, 19.2°E geographic coordinates). A statistical study of the occurrence of these waves has been undertaken from data collected between 1...
Published in: | Annales Geophysicae |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Verlag
1999
|
Subjects: | |
Online Access: | https://doi.org/10.1007/s00585-999-0749-2 https://noa.gwlb.de/receive/cop_mods_00037039 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036993/angeo-17-749-1999.pdf https://angeo.copernicus.org/articles/17/749/1999/angeo-17-749-1999.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00037039 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00037039 2023-05-15T18:34:34+02:00 ULF wave occurrence statistics in a high-latitude HF Doppler sounder Wright, D. M. Yeoman, T. K. Jones, T. B. 1999-06 electronic https://doi.org/10.1007/s00585-999-0749-2 https://noa.gwlb.de/receive/cop_mods_00037039 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036993/angeo-17-749-1999.pdf https://angeo.copernicus.org/articles/17/749/1999/angeo-17-749-1999.pdf eng eng Springer Verlag Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.1007/s00585-999-0749-2 https://noa.gwlb.de/receive/cop_mods_00037039 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036993/angeo-17-749-1999.pdf https://angeo.copernicus.org/articles/17/749/1999/angeo-17-749-1999.pdf https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 1999 ftnonlinearchiv https://doi.org/10.1007/s00585-999-0749-2 2022-02-08T22:43:43Z Ultra low frequency (ULF) wave activity in the high-latitude ionosphere has been observed by a high frequency (HF) Doppler sounder located at Tromsø, Norway (69.7°N, 19.2°E geographic coordinates). A statistical study of the occurrence of these waves has been undertaken from data collected between 1979 and 1984. The diurnal, seasonal, solar cycle and geomagnetic activity variations in occurrence have been investigated. The findings demonstrate that the ability of the sounder to detect ULF wave signatures maximises at the equinoxes and that there is a peak in occurrence in the morning sector. The occurrence rate is fairly insensitive to changes associated with the solar cycle but increases with the level of geomagnetic activity. As a result, it has been possible to characterise the way in which prevailing ionospheric and magnetospheric conditions affect such observations of ULF waves. Key words. Ionosphere (auroral ionosphere; ionosphere -magnetosphere interactions) · Magnetospheric physics (MHD waves and instabilities) Article in Journal/Newspaper Tromsø Niedersächsisches Online-Archiv NOA Norway Tromsø Annales Geophysicae 17 6 749 758 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Wright, D. M. Yeoman, T. K. Jones, T. B. ULF wave occurrence statistics in a high-latitude HF Doppler sounder |
topic_facet |
article Verlagsveröffentlichung |
description |
Ultra low frequency (ULF) wave activity in the high-latitude ionosphere has been observed by a high frequency (HF) Doppler sounder located at Tromsø, Norway (69.7°N, 19.2°E geographic coordinates). A statistical study of the occurrence of these waves has been undertaken from data collected between 1979 and 1984. The diurnal, seasonal, solar cycle and geomagnetic activity variations in occurrence have been investigated. The findings demonstrate that the ability of the sounder to detect ULF wave signatures maximises at the equinoxes and that there is a peak in occurrence in the morning sector. The occurrence rate is fairly insensitive to changes associated with the solar cycle but increases with the level of geomagnetic activity. As a result, it has been possible to characterise the way in which prevailing ionospheric and magnetospheric conditions affect such observations of ULF waves. Key words. Ionosphere (auroral ionosphere; ionosphere -magnetosphere interactions) · Magnetospheric physics (MHD waves and instabilities) |
format |
Article in Journal/Newspaper |
author |
Wright, D. M. Yeoman, T. K. Jones, T. B. |
author_facet |
Wright, D. M. Yeoman, T. K. Jones, T. B. |
author_sort |
Wright, D. M. |
title |
ULF wave occurrence statistics in a high-latitude HF Doppler sounder |
title_short |
ULF wave occurrence statistics in a high-latitude HF Doppler sounder |
title_full |
ULF wave occurrence statistics in a high-latitude HF Doppler sounder |
title_fullStr |
ULF wave occurrence statistics in a high-latitude HF Doppler sounder |
title_full_unstemmed |
ULF wave occurrence statistics in a high-latitude HF Doppler sounder |
title_sort |
ulf wave occurrence statistics in a high-latitude hf doppler sounder |
publisher |
Springer Verlag |
publishDate |
1999 |
url |
https://doi.org/10.1007/s00585-999-0749-2 https://noa.gwlb.de/receive/cop_mods_00037039 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036993/angeo-17-749-1999.pdf https://angeo.copernicus.org/articles/17/749/1999/angeo-17-749-1999.pdf |
geographic |
Norway Tromsø |
geographic_facet |
Norway Tromsø |
genre |
Tromsø |
genre_facet |
Tromsø |
op_relation |
Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.1007/s00585-999-0749-2 https://noa.gwlb.de/receive/cop_mods_00037039 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036993/angeo-17-749-1999.pdf https://angeo.copernicus.org/articles/17/749/1999/angeo-17-749-1999.pdf |
op_rights |
https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00585-999-0749-2 |
container_title |
Annales Geophysicae |
container_volume |
17 |
container_issue |
6 |
container_start_page |
749 |
op_container_end_page |
758 |
_version_ |
1766219364959256576 |