Observations of HF-induced instability in the auroral E region
Enhancements were observed in backscattered radar power during an ionospheric heating experiment from two distinct altitude regions in the auroral E region above Tromsø. For the experiment the EISCAT Tromsø heater was operated with O mode and X mode alternated at 4.04 MHz, close to the 3rd electron...
Published in: | Annales Geophysicae |
---|---|
Main Authors: | , , , , |
Format: | Text |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://doi.org/10.5194/angeo-31-1103-2013 https://angeo.copernicus.org/articles/31/1103/2013/ |
id |
ftcopernicus:oai:publications.copernicus.org:angeo15239 |
---|---|
record_format |
openpolar |
spelling |
ftcopernicus:oai:publications.copernicus.org:angeo15239 2023-05-15T16:04:28+02:00 Observations of HF-induced instability in the auroral E region Schlatter, N. M. Ivchenko, N. Gustavsson, B. Leyser, T. Rietveld, M. 2018-10-21 application/pdf https://doi.org/10.5194/angeo-31-1103-2013 https://angeo.copernicus.org/articles/31/1103/2013/ eng eng doi:10.5194/angeo-31-1103-2013 https://angeo.copernicus.org/articles/31/1103/2013/ eISSN: 1432-0576 Text 2018 ftcopernicus https://doi.org/10.5194/angeo-31-1103-2013 2020-07-20T16:25:27Z Enhancements were observed in backscattered radar power during an ionospheric heating experiment from two distinct altitude regions in the auroral E region above Tromsø. For the experiment the EISCAT Tromsø heater was operated with O mode and X mode alternated at 4.04 MHz, close to the 3rd electron gyroharmonic. Ion-line data recorded with the EISCAT UHF radar reveal different temporal evolutions as well as different ion-line characteristics for the enhancements from the two altitude regions. The upper layer is dominated by a strong central feature, whereas the lower layer has three peaks corresponding to the central feature and the two ion lines. The altitude region of the two closely spaced (altitude separation ~ 5 km) but distinct enhancements is close to the critical altitude for the heater wave. Text EISCAT Tromsø Copernicus Publications: E-Journals Tromsø Annales Geophysicae 31 6 1103 1108 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Enhancements were observed in backscattered radar power during an ionospheric heating experiment from two distinct altitude regions in the auroral E region above Tromsø. For the experiment the EISCAT Tromsø heater was operated with O mode and X mode alternated at 4.04 MHz, close to the 3rd electron gyroharmonic. Ion-line data recorded with the EISCAT UHF radar reveal different temporal evolutions as well as different ion-line characteristics for the enhancements from the two altitude regions. The upper layer is dominated by a strong central feature, whereas the lower layer has three peaks corresponding to the central feature and the two ion lines. The altitude region of the two closely spaced (altitude separation ~ 5 km) but distinct enhancements is close to the critical altitude for the heater wave. |
format |
Text |
author |
Schlatter, N. M. Ivchenko, N. Gustavsson, B. Leyser, T. Rietveld, M. |
spellingShingle |
Schlatter, N. M. Ivchenko, N. Gustavsson, B. Leyser, T. Rietveld, M. Observations of HF-induced instability in the auroral E region |
author_facet |
Schlatter, N. M. Ivchenko, N. Gustavsson, B. Leyser, T. Rietveld, M. |
author_sort |
Schlatter, N. M. |
title |
Observations of HF-induced instability in the auroral E region |
title_short |
Observations of HF-induced instability in the auroral E region |
title_full |
Observations of HF-induced instability in the auroral E region |
title_fullStr |
Observations of HF-induced instability in the auroral E region |
title_full_unstemmed |
Observations of HF-induced instability in the auroral E region |
title_sort |
observations of hf-induced instability in the auroral e region |
publishDate |
2018 |
url |
https://doi.org/10.5194/angeo-31-1103-2013 https://angeo.copernicus.org/articles/31/1103/2013/ |
geographic |
Tromsø |
geographic_facet |
Tromsø |
genre |
EISCAT Tromsø |
genre_facet |
EISCAT Tromsø |
op_source |
eISSN: 1432-0576 |
op_relation |
doi:10.5194/angeo-31-1103-2013 https://angeo.copernicus.org/articles/31/1103/2013/ |
op_doi |
https://doi.org/10.5194/angeo-31-1103-2013 |
container_title |
Annales Geophysicae |
container_volume |
31 |
container_issue |
6 |
container_start_page |
1103 |
op_container_end_page |
1108 |
_version_ |
1766400058543046656 |