Directional features of the downshifted peak observed in HF-induced stimulated electromagnetic emission spectra obtained using an interferometer
A high frequency (HF) ionospheric modification experiment was carried out between 25 September and 8 October 2004, using the EISCAT HF transmitter located near Tromsø, Norway. During this experiment the spectra of the stimulated HF sideband waves (stimulated electromagnetic emission or SEE) induced...
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ftdoajarticles:oai:doaj.org/article:cc307174b6eb4da6a22f2d121a62b6d8 2023-05-15T16:04:33+02:00 Directional features of the downshifted peak observed in HF-induced stimulated electromagnetic emission spectra obtained using an interferometer E. D. Tereshchenko R. Yu. Yurik B. Z. Khudukon M. T. Rietveld B. Isham V. Belyey A. Brekke T. Hagfors M. Grill 2006-08-01T00:00:00Z https://doi.org/10.5194/angeo-24-1819-2006 https://doaj.org/article/cc307174b6eb4da6a22f2d121a62b6d8 EN eng Copernicus Publications https://www.ann-geophys.net/24/1819/2006/angeo-24-1819-2006.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-24-1819-2006 0992-7689 1432-0576 https://doaj.org/article/cc307174b6eb4da6a22f2d121a62b6d8 Annales Geophysicae, Vol 24, Pp 1819-1827 (2006) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2006 ftdoajarticles https://doi.org/10.5194/angeo-24-1819-2006 2022-12-31T11:50:59Z A high frequency (HF) ionospheric modification experiment was carried out between 25 September and 8 October 2004, using the EISCAT HF transmitter located near Tromsø, Norway. During this experiment the spectra of the stimulated HF sideband waves (stimulated electromagnetic emission or SEE) induced by the HF pump were observed using an interferometer consisting of three spaced receiving antennas with baselines both along and perpendicular to the meridian, and a multi-channel coherent receiver, installed in the vicinity of the HF facility. The transmitter operated at 4040kHz and its antenna beam was scanned to angles of 0°, 7°, 14°, and 21° south from vertical, pausing 4min at each position. This paper focuses on features of the downshifted peak (DP) emission, which has not been as thoroughly studied as many of the other SEE spectral features observable within the EISCAT pump frequency range. It was found that the signal-weighted direction of the DP source region remained within 5° of magnetic zenith as the HF beam was tilted between 0 and 21° south of vertical. Article in Journal/Newspaper EISCAT Tromsø Directory of Open Access Journals: DOAJ Articles Norway Tromsø Annales Geophysicae 24 7 1819 1827 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 E. D. Tereshchenko R. Yu. Yurik B. Z. Khudukon M. T. Rietveld B. Isham V. Belyey A. Brekke T. Hagfors M. Grill Directional features of the downshifted peak observed in HF-induced stimulated electromagnetic emission spectra obtained using an interferometer |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
A high frequency (HF) ionospheric modification experiment was carried out between 25 September and 8 October 2004, using the EISCAT HF transmitter located near Tromsø, Norway. During this experiment the spectra of the stimulated HF sideband waves (stimulated electromagnetic emission or SEE) induced by the HF pump were observed using an interferometer consisting of three spaced receiving antennas with baselines both along and perpendicular to the meridian, and a multi-channel coherent receiver, installed in the vicinity of the HF facility. The transmitter operated at 4040kHz and its antenna beam was scanned to angles of 0°, 7°, 14°, and 21° south from vertical, pausing 4min at each position. This paper focuses on features of the downshifted peak (DP) emission, which has not been as thoroughly studied as many of the other SEE spectral features observable within the EISCAT pump frequency range. It was found that the signal-weighted direction of the DP source region remained within 5° of magnetic zenith as the HF beam was tilted between 0 and 21° south of vertical. |
format |
Article in Journal/Newspaper |
author |
E. D. Tereshchenko R. Yu. Yurik B. Z. Khudukon M. T. Rietveld B. Isham V. Belyey A. Brekke T. Hagfors M. Grill |
author_facet |
E. D. Tereshchenko R. Yu. Yurik B. Z. Khudukon M. T. Rietveld B. Isham V. Belyey A. Brekke T. Hagfors M. Grill |
author_sort |
E. D. Tereshchenko |
title |
Directional features of the downshifted peak observed in HF-induced stimulated electromagnetic emission spectra obtained using an interferometer |
title_short |
Directional features of the downshifted peak observed in HF-induced stimulated electromagnetic emission spectra obtained using an interferometer |
title_full |
Directional features of the downshifted peak observed in HF-induced stimulated electromagnetic emission spectra obtained using an interferometer |
title_fullStr |
Directional features of the downshifted peak observed in HF-induced stimulated electromagnetic emission spectra obtained using an interferometer |
title_full_unstemmed |
Directional features of the downshifted peak observed in HF-induced stimulated electromagnetic emission spectra obtained using an interferometer |
title_sort |
directional features of the downshifted peak observed in hf-induced stimulated electromagnetic emission spectra obtained using an interferometer |
publisher |
Copernicus Publications |
publishDate |
2006 |
url |
https://doi.org/10.5194/angeo-24-1819-2006 https://doaj.org/article/cc307174b6eb4da6a22f2d121a62b6d8 |
geographic |
Norway Tromsø |
geographic_facet |
Norway Tromsø |
genre |
EISCAT Tromsø |
genre_facet |
EISCAT Tromsø |
op_source |
Annales Geophysicae, Vol 24, Pp 1819-1827 (2006) |
op_relation |
https://www.ann-geophys.net/24/1819/2006/angeo-24-1819-2006.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-24-1819-2006 0992-7689 1432-0576 https://doaj.org/article/cc307174b6eb4da6a22f2d121a62b6d8 |
op_doi |
https://doi.org/10.5194/angeo-24-1819-2006 |
container_title |
Annales Geophysicae |
container_volume |
24 |
container_issue |
7 |
container_start_page |
1819 |
op_container_end_page |
1827 |
_version_ |
1766400145563320320 |