Particle precipitation during NEIAL events: simultaneous ground based nighttime observations at Svalbard
In this paper we present Naturally Enhanced Ion Acoustic Lines (NEIALs) observed with the EISCAT Svalbard Radar (ESR) together with auroral emissions observed with the Meridian Scanning Photometer (MSP). This is the first report of NEIALs observed during nighttime at Svalbard. Previously, NEIALs hav...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00030385 2023-05-15T16:04:41+02:00 Particle precipitation during NEIAL events: simultaneous ground based nighttime observations at Svalbard Lunde, J. Løvhaug, U. P. Gustavsson, B. 2009-05 electronic https://doi.org/10.5194/angeo-27-2001-2009 https://noa.gwlb.de/receive/cop_mods_00030385 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00030339/angeo-27-2001-2009.pdf https://angeo.copernicus.org/articles/27/2001/2009/angeo-27-2001-2009.pdf eng eng Copernicus Publications 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/10.5194/angeo-27-2001-2009 https://noa.gwlb.de/receive/cop_mods_00030385 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00030339/angeo-27-2001-2009.pdf https://angeo.copernicus.org/articles/27/2001/2009/angeo-27-2001-2009.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2009 ftnonlinearchiv https://doi.org/10.5194/angeo-27-2001-2009 2022-02-08T22:47:15Z In this paper we present Naturally Enhanced Ion Acoustic Lines (NEIALs) observed with the EISCAT Svalbard Radar (ESR) together with auroral emissions observed with the Meridian Scanning Photometer (MSP). This is the first report of NEIALs observed during nighttime at Svalbard. Previously, NEIALs have been associated with a strong red line intensity (>10 kR), which exceeds the green line intensities. The high intensity in the red line emission is a sign of abundant low energy electron precipitation. In our observations, one of the NEIAL events was accompanied by the red line emissions far below the previously reported intensities. This happened when the green line intensity exceeds the red line intensity. In this work we discuss the behaviour of electron precipitation characteristics and optical emissions during NEIAL events on the nightside, and we suggest that intensity enhancements in the 844.6 nm emission line could be a better candidate than the 630.0 nm emission as an optical signature for NEIALs. Article in Journal/Newspaper EISCAT Svalbard Niedersächsisches Online-Archiv NOA Svalbard Annales Geophysicae 27 5 2001 2010 |
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Niedersächsisches Online-Archiv NOA |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Lunde, J. Løvhaug, U. P. Gustavsson, B. Particle precipitation during NEIAL events: simultaneous ground based nighttime observations at Svalbard |
topic_facet |
article Verlagsveröffentlichung |
description |
In this paper we present Naturally Enhanced Ion Acoustic Lines (NEIALs) observed with the EISCAT Svalbard Radar (ESR) together with auroral emissions observed with the Meridian Scanning Photometer (MSP). This is the first report of NEIALs observed during nighttime at Svalbard. Previously, NEIALs have been associated with a strong red line intensity (>10 kR), which exceeds the green line intensities. The high intensity in the red line emission is a sign of abundant low energy electron precipitation. In our observations, one of the NEIAL events was accompanied by the red line emissions far below the previously reported intensities. This happened when the green line intensity exceeds the red line intensity. In this work we discuss the behaviour of electron precipitation characteristics and optical emissions during NEIAL events on the nightside, and we suggest that intensity enhancements in the 844.6 nm emission line could be a better candidate than the 630.0 nm emission as an optical signature for NEIALs. |
format |
Article in Journal/Newspaper |
author |
Lunde, J. Løvhaug, U. P. Gustavsson, B. |
author_facet |
Lunde, J. Løvhaug, U. P. Gustavsson, B. |
author_sort |
Lunde, J. |
title |
Particle precipitation during NEIAL events: simultaneous ground based nighttime observations at Svalbard |
title_short |
Particle precipitation during NEIAL events: simultaneous ground based nighttime observations at Svalbard |
title_full |
Particle precipitation during NEIAL events: simultaneous ground based nighttime observations at Svalbard |
title_fullStr |
Particle precipitation during NEIAL events: simultaneous ground based nighttime observations at Svalbard |
title_full_unstemmed |
Particle precipitation during NEIAL events: simultaneous ground based nighttime observations at Svalbard |
title_sort |
particle precipitation during neial events: simultaneous ground based nighttime observations at svalbard |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
https://doi.org/10.5194/angeo-27-2001-2009 https://noa.gwlb.de/receive/cop_mods_00030385 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00030339/angeo-27-2001-2009.pdf https://angeo.copernicus.org/articles/27/2001/2009/angeo-27-2001-2009.pdf |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT Svalbard |
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/10.5194/angeo-27-2001-2009 https://noa.gwlb.de/receive/cop_mods_00030385 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00030339/angeo-27-2001-2009.pdf https://angeo.copernicus.org/articles/27/2001/2009/angeo-27-2001-2009.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-27-2001-2009 |
container_title |
Annales Geophysicae |
container_volume |
27 |
container_issue |
5 |
container_start_page |
2001 |
op_container_end_page |
2010 |
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1766400300412829696 |