Simultaneous high- and low-latitude reconnection: ESR and DMSP observations
We present EISCAT Svalbard Radar and DMSP observations of a double cusp during an interval of predominantly northward IMF on 26 November 2000. In the cusp region, the ESR dish, pointing northward, recorded sun-ward ionospheric flow at high latitudes (above 82° GL), indicating reconnection occuring i...
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ftdoajarticles:oai:doaj.org/article:5308f87d6efe4086ab54ca54e0927e0f 2023-05-15T16:04:43+02:00 Simultaneous high- and low-latitude reconnection: ESR and DMSP observations F. Pitout P. T. Newell S. C. Buchert 2002-09-01T00:00:00Z https://doi.org/10.5194/angeo-20-1311-2002 https://doaj.org/article/5308f87d6efe4086ab54ca54e0927e0f EN eng Copernicus Publications https://www.ann-geophys.net/20/1311/2002/angeo-20-1311-2002.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-20-1311-2002 0992-7689 1432-0576 https://doaj.org/article/5308f87d6efe4086ab54ca54e0927e0f Annales Geophysicae, Vol 20, Pp 1311-1320 (2002) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2002 ftdoajarticles https://doi.org/10.5194/angeo-20-1311-2002 2022-12-31T15:55:00Z We present EISCAT Svalbard Radar and DMSP observations of a double cusp during an interval of predominantly northward IMF on 26 November 2000. In the cusp region, the ESR dish, pointing northward, recorded sun-ward ionospheric flow at high latitudes (above 82° GL), indicating reconnection occuring in the magnetospheric lobe. Meanwhile, the same dish also recorded bursts of poleward flow, indicative of bursty reconnection at the subsolar magnetopause. Within this time interval, the DMSP F13 satellite passed in the close vicinity of the Svalbard archipelago. The particle measurement on board exhibited a double cusp structure in which two oppositely oriented ion dispersions are recorded. We interpret this set of data in terms of simultaneous merging at low- and high-latitude magnetopause. We discuss the conditions for which such simultaneous high-latitude and low-latitude reconnection can be anticipated. We also discuss the consequences of the presence of two X-lines in the dayside polar ionosphere. Key words. Magnetospheric physics (solar wind-magnetosphere interactions) – Ionosphere (polar ionosphere; plasma convection) Article in Journal/Newspaper EISCAT Svalbard Directory of Open Access Journals: DOAJ Articles Svalbard Svalbard Archipelago Annales Geophysicae 20 9 1311 1320 |
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 F. Pitout P. T. Newell S. C. Buchert Simultaneous high- and low-latitude reconnection: ESR and DMSP observations |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
We present EISCAT Svalbard Radar and DMSP observations of a double cusp during an interval of predominantly northward IMF on 26 November 2000. In the cusp region, the ESR dish, pointing northward, recorded sun-ward ionospheric flow at high latitudes (above 82° GL), indicating reconnection occuring in the magnetospheric lobe. Meanwhile, the same dish also recorded bursts of poleward flow, indicative of bursty reconnection at the subsolar magnetopause. Within this time interval, the DMSP F13 satellite passed in the close vicinity of the Svalbard archipelago. The particle measurement on board exhibited a double cusp structure in which two oppositely oriented ion dispersions are recorded. We interpret this set of data in terms of simultaneous merging at low- and high-latitude magnetopause. We discuss the conditions for which such simultaneous high-latitude and low-latitude reconnection can be anticipated. We also discuss the consequences of the presence of two X-lines in the dayside polar ionosphere. Key words. Magnetospheric physics (solar wind-magnetosphere interactions) – Ionosphere (polar ionosphere; plasma convection) |
format |
Article in Journal/Newspaper |
author |
F. Pitout P. T. Newell S. C. Buchert |
author_facet |
F. Pitout P. T. Newell S. C. Buchert |
author_sort |
F. Pitout |
title |
Simultaneous high- and low-latitude reconnection: ESR and DMSP observations |
title_short |
Simultaneous high- and low-latitude reconnection: ESR and DMSP observations |
title_full |
Simultaneous high- and low-latitude reconnection: ESR and DMSP observations |
title_fullStr |
Simultaneous high- and low-latitude reconnection: ESR and DMSP observations |
title_full_unstemmed |
Simultaneous high- and low-latitude reconnection: ESR and DMSP observations |
title_sort |
simultaneous high- and low-latitude reconnection: esr and dmsp observations |
publisher |
Copernicus Publications |
publishDate |
2002 |
url |
https://doi.org/10.5194/angeo-20-1311-2002 https://doaj.org/article/5308f87d6efe4086ab54ca54e0927e0f |
geographic |
Svalbard Svalbard Archipelago |
geographic_facet |
Svalbard Svalbard Archipelago |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT Svalbard |
op_source |
Annales Geophysicae, Vol 20, Pp 1311-1320 (2002) |
op_relation |
https://www.ann-geophys.net/20/1311/2002/angeo-20-1311-2002.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-20-1311-2002 0992-7689 1432-0576 https://doaj.org/article/5308f87d6efe4086ab54ca54e0927e0f |
op_doi |
https://doi.org/10.5194/angeo-20-1311-2002 |
container_title |
Annales Geophysicae |
container_volume |
20 |
container_issue |
9 |
container_start_page |
1311 |
op_container_end_page |
1320 |
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1766400335867281408 |