First ground-based conjugate observations of Stable Auroral Red (SAR) Arcs
During the geomagnetic storm of 1 June 2013 all‐sky imagers located at geomagnetically conjugate locations at Millstone Hill, USA (42.6 o N, 71.4 o W, 50.9o mag lat) and at Rothera, Antarctica (67.5o S, 68.1o W, ‐ 53.2 o mag lat) allowed us to measure a stable auroral red (SAR) arc simultaneously in...
Published in: | Journal of Geophysical Research: Space Physics |
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American Geophysical Union
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ftnerc:oai:nora.nerc.ac.uk:520826 2023-05-15T13:49:35+02:00 First ground-based conjugate observations of Stable Auroral Red (SAR) Arcs Martinis, C. Baumbardner, J. Mendillo, M. Taylor, M. Moffat-Griffin, T. Wroten, J. Sullivan, C. Macinnis, R. Alford, B. Nishimura, Y. 2019-06-20 text http://nora.nerc.ac.uk/id/eprint/520826/ https://nora.nerc.ac.uk/id/eprint/520826/1/Martinis_et_al-2019-Journal_of_Geophysical_Research__Space_Physics.pdf https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018JA026017 en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/520826/1/Martinis_et_al-2019-Journal_of_Geophysical_Research__Space_Physics.pdf Martinis, C.; Baumbardner, J.; Mendillo, M.; Taylor, M.; Moffat-Griffin, T. orcid:0000-0002-9670-6715 Wroten, J.; Sullivan, C.; Macinnis, R.; Alford, B.; Nishimura, Y. 2019 First ground-based conjugate observations of Stable Auroral Red (SAR) Arcs. Journal of Geophysical Research: Space Physics, 124 (6). 4658-4671. https://doi.org/10.1029/2018JA026017 <https://doi.org/10.1029/2018JA026017> Publication - Article PeerReviewed 2019 ftnerc https://doi.org/10.1029/2018JA026017 2023-02-04T19:46:58Z During the geomagnetic storm of 1 June 2013 all‐sky imagers located at geomagnetically conjugate locations at Millstone Hill, USA (42.6 o N, 71.4 o W, 50.9o mag lat) and at Rothera, Antarctica (67.5o S, 68.1o W, ‐ 53.2 o mag lat) allowed us to measure a stable auroral red (SAR) arc simultaneously in both hemispheres for the first time. The arc measured in one hemisphere was observed very close to its conjugate location in the opposite hemisphere. While spatial characteristics, such as equatorward motion and latitudinal extent, were similar at both sites, morphological properties, e.g., arc brightness and shape of the poleward edges, differed. The overall brightness of the northern hemisphere arc was considerably weaker, by a factor of ~2‐3, throughout the night. Reduced magnetospheric forcing, in a short time interval between ~0345 UT and 0445 UT, led to decreased SAR arc brightness and reduced equatorward motion at both sites. A substorm occurring near 0500UT provided additional energization that increased the SAR arc brightness as well as the speed of the equatorward motion. These results provide evidence of a complex coupling between energy sources in the inner magnetosphere and the ionospheric receptor conditions within the sub‐auroral domain at opposite ends of the same geomagnetic field line. Article in Journal/Newspaper Antarc* Antarctica Natural Environment Research Council: NERC Open Research Archive Rothera ENVELOPE(-68.130,-68.130,-67.568,-67.568) Journal of Geophysical Research: Space Physics 124 6 4658 4671 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
During the geomagnetic storm of 1 June 2013 all‐sky imagers located at geomagnetically conjugate locations at Millstone Hill, USA (42.6 o N, 71.4 o W, 50.9o mag lat) and at Rothera, Antarctica (67.5o S, 68.1o W, ‐ 53.2 o mag lat) allowed us to measure a stable auroral red (SAR) arc simultaneously in both hemispheres for the first time. The arc measured in one hemisphere was observed very close to its conjugate location in the opposite hemisphere. While spatial characteristics, such as equatorward motion and latitudinal extent, were similar at both sites, morphological properties, e.g., arc brightness and shape of the poleward edges, differed. The overall brightness of the northern hemisphere arc was considerably weaker, by a factor of ~2‐3, throughout the night. Reduced magnetospheric forcing, in a short time interval between ~0345 UT and 0445 UT, led to decreased SAR arc brightness and reduced equatorward motion at both sites. A substorm occurring near 0500UT provided additional energization that increased the SAR arc brightness as well as the speed of the equatorward motion. These results provide evidence of a complex coupling between energy sources in the inner magnetosphere and the ionospheric receptor conditions within the sub‐auroral domain at opposite ends of the same geomagnetic field line. |
format |
Article in Journal/Newspaper |
author |
Martinis, C. Baumbardner, J. Mendillo, M. Taylor, M. Moffat-Griffin, T. Wroten, J. Sullivan, C. Macinnis, R. Alford, B. Nishimura, Y. |
spellingShingle |
Martinis, C. Baumbardner, J. Mendillo, M. Taylor, M. Moffat-Griffin, T. Wroten, J. Sullivan, C. Macinnis, R. Alford, B. Nishimura, Y. First ground-based conjugate observations of Stable Auroral Red (SAR) Arcs |
author_facet |
Martinis, C. Baumbardner, J. Mendillo, M. Taylor, M. Moffat-Griffin, T. Wroten, J. Sullivan, C. Macinnis, R. Alford, B. Nishimura, Y. |
author_sort |
Martinis, C. |
title |
First ground-based conjugate observations of Stable Auroral Red (SAR) Arcs |
title_short |
First ground-based conjugate observations of Stable Auroral Red (SAR) Arcs |
title_full |
First ground-based conjugate observations of Stable Auroral Red (SAR) Arcs |
title_fullStr |
First ground-based conjugate observations of Stable Auroral Red (SAR) Arcs |
title_full_unstemmed |
First ground-based conjugate observations of Stable Auroral Red (SAR) Arcs |
title_sort |
first ground-based conjugate observations of stable auroral red (sar) arcs |
publisher |
American Geophysical Union |
publishDate |
2019 |
url |
http://nora.nerc.ac.uk/id/eprint/520826/ https://nora.nerc.ac.uk/id/eprint/520826/1/Martinis_et_al-2019-Journal_of_Geophysical_Research__Space_Physics.pdf https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018JA026017 |
long_lat |
ENVELOPE(-68.130,-68.130,-67.568,-67.568) |
geographic |
Rothera |
geographic_facet |
Rothera |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://nora.nerc.ac.uk/id/eprint/520826/1/Martinis_et_al-2019-Journal_of_Geophysical_Research__Space_Physics.pdf Martinis, C.; Baumbardner, J.; Mendillo, M.; Taylor, M.; Moffat-Griffin, T. orcid:0000-0002-9670-6715 Wroten, J.; Sullivan, C.; Macinnis, R.; Alford, B.; Nishimura, Y. 2019 First ground-based conjugate observations of Stable Auroral Red (SAR) Arcs. Journal of Geophysical Research: Space Physics, 124 (6). 4658-4671. https://doi.org/10.1029/2018JA026017 <https://doi.org/10.1029/2018JA026017> |
op_doi |
https://doi.org/10.1029/2018JA026017 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
124 |
container_issue |
6 |
container_start_page |
4658 |
op_container_end_page |
4671 |
_version_ |
1766251803619360768 |