Analysis of close conjunctions between dayside polar cap airglow patches and flow channels by all-sky imager and DMSP ...
Abstract Recent imager and radar observations in the nightside polar cap have shown evidence that polar cap patches are associated with localized flow channels. To understand how flow channels propagate from the dayside auroral oval into the polar cap, we use an all-sky imager in Antarctica and DMSP...
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ftdatacite:10.6084/m9.figshare.c.3629051 2024-04-28T08:02:11+00:00 Analysis of close conjunctions between dayside polar cap airglow patches and flow channels by all-sky imager and DMSP ... Wang, Boyi Nishimura, Yukitoshi Lyons, Larry Zou, Ying Carlson, Herbert Frey, Harald Mende, Stephen 2016 https://dx.doi.org/10.6084/m9.figshare.c.3629051 https://springernature.figshare.com/collections/Analysis_of_close_conjunctions_between_dayside_polar_cap_airglow_patches_and_flow_channels_by_all-sky_imager_and_DMSP/3629051 unknown figshare Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Biophysics Space Science Medicine Cell Biology Molecular Biology Neuroscience Physiology FOS Biological sciences Pharmacology Evolutionary Biology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Astronomical and Space Sciences not elsewhere classified Cancer Infectious Diseases FOS Health sciences Collection article 2016 ftdatacite https://doi.org/10.6084/m9.figshare.c.3629051 2024-04-02T11:53:17Z Abstract Recent imager and radar observations in the nightside polar cap have shown evidence that polar cap patches are associated with localized flow channels. To understand how flow channels propagate from the dayside auroral oval into the polar cap, we use an all-sky imager in Antarctica and DMSP (F13, F15, F16, F17 and F18) to determine properties of density and flows associated with dayside polar cap patches. We identified 50 conjunction events during the southern winter seasons of 2007–2011. In a majority (45) of events, longitudinally narrow flow enhancements directed anti-sunward are found to be collocated with the patches, have velocities (up to a few km/s) substantially larger than the large-scale background flows (~500 m/s) and have widths comparable to patch widths (~400 km). While the patches start with poleward moving auroral forms (PMAFs) as expected, many PMAFs propagate azimuthally away from the noon over a few hours of MLT, resulting in formation of polar cap patches quite far away from the ... Article in Journal/Newspaper Antarc* Antarctica DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biophysics Space Science Medicine Cell Biology Molecular Biology Neuroscience Physiology FOS Biological sciences Pharmacology Evolutionary Biology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Astronomical and Space Sciences not elsewhere classified Cancer Infectious Diseases FOS Health sciences |
spellingShingle |
Biophysics Space Science Medicine Cell Biology Molecular Biology Neuroscience Physiology FOS Biological sciences Pharmacology Evolutionary Biology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Astronomical and Space Sciences not elsewhere classified Cancer Infectious Diseases FOS Health sciences Wang, Boyi Nishimura, Yukitoshi Lyons, Larry Zou, Ying Carlson, Herbert Frey, Harald Mende, Stephen Analysis of close conjunctions between dayside polar cap airglow patches and flow channels by all-sky imager and DMSP ... |
topic_facet |
Biophysics Space Science Medicine Cell Biology Molecular Biology Neuroscience Physiology FOS Biological sciences Pharmacology Evolutionary Biology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Astronomical and Space Sciences not elsewhere classified Cancer Infectious Diseases FOS Health sciences |
description |
Abstract Recent imager and radar observations in the nightside polar cap have shown evidence that polar cap patches are associated with localized flow channels. To understand how flow channels propagate from the dayside auroral oval into the polar cap, we use an all-sky imager in Antarctica and DMSP (F13, F15, F16, F17 and F18) to determine properties of density and flows associated with dayside polar cap patches. We identified 50 conjunction events during the southern winter seasons of 2007–2011. In a majority (45) of events, longitudinally narrow flow enhancements directed anti-sunward are found to be collocated with the patches, have velocities (up to a few km/s) substantially larger than the large-scale background flows (~500 m/s) and have widths comparable to patch widths (~400 km). While the patches start with poleward moving auroral forms (PMAFs) as expected, many PMAFs propagate azimuthally away from the noon over a few hours of MLT, resulting in formation of polar cap patches quite far away from the ... |
format |
Article in Journal/Newspaper |
author |
Wang, Boyi Nishimura, Yukitoshi Lyons, Larry Zou, Ying Carlson, Herbert Frey, Harald Mende, Stephen |
author_facet |
Wang, Boyi Nishimura, Yukitoshi Lyons, Larry Zou, Ying Carlson, Herbert Frey, Harald Mende, Stephen |
author_sort |
Wang, Boyi |
title |
Analysis of close conjunctions between dayside polar cap airglow patches and flow channels by all-sky imager and DMSP ... |
title_short |
Analysis of close conjunctions between dayside polar cap airglow patches and flow channels by all-sky imager and DMSP ... |
title_full |
Analysis of close conjunctions between dayside polar cap airglow patches and flow channels by all-sky imager and DMSP ... |
title_fullStr |
Analysis of close conjunctions between dayside polar cap airglow patches and flow channels by all-sky imager and DMSP ... |
title_full_unstemmed |
Analysis of close conjunctions between dayside polar cap airglow patches and flow channels by all-sky imager and DMSP ... |
title_sort |
analysis of close conjunctions between dayside polar cap airglow patches and flow channels by all-sky imager and dmsp ... |
publisher |
figshare |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.3629051 https://springernature.figshare.com/collections/Analysis_of_close_conjunctions_between_dayside_polar_cap_airglow_patches_and_flow_channels_by_all-sky_imager_and_DMSP/3629051 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.6084/m9.figshare.c.3629051 |
_version_ |
1797573629598236672 |