GPS scintillations associated with cusp dynamics and polar cap patches
This paper investigates the relative scintillation level associated with cusp dynamics (including precipitation, flow shears, etc.) with and without the formation of polar cap patches around the cusp inflow region by the EISCAT Svalbard radar (ESR) and two GPS scintillation receivers. A series of po...
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ftdatacite:10.48550/arxiv.1710.06687 2023-05-15T16:04:44+02:00 GPS scintillations associated with cusp dynamics and polar cap patches Jin, Yaqi Moen, Jøran I. Oksavik, Kjellmar Spicher, Andres Clausen, Lasse B. N. Miloch, Wojciech J. 2017 https://dx.doi.org/10.48550/arxiv.1710.06687 https://arxiv.org/abs/1710.06687 unknown arXiv https://dx.doi.org/10.1051/swsc/2017022 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Space Physics physics.space-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 2017 ftdatacite https://doi.org/10.48550/arxiv.1710.06687 https://doi.org/10.1051/swsc/2017022 2022-04-01T10:16:28Z This paper investigates the relative scintillation level associated with cusp dynamics (including precipitation, flow shears, etc.) with and without the formation of polar cap patches around the cusp inflow region by the EISCAT Svalbard radar (ESR) and two GPS scintillation receivers. A series of polar cap patches were observed by the ESR between 8:40 and 10:20 UT on December 3, 2011. The polar cap patches combined with the auroral dynamics were associated with a significantly higher GPS phase scintillation level (up to 0.6 rad) than those observed for the other two alternatives, i.e., cusp dynamics without polar cap patches, and polar cap patches without cusp aurora. The cusp auroral dynamics without plasma patches were indeed related to GPS phase scintillations at a moderate level (up to 0.3 rad). The polar cap patches away from the active cusp were associated with sporadic and moderate GPS phase scintillations (up to 0.2 rad). The main conclusion is that the worst global navigation satellite system space weather events on the dayside occur when polar cap patches enter the polar cap and are subject to particle precipitation and flow shears, which is analogous to the nightside when polar cap patches exit the polar cap and enter the auroral oval. Text EISCAT Svalbard DataCite Metadata Store (German National Library of Science and Technology) Svalbard |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
Space Physics physics.space-ph FOS Physical sciences |
spellingShingle |
Space Physics physics.space-ph FOS Physical sciences Jin, Yaqi Moen, Jøran I. Oksavik, Kjellmar Spicher, Andres Clausen, Lasse B. N. Miloch, Wojciech J. GPS scintillations associated with cusp dynamics and polar cap patches |
topic_facet |
Space Physics physics.space-ph FOS Physical sciences |
description |
This paper investigates the relative scintillation level associated with cusp dynamics (including precipitation, flow shears, etc.) with and without the formation of polar cap patches around the cusp inflow region by the EISCAT Svalbard radar (ESR) and two GPS scintillation receivers. A series of polar cap patches were observed by the ESR between 8:40 and 10:20 UT on December 3, 2011. The polar cap patches combined with the auroral dynamics were associated with a significantly higher GPS phase scintillation level (up to 0.6 rad) than those observed for the other two alternatives, i.e., cusp dynamics without polar cap patches, and polar cap patches without cusp aurora. The cusp auroral dynamics without plasma patches were indeed related to GPS phase scintillations at a moderate level (up to 0.3 rad). The polar cap patches away from the active cusp were associated with sporadic and moderate GPS phase scintillations (up to 0.2 rad). The main conclusion is that the worst global navigation satellite system space weather events on the dayside occur when polar cap patches enter the polar cap and are subject to particle precipitation and flow shears, which is analogous to the nightside when polar cap patches exit the polar cap and enter the auroral oval. |
format |
Text |
author |
Jin, Yaqi Moen, Jøran I. Oksavik, Kjellmar Spicher, Andres Clausen, Lasse B. N. Miloch, Wojciech J. |
author_facet |
Jin, Yaqi Moen, Jøran I. Oksavik, Kjellmar Spicher, Andres Clausen, Lasse B. N. Miloch, Wojciech J. |
author_sort |
Jin, Yaqi |
title |
GPS scintillations associated with cusp dynamics and polar cap patches |
title_short |
GPS scintillations associated with cusp dynamics and polar cap patches |
title_full |
GPS scintillations associated with cusp dynamics and polar cap patches |
title_fullStr |
GPS scintillations associated with cusp dynamics and polar cap patches |
title_full_unstemmed |
GPS scintillations associated with cusp dynamics and polar cap patches |
title_sort |
gps scintillations associated with cusp dynamics and polar cap patches |
publisher |
arXiv |
publishDate |
2017 |
url |
https://dx.doi.org/10.48550/arxiv.1710.06687 https://arxiv.org/abs/1710.06687 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT Svalbard |
op_relation |
https://dx.doi.org/10.1051/swsc/2017022 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1710.06687 https://doi.org/10.1051/swsc/2017022 |
_version_ |
1766400365492699136 |