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Article: SAPS in the 17 March 2013 Storm Event: Initial Results From the Coupled Magnetosphere‐Ionosphere‐Thermosphere Model

TitleSAPS in the 17 March 2013 Storm Event: Initial Results From the Coupled Magnetosphere‐Ionosphere‐Thermosphere Model
Authors
KeywordsSAPS
LFM
TIEGCM
coupled model
St. Patrick's day storm
Issue Date2019
PublisherAmerican Geophysical Union, co-published with Wiley. The Journal's web site is located at http://agupubs.onlinelibrary.wiley.com/agu/jgr/journal/10.1002/%28ISSN%292156-2202/
Citation
Journal of Geophysical Research, 2019, v. 124 n. 7, p. 6212-6225 How to Cite?
AbstractSubauroral polarization stream (SAPS) is latitudinally narrow flow channels of large westward plasma drifts in the subauroral ionosphere. In this study, the global structure and dynamic evolution of SAPS are investigated by using the Coupled Magnetosphere‐Ionosphere‐Thermosphere model with ring current extension, namely, the Lyon‐Fedder‐Mobarry‐Thermosphere Ionosphere Electrodynamics General Circulation Model‐Rice Convection Model, to simulate the 2013 St. Patrick's Day storm event. This is the first time that the global distribution and temporal evolution of SAPS are investigated using first‐principle models. The model shows a strong westward ion drift channel formed equatorward of the auroral electron precipitation boundary on the duskside, which is identified as the SAPS structure. The simulated ion drift velocity and auroral electron precipitation sampled along the trajectory of the Defense Meteorological Satellite Program F18 satellite are in good agreement with the satellite measurements. SAPS initiate in the predusk sector when the interplanetary magnetic field turns southward. SAPS latitude generally decreases with magnetic local time from dusk to midnight. The SAPS channel shows wedge, inverse wedge, and crescent morphologies during the storm and becomes discontinuous when the interplanetary magnetic field is weakly southward. The SAPS mean latitude has a correlation coefficient of 0.77 with the Dst index. The mean latitude moves equatorward, and the flow channel broadens in the storm main phase. The simulation results illustrate both the global distribution and highly dynamic behavior of SAPS that are not readily apparent from the observation data.
Persistent Identifierhttp://hdl.handle.net/10722/274980
ISSN
2015 Impact Factor: 3.318
2015 SCImago Journal Rankings: 2.310
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLin, D-
dc.contributor.authorWang, W-
dc.contributor.authorScales, WA-
dc.contributor.authorPham, K-
dc.contributor.authorLiu, J-
dc.contributor.authorZhang, B-
dc.contributor.authorMerkin, V-
dc.contributor.authorShi, X-
dc.contributor.authorKunduri, B-
dc.contributor.authorMaimaiti, M-
dc.date.accessioned2019-09-10T02:32:54Z-
dc.date.available2019-09-10T02:32:54Z-
dc.date.issued2019-
dc.identifier.citationJournal of Geophysical Research, 2019, v. 124 n. 7, p. 6212-6225-
dc.identifier.issn0148-0227-
dc.identifier.urihttp://hdl.handle.net/10722/274980-
dc.description.abstractSubauroral polarization stream (SAPS) is latitudinally narrow flow channels of large westward plasma drifts in the subauroral ionosphere. In this study, the global structure and dynamic evolution of SAPS are investigated by using the Coupled Magnetosphere‐Ionosphere‐Thermosphere model with ring current extension, namely, the Lyon‐Fedder‐Mobarry‐Thermosphere Ionosphere Electrodynamics General Circulation Model‐Rice Convection Model, to simulate the 2013 St. Patrick's Day storm event. This is the first time that the global distribution and temporal evolution of SAPS are investigated using first‐principle models. The model shows a strong westward ion drift channel formed equatorward of the auroral electron precipitation boundary on the duskside, which is identified as the SAPS structure. The simulated ion drift velocity and auroral electron precipitation sampled along the trajectory of the Defense Meteorological Satellite Program F18 satellite are in good agreement with the satellite measurements. SAPS initiate in the predusk sector when the interplanetary magnetic field turns southward. SAPS latitude generally decreases with magnetic local time from dusk to midnight. The SAPS channel shows wedge, inverse wedge, and crescent morphologies during the storm and becomes discontinuous when the interplanetary magnetic field is weakly southward. The SAPS mean latitude has a correlation coefficient of 0.77 with the Dst index. The mean latitude moves equatorward, and the flow channel broadens in the storm main phase. The simulation results illustrate both the global distribution and highly dynamic behavior of SAPS that are not readily apparent from the observation data.-
dc.languageeng-
dc.publisherAmerican Geophysical Union, co-published with Wiley. The Journal's web site is located at http://agupubs.onlinelibrary.wiley.com/agu/jgr/journal/10.1002/%28ISSN%292156-2202/-
dc.relation.ispartofJournal of Geophysical Research-
dc.rightsJournal of Geophysical Research. Copyright © American Geophysical Union, co-published with Wiley.-
dc.rightsPublished version Copyright [2019] American Geophysical Union. To view the published open abstract, go to https://doi.org/10.1029/2019JA026698-
dc.subjectSAPS-
dc.subjectLFM-
dc.subjectTIEGCM-
dc.subjectcoupled model-
dc.subjectSt. Patrick's day storm-
dc.titleSAPS in the 17 March 2013 Storm Event: Initial Results From the Coupled Magnetosphere‐Ionosphere‐Thermosphere Model-
dc.typeArticle-
dc.identifier.emailZhang, B: binzh@hku.hk-
dc.identifier.authorityZhang, B=rp02366-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1029/2019JA026698-
dc.identifier.scopuseid_2-s2.0-85069740060-
dc.identifier.hkuros304695-
dc.identifier.volume124-
dc.identifier.issue7-
dc.identifier.spage6212-
dc.identifier.epage6225-
dc.identifier.isiWOS:000482985600080-
dc.publisher.placeUnited States-

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