Geomagnetic Disturbances That Cause GICs: Investigating Their Interhemispheric Conjugacy and Control by IMF Orientation
Abstract Nearly all studies of impulsive geomagnetic disturbances (GMDs, also known as magnetic perturbation events MPEs) that can produce dangerous geomagnetically induced currents (GICs) have used data from the northern hemisphere. In this study, we investigated GMD occurrences during the first 6...
Published in: | Journal of Geophysical Research: Space Physics |
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Language: | English |
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2022
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Online Access: | https://orbit.dtu.dk/en/publications/e997707e-a13e-4d7a-a2d5-142d7d60c7e4 https://doi.org/10.1029/2022JA030580 https://backend.orbit.dtu.dk/ws/files/292396531/JGR_Space_Physics_2022_Engebretson_Geomagnetic_Disturbances_That_Cause_GICs_Investigating_Their_Interhemispheric_2_.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/e997707e-a13e-4d7a-a2d5-142d7d60c7e4 2024-05-19T07:30:51+00:00 Geomagnetic Disturbances That Cause GICs: Investigating Their Interhemispheric Conjugacy and Control by IMF Orientation Engebretson, Mark J. Simms, Laura E. Pilipenko, Viacheslav A. Bouayed, Lilia Moldwin, Mark B. Weygand, James M. Hartinger, Michael D. Xu, Zhonghua Clauer, C. Robert Coyle, Shane Willer, Anna N. Freeman, Mervyn P. Gerrard, Andy J. 2022 application/pdf https://orbit.dtu.dk/en/publications/e997707e-a13e-4d7a-a2d5-142d7d60c7e4 https://doi.org/10.1029/2022JA030580 https://backend.orbit.dtu.dk/ws/files/292396531/JGR_Space_Physics_2022_Engebretson_Geomagnetic_Disturbances_That_Cause_GICs_Investigating_Their_Interhemispheric_2_.pdf eng eng https://orbit.dtu.dk/en/publications/e997707e-a13e-4d7a-a2d5-142d7d60c7e4 info:eu-repo/semantics/openAccess Engebretson , M J , Simms , L E , Pilipenko , V A , Bouayed , L , Moldwin , M B , Weygand , J M , Hartinger , M D , Xu , Z , Clauer , C R , Coyle , S , Willer , A N , Freeman , M P & Gerrard , A J 2022 , ' Geomagnetic Disturbances That Cause GICs: Investigating Their Interhemispheric Conjugacy and Control by IMF Orientation ' , Journal of Geophysical Research: Space Physics , vol. 127 , no. 10 , e2022JA030580 . https://doi.org/10.1029/2022JA030580 Geomagnetic disturbances Magnetic perturbation events Geomagnetically induced currents GIC Magnetic conjugacy Substorms Geomagnetic storms article 2022 ftdtupubl https://doi.org/10.1029/2022JA030580 2024-05-01T00:54:09Z Abstract Nearly all studies of impulsive geomagnetic disturbances (GMDs, also known as magnetic perturbation events MPEs) that can produce dangerous geomagnetically induced currents (GICs) have used data from the northern hemisphere. In this study, we investigated GMD occurrences during the first 6 months of 2016 at four magnetically conjugate high latitude station pairs using data from the Greenland West Coast magnetometer chain and from Antarctic stations in the conjugate AAL-PIP magnetometer chain. Events for statistical analysis and four case studies were selected from Greenland/AAL-PIP data by detecting the presence of >6 nT/s derivatives of any component of the magnetic field at any of the station pairs. For case studies, these chains were supplemented by data from the BAS-LPM chain in Antarctica as well as Pangnirtung and South Pole in order to extend longitudinal coverage to the west. Amplitude comparisons between hemispheres showed (a) a seasonal dependence (larger in the winter hemisphere), and (b) a dependence on the sign of the By component of the interplanetary magnetic field (IMF): GMDs were larger in the north (south) when IMF By was >0 ( Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland South pole South pole Technical University of Denmark: DTU Orbit Journal of Geophysical Research: Space Physics 127 10 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Geomagnetic disturbances Magnetic perturbation events Geomagnetically induced currents GIC Magnetic conjugacy Substorms Geomagnetic storms |
spellingShingle |
Geomagnetic disturbances Magnetic perturbation events Geomagnetically induced currents GIC Magnetic conjugacy Substorms Geomagnetic storms Engebretson, Mark J. Simms, Laura E. Pilipenko, Viacheslav A. Bouayed, Lilia Moldwin, Mark B. Weygand, James M. Hartinger, Michael D. Xu, Zhonghua Clauer, C. Robert Coyle, Shane Willer, Anna N. Freeman, Mervyn P. Gerrard, Andy J. Geomagnetic Disturbances That Cause GICs: Investigating Their Interhemispheric Conjugacy and Control by IMF Orientation |
topic_facet |
Geomagnetic disturbances Magnetic perturbation events Geomagnetically induced currents GIC Magnetic conjugacy Substorms Geomagnetic storms |
description |
Abstract Nearly all studies of impulsive geomagnetic disturbances (GMDs, also known as magnetic perturbation events MPEs) that can produce dangerous geomagnetically induced currents (GICs) have used data from the northern hemisphere. In this study, we investigated GMD occurrences during the first 6 months of 2016 at four magnetically conjugate high latitude station pairs using data from the Greenland West Coast magnetometer chain and from Antarctic stations in the conjugate AAL-PIP magnetometer chain. Events for statistical analysis and four case studies were selected from Greenland/AAL-PIP data by detecting the presence of >6 nT/s derivatives of any component of the magnetic field at any of the station pairs. For case studies, these chains were supplemented by data from the BAS-LPM chain in Antarctica as well as Pangnirtung and South Pole in order to extend longitudinal coverage to the west. Amplitude comparisons between hemispheres showed (a) a seasonal dependence (larger in the winter hemisphere), and (b) a dependence on the sign of the By component of the interplanetary magnetic field (IMF): GMDs were larger in the north (south) when IMF By was >0 ( |
format |
Article in Journal/Newspaper |
author |
Engebretson, Mark J. Simms, Laura E. Pilipenko, Viacheslav A. Bouayed, Lilia Moldwin, Mark B. Weygand, James M. Hartinger, Michael D. Xu, Zhonghua Clauer, C. Robert Coyle, Shane Willer, Anna N. Freeman, Mervyn P. Gerrard, Andy J. |
author_facet |
Engebretson, Mark J. Simms, Laura E. Pilipenko, Viacheslav A. Bouayed, Lilia Moldwin, Mark B. Weygand, James M. Hartinger, Michael D. Xu, Zhonghua Clauer, C. Robert Coyle, Shane Willer, Anna N. Freeman, Mervyn P. Gerrard, Andy J. |
author_sort |
Engebretson, Mark J. |
title |
Geomagnetic Disturbances That Cause GICs: Investigating Their Interhemispheric Conjugacy and Control by IMF Orientation |
title_short |
Geomagnetic Disturbances That Cause GICs: Investigating Their Interhemispheric Conjugacy and Control by IMF Orientation |
title_full |
Geomagnetic Disturbances That Cause GICs: Investigating Their Interhemispheric Conjugacy and Control by IMF Orientation |
title_fullStr |
Geomagnetic Disturbances That Cause GICs: Investigating Their Interhemispheric Conjugacy and Control by IMF Orientation |
title_full_unstemmed |
Geomagnetic Disturbances That Cause GICs: Investigating Their Interhemispheric Conjugacy and Control by IMF Orientation |
title_sort |
geomagnetic disturbances that cause gics: investigating their interhemispheric conjugacy and control by imf orientation |
publishDate |
2022 |
url |
https://orbit.dtu.dk/en/publications/e997707e-a13e-4d7a-a2d5-142d7d60c7e4 https://doi.org/10.1029/2022JA030580 https://backend.orbit.dtu.dk/ws/files/292396531/JGR_Space_Physics_2022_Engebretson_Geomagnetic_Disturbances_That_Cause_GICs_Investigating_Their_Interhemispheric_2_.pdf |
genre |
Antarc* Antarctic Antarctica Greenland South pole South pole |
genre_facet |
Antarc* Antarctic Antarctica Greenland South pole South pole |
op_source |
Engebretson , M J , Simms , L E , Pilipenko , V A , Bouayed , L , Moldwin , M B , Weygand , J M , Hartinger , M D , Xu , Z , Clauer , C R , Coyle , S , Willer , A N , Freeman , M P & Gerrard , A J 2022 , ' Geomagnetic Disturbances That Cause GICs: Investigating Their Interhemispheric Conjugacy and Control by IMF Orientation ' , Journal of Geophysical Research: Space Physics , vol. 127 , no. 10 , e2022JA030580 . https://doi.org/10.1029/2022JA030580 |
op_relation |
https://orbit.dtu.dk/en/publications/e997707e-a13e-4d7a-a2d5-142d7d60c7e4 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2022JA030580 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
127 |
container_issue |
10 |
_version_ |
1799467944689795072 |