Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations
We examine the distribution and propagation of energy in the plasma sheet and lobes using observations and simulations for three substorms. The substorms occurred on 9 March 1995, 10 December 1996, and 27 August 2001 and have been simulated using the Lyon-Fedder-Mobarry magneto-hydrodynamic code. Al...
Published in: | Annales Geophysicae |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00030448 2023-05-15T16:29:17+02:00 Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations Brogl, S. Lopez, R. E. Wiltberger, M. Rassoul, H. K. 2009-04 electronic https://doi.org/10.5194/angeo-27-1717-2009 https://noa.gwlb.de/receive/cop_mods_00030448 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00030402/angeo-27-1717-2009.pdf https://angeo.copernicus.org/articles/27/1717/2009/angeo-27-1717-2009.pdf eng eng Copernicus Publications Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-27-1717-2009 https://noa.gwlb.de/receive/cop_mods_00030448 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00030402/angeo-27-1717-2009.pdf https://angeo.copernicus.org/articles/27/1717/2009/angeo-27-1717-2009.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2009 ftnonlinearchiv https://doi.org/10.5194/angeo-27-1717-2009 2022-02-08T22:47:12Z We examine the distribution and propagation of energy in the plasma sheet and lobes using observations and simulations for three substorms. The substorms occurred on 9 March 1995, 10 December 1996, and 27 August 2001 and have been simulated using the Lyon-Fedder-Mobarry magneto-hydrodynamic code. All three events occur over North America and show a clear substorm current wedge over the ground magnetometer chains of Alaska, Canada, and Greenland. The three simulations show the thinning of the plasma sheet during the growth phase of the event and an increase in the relative amount of thermal energy due to the compression of the plasma sheet. Generally, the total lobe energy, polar cap flux, and lobe magnetic field strength simultaneously increase during the growth phase, and polar cap flux and total lobe energy only start dropping at substorm onset, as measured by the CANOPUS magnetometer chain. Starting at time of onset and continuing throughout the expansion phase a transfer of magnetic energy from the lobes into the plasma sheet occurs, with the increase in the plasma sheet energy ranging from 30–40% of the energy that is released from the lobes. Article in Journal/Newspaper Greenland Alaska Niedersächsisches Online-Archiv NOA Canada Canopus ENVELOPE(161.517,161.517,-77.550,-77.550) Greenland Annales Geophysicae 27 4 1717 1727 |
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Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Brogl, S. Lopez, R. E. Wiltberger, M. Rassoul, H. K. Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations |
topic_facet |
article Verlagsveröffentlichung |
description |
We examine the distribution and propagation of energy in the plasma sheet and lobes using observations and simulations for three substorms. The substorms occurred on 9 March 1995, 10 December 1996, and 27 August 2001 and have been simulated using the Lyon-Fedder-Mobarry magneto-hydrodynamic code. All three events occur over North America and show a clear substorm current wedge over the ground magnetometer chains of Alaska, Canada, and Greenland. The three simulations show the thinning of the plasma sheet during the growth phase of the event and an increase in the relative amount of thermal energy due to the compression of the plasma sheet. Generally, the total lobe energy, polar cap flux, and lobe magnetic field strength simultaneously increase during the growth phase, and polar cap flux and total lobe energy only start dropping at substorm onset, as measured by the CANOPUS magnetometer chain. Starting at time of onset and continuing throughout the expansion phase a transfer of magnetic energy from the lobes into the plasma sheet occurs, with the increase in the plasma sheet energy ranging from 30–40% of the energy that is released from the lobes. |
format |
Article in Journal/Newspaper |
author |
Brogl, S. Lopez, R. E. Wiltberger, M. Rassoul, H. K. |
author_facet |
Brogl, S. Lopez, R. E. Wiltberger, M. Rassoul, H. K. |
author_sort |
Brogl, S. |
title |
Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations |
title_short |
Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations |
title_full |
Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations |
title_fullStr |
Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations |
title_full_unstemmed |
Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations |
title_sort |
studies of magnetotail dynamics and energy evolution during substorms using mhd simulations |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
https://doi.org/10.5194/angeo-27-1717-2009 https://noa.gwlb.de/receive/cop_mods_00030448 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00030402/angeo-27-1717-2009.pdf https://angeo.copernicus.org/articles/27/1717/2009/angeo-27-1717-2009.pdf |
long_lat |
ENVELOPE(161.517,161.517,-77.550,-77.550) |
geographic |
Canada Canopus Greenland |
geographic_facet |
Canada Canopus Greenland |
genre |
Greenland Alaska |
genre_facet |
Greenland Alaska |
op_relation |
Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-27-1717-2009 https://noa.gwlb.de/receive/cop_mods_00030448 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00030402/angeo-27-1717-2009.pdf https://angeo.copernicus.org/articles/27/1717/2009/angeo-27-1717-2009.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-27-1717-2009 |
container_title |
Annales Geophysicae |
container_volume |
27 |
container_issue |
4 |
container_start_page |
1717 |
op_container_end_page |
1727 |
_version_ |
1766018988127551488 |