Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations
Magnetospheric physics (Magnetotail; Plasma sheet; Storms and substorms) 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 b...
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Online Access: | http://hdl.handle.net/11141/1964 https://doi.org/10.5194/angeo-27-1717-2009 |
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ftfloridainsttec:oai:repository.lib.fit.edu:11141/1964 2023-10-09T21:52:01+02:00 Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations Brogl, S. Lopez, Ramon E. Wiltberger, Michael J. Rassoul, Hamid K. 2009-04-08 http://hdl.handle.net/11141/1964 https://doi.org/10.5194/angeo-27-1717-2009 en_US eng Brogl, S., Lopez, R. E., Wiltberger, M., & Rassoul, H. K. (2009). Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations. Annales Geophysicae, 27(4), 1717-1727. http://hdl.handle.net/11141/1964 doi:10.5194/angeo-27-1717-2009 © Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License. https://creativecommons.org/licenses/by/3.0/ Article 2009 ftfloridainsttec https://doi.org/10.5194/angeo-27-1717-2009 2023-09-22T09:36:25Z Magnetospheric physics (Magnetotail; Plasma sheet; Storms and substorms) 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 The Scholarship Repository of Florida Institute of Technology Canada Canopus ENVELOPE(161.517,161.517,-77.550,-77.550) Greenland Annales Geophysicae 27 4 1717 1727 |
institution |
Open Polar |
collection |
The Scholarship Repository of Florida Institute of Technology |
op_collection_id |
ftfloridainsttec |
language |
English |
description |
Magnetospheric physics (Magnetotail; Plasma sheet; Storms and substorms) 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, Ramon E. Wiltberger, Michael J. Rassoul, Hamid K. |
spellingShingle |
Brogl, S. Lopez, Ramon E. Wiltberger, Michael J. Rassoul, Hamid K. Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations |
author_facet |
Brogl, S. Lopez, Ramon E. Wiltberger, Michael J. Rassoul, Hamid 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 |
publishDate |
2009 |
url |
http://hdl.handle.net/11141/1964 https://doi.org/10.5194/angeo-27-1717-2009 |
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 |
Brogl, S., Lopez, R. E., Wiltberger, M., & Rassoul, H. K. (2009). Studies of magnetotail dynamics and energy evolution during substorms using MHD simulations. Annales Geophysicae, 27(4), 1717-1727. http://hdl.handle.net/11141/1964 doi:10.5194/angeo-27-1717-2009 |
op_rights |
© Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License. https://creativecommons.org/licenses/by/3.0/ |
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 |
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1779315146857906176 |