Please use this identifier to cite or link to this item: http://localhost:80/handle/1956/3585
Title: The Hall current system revealed as a statistical significant pattern during fast flows
subject: Magnetospheric physics;VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Rom- og plasmafysikk: 437
Publisher: European Geosciences Union
Description: We have examined the dawn-dusk component of the magnetic field, BY , in the night side current sheet during fast flows in the neutral sheet. 237 h of Cluster data from the plasma sheet between 2 August 2002 and 2 October 2002 have been analysed. The spatial pattern of BY as a function of the distance from the centre of the current sheet has been estimated by using a Harris current sheet model. We have used the average slopes of these patterns to estimate earthward and tailward currents. For earthward fast flows there is a tailward current in the inner central plasma sheet and an earthward current in the outer central plasma sheet on average. For tailward fast flows the currents are oppositely directed. These observations are interpreted as signatures of Hall currents in the reconnection region or as field aligned currents which are connected with these currents. Although fast flows often are associated with a dawn-dusk current wedge, we believe that we have managed to filter out such currents from our statistical patterns.
Peer reviewed
Published version
URI: http://localhost:80/handle/1956/3585
More Information: Annales Geophysicae 26(11): 3429-3437
http://www.ann-geophys.net/26/3429/2008/angeo-26-3429-2008.html
http://hdl.handle.net/1956/3585
Appears in Collections:Department of Earth Science

Files in This Item:
Click on the URI links for accessing contents.
Title: The Hall current system revealed as a statistical significant pattern during fast flows
subject: Magnetospheric physics;VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Rom- og plasmafysikk: 437
Publisher: European Geosciences Union
Description: We have examined the dawn-dusk component of the magnetic field, BY , in the night side current sheet during fast flows in the neutral sheet. 237 h of Cluster data from the plasma sheet between 2 August 2002 and 2 October 2002 have been analysed. The spatial pattern of BY as a function of the distance from the centre of the current sheet has been estimated by using a Harris current sheet model. We have used the average slopes of these patterns to estimate earthward and tailward currents. For earthward fast flows there is a tailward current in the inner central plasma sheet and an earthward current in the outer central plasma sheet on average. For tailward fast flows the currents are oppositely directed. These observations are interpreted as signatures of Hall currents in the reconnection region or as field aligned currents which are connected with these currents. Although fast flows often are associated with a dawn-dusk current wedge, we believe that we have managed to filter out such currents from our statistical patterns.
Peer reviewed
Published version
URI: http://localhost:80/handle/1956/3585
More Information: Annales Geophysicae 26(11): 3429-3437
http://www.ann-geophys.net/26/3429/2008/angeo-26-3429-2008.html
http://hdl.handle.net/1956/3585
Appears in Collections:Department of Earth Science

Files in This Item:
Click on the URI links for accessing contents.
Title: The Hall current system revealed as a statistical significant pattern during fast flows
subject: Magnetospheric physics;VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Rom- og plasmafysikk: 437
Publisher: European Geosciences Union
Description: We have examined the dawn-dusk component of the magnetic field, BY , in the night side current sheet during fast flows in the neutral sheet. 237 h of Cluster data from the plasma sheet between 2 August 2002 and 2 October 2002 have been analysed. The spatial pattern of BY as a function of the distance from the centre of the current sheet has been estimated by using a Harris current sheet model. We have used the average slopes of these patterns to estimate earthward and tailward currents. For earthward fast flows there is a tailward current in the inner central plasma sheet and an earthward current in the outer central plasma sheet on average. For tailward fast flows the currents are oppositely directed. These observations are interpreted as signatures of Hall currents in the reconnection region or as field aligned currents which are connected with these currents. Although fast flows often are associated with a dawn-dusk current wedge, we believe that we have managed to filter out such currents from our statistical patterns.
Peer reviewed
Published version
URI: http://localhost:80/handle/1956/3585
More Information: Annales Geophysicae 26(11): 3429-3437
http://www.ann-geophys.net/26/3429/2008/angeo-26-3429-2008.html
http://hdl.handle.net/1956/3585
Appears in Collections:Department of Earth Science

Files in This Item:
Click on the URI links for accessing contents.