No full text
Unpublished conference/Abstract (Scientific congresses and symposiums)
FUV remote sensing of the isotropic boundary and magnetotail stretching
Blockx, Caroline; Gérard, Jean-Claude; Meurant, M. et al.
2004AGU Fall meeting
Editorial reviewed
 

Files


Full Text
No document available.

Send to



Details



Keywords :
2704 Auroral phenomena (2407); 2736 Magnetosphere/ionosphere interactions; 2748 Magnetotail boundary layers
Abstract :
[en] Several studies attempted to identify the Isotropic Boundary (IB) defining the limit between the adiabatic and non-adiabatic trajectories of the trapped protons along closed magnetic field lines. This boundary is an indicator of the amount of magnetic field lines' stretching in the magnetotail. These studies are based on in situ measurements, resulting in spatially and temporally restricted samples. To avoid this limitation, we propose to use global data obtained with the FUV-SI12 proton imager on board IMAGE spacecraft. We determine at each magnetic local time the position of an optical boundary equivalent to IB and thereby the stretching of the magnetic field lines. We show that the correspondence between the latitude of the maximum proton precipitation observed by SI12 and the IB measured by DMSP satellites is statistically established and depends on the magnetic local time. The relation between the position of the maximum proton precipitation as well as the intensity of this maximum and the magnetic field's distortion is determined by comparison with GOES-8 data. We thus suggest that SI12 can be used as a tool for the global determination of the isotropic boundary and to monitor the amount of stretching in the magnetotail.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Blockx, Caroline ;  Université de Liège - ULiège > Aquapôle
Gérard, Jean-Claude  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Meurant, M.;  Laboratoire de Physique Atmospherique et Planetaire, Allee du 6 Aout, 17, Bat. B5c, Liege, 4000 Belgium
Hubert, Benoît  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Coumans, Valérie ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Language :
English
Title :
FUV remote sensing of the isotropic boundary and magnetotail stretching
Publication date :
01 December 2004
Event name :
AGU Fall meeting
Event organizer :
AMerican Geophysical Union
Event place :
San Francisco, United States
Event date :
2004
Audience :
International
Peer reviewed :
Editorial reviewed
Available on ORBi :
since 27 December 2009

Statistics


Number of views
46 (5 by ULiège)
Number of downloads
0 (0 by ULiège)

Bibliography


Similar publications



Contact ORBi