Physics
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsm31b..10o&link_type=abstract
American Geophysical Union, Spring Meeting 2002, abstract #SM31B-10
Physics
2708 Current Systems (2409), 2740 Magnetospheric Configuration And Dynamics, 2744 Magnetotail, 2764 Plasma Sheet, 2788 Storms And Substorms
Scientific paper
The present paper addresses tailward expansion of the current disruption region by cross-examining in situ measurements and the result of a global MHD simulation. The event selected occurred on November 24, 1996, which was chosen as an NSF/GEM substorm event and has been studied extensively (see the companion paper set in the 2001 January issue of JGR). In this event both Interball and IMP 8 satellites were located in the tail lobe at (-26, 1, 9) and (-36, -3, 10) RE, respectively, in GSM and observed Bx and Bz to change in the way that Ohtani et al. [JGR, 97, 3129, 1992] interpreted in terms of tailward expansion of the current disruption region. The interpretation is supported by a time delay of the IMP 8 from the Interball signatures. The global MHD simulation conducted by Raeder et al. [JGR, 106, 381, 2001] for this event has reproduced tailward propagation of dipolarization, which provides an ideal opportunity to examine the development of tail current disruption in the global context. It is found that reduction of the local tail current intensity is preceded by local intensification, which also propagates tailward. This tail current intensification can be attributed to the decrease of Bz, which is caused by tail current reduction farther earthward. It is therefore suggested that not only the tailward expansion of current disruption but also that of the preceding current intensification are related to the substorm expansion phase.
Ohtani Shin
Raeder Joachim
No associations
LandOfFree
Tailward Expansion of the Current Disruption Region: New Insights from a Global MHD Simulation and Comparison with Satellite Observations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Tailward Expansion of the Current Disruption Region: New Insights from a Global MHD Simulation and Comparison with Satellite Observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tailward Expansion of the Current Disruption Region: New Insights from a Global MHD Simulation and Comparison with Satellite Observations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1724495