What determines and how to distinguish different magnetotail dynamical modes?

Details What determines and how to distinguish different magnetotail dynamical modes? What determines and how to distinguish different magnetotail dynamical modes?

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm31c..02s&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SM31C-02

Physics

2740 Magnetospheric Configuration And Dynamics

Scientific paper

The question why the strongly driven magnetotail in similar conditions may respond via either loading/unloading substorm mode or via steady dissipation stays puzzling for many years. Here we discuss the essential differences between these states found so far, the possible physics which controls the different dynamics, as well as the set/combination of observed parameters. We briefly summarize the predictions of the most well-articulated scenario, in which the spatially-extended close flux tube region (plasma sheet) controls the global plasma transport mode via the mechanism of interchange-type motions, discuss how it can be tested using Themis and show the first results of corresponding Themis-based analyses. We also discuss the tail open magnetic flux as the global parameter which can help in characterizing the magnetotail state and identify the dynamical mode.

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