ROSES ID: NNH08ZDA001N Selection Year: 2009 Duration: 3 years
Program Element: Focused Science Topic
Principal Investigator: Naiguo Lin
Affiliation(s): University of California, Berkeley
Summary:
The onset of magnetospheric substorm is an explosive increase of dissipation of the energy transmitted into the magnetosphere from the solar wind. The trigger of magnetospheric substorms has been suggested to be due to magnetic reconnection in the mid-magnetotail (~ 20-30 Re) or the disruption of currents in the near-tail (~10 Re). The subsequent development of the substorm is attributed to the propagation of these disturbances out from a single onset region. The models are still controversial, and often inconclusive. An alternative mechanism has been suggested that the substorm onset is a result of Alfvenic interactions in the global current system. The interaction occurs in multiple active regions throughout the tail current sheet. Compressional and shear Alfve n waves play important roles in the transport of energy through the magnetotail. Observations of occurrences and propagation of these disturbances will produce timing relationships between active regions dissimilar from that resulted from single region initiation, and have not been explored before.Performance Year | Reference | Investigation Type | Actions |
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1 | Lin, Naiguo; Frey, H. U.; Mende, S. B.; Mozer, F. ... | not set |
Performance Year | Reference | Actions |
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1 | Lysak, R. L.; Song, Y.; Lin, N.; (2009), Wave Propagat... | |
1 | Song, Y.; Lysak, R. L.; Lin, N.; (2009), Global Alfve... | |
1 | Lin, N.; Frey, H. U.; Mende, S. B.; Mozer, F. S.;Â... | |
1 | Song, Y.; Lysak, R. L.; Lin, N.; (2010), On the Cause ... | |
1 | Lysak, R. L.; Song, Y.; Lin, N.; (2010), MHD Wave Prop... | |
1 | Lin, N.; Lee, E.; McFadden, J. P.; Mozer, F.; Parks... |