Relative timing of substorm processes as derived from multifluid/multiscale simulations: Internally driven substorms
نویسندگان
چکیده
منابع مشابه
Relative timing of substorm onset phenomena
[1] In this paper we examine the temporal ordering of midtail flow bursts, Pi2 pulsations, and auroral arc brightening at substorm onset. We present three substorm events for which the Geotail spacecraft was situated at local midnight, near the inner edge of the plasmasheet. We show that high-speed, convective Earthward directed plasma flows observed by Geotail occurred 1–3 min before auroral o...
متن کاملDeterminations of Relative Timing of Near-earth Substorm Onset and Tail Reconnection
Several studies have recently been performed that are directed towards determining the timing of near-Earth neutral line (NENL) formation in the tail relative to substorm onset. These studies are reviewed here. It is found that they are all consistent with each other and that they show that NENL formation does not occur prior to substorm onset in the inner plasma sheet. This result is inconsist...
متن کاملDynamical Simulations of a Phase Window Model of Relative Timing
We explore the hypothesis that intergestural phasing relations are implemented via coupling terms in a nonlinear dynamical systems model. We extend the dynamical model of relative phasing to include the possibility of attractor states that are characterized by phase windows, and contrast this behavior with standard models that display punctate relative phasing.
متن کاملInternally driven vs. externally cued movement selection: a study on the timing of brain activity.
Brain imaging studies in man and single cell recordings in monkey have suggested that medial supplementary motor areas (SMA) and lateral pre-motor areas (PMA) are functionally dissociated concerning their involvement in internally driven and externally cued movements. This dichotomy, however, seems to be relative rather than absolute. Here, we searched for further evidence of relative differenc...
متن کاملWINDMI Optimization and Performance Validation
An optimization study of the prediction performance for the substorm model WINDMI is presented. The model is based on the Earth’s magnetospheric dynamics and provides a low order description of the nightside energy loading and unloading that takes place during the substorm process. Previous studies of this model on isolated substorms have indicated that it can be a good predictor of solar wind ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 2009
ISSN: 0148-0227
DOI: 10.1029/2008ja013750