Statistics – Computation
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm14a..05g&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SM14A-05
Statistics
Computation
2730 Magnetosphere: Inner, 2740 Magnetospheric Configuration And Dynamics, 2768 Plasmasphere, 2774 Radiation Belts, 2778 Ring Current
Scientific paper
The formation and subsequent development of plasmaspheric plumes in a given convection event is well characterized by a series of distinct phases, each triggered by a change in the strength of global magnetospheric convection. For example, after a prolonged quiet period, an increase in convection strength triggers erosion, and the formation of a sunward-pointing plume that typically spans at least a few hours of dayside magnetic local time (MLT). On the other hand, a convection decrease causes a pre-existing plume to begin rotating eastward, eventually becoming wrapped around the main plasmaspheric torus. Predicted by computational models, plume phases have since proven to be a consistent feature of plasmaspheric dynamics in numerous observations made by the Imager for Magnetopause-to-Aurora Global Exploration (IMAGE) spacecraft during the years 2000-2005. However, currently-existing empirical models for the plasmasphere do not include plumes or plume phases. We present first results of an empirical model of plume density and location using (respectively) measurements by the IMAGE radio plasma imager (RPI) and extreme ultraviolet (EUV) instruments. This new model framework differs differs from current models in two ways. First, it represents the plasmapause as a multi-valued function of L versus MLT. Second, it incorporates the concept of plume phases by parameterizing plasmaspheric density based on superposed epoch analysis. An empirical characterization of plasmaspheric plume density and location is an important step toward better knowledge of the spatial and temporal dependence of critical wave-particle interactions affecting ring current ions and outer radiation belt electrons.
Denton Richard E.
Goldstein Jeffrey Jay
Sandel Bill R.
No associations
LandOfFree
Empirical Characterization of Plasmaspheric Plumes 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 Empirical Characterization of Plasmaspheric Plumes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Empirical Characterization of Plasmaspheric Plumes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1093216