ISTP/GGS Modelling Mesoscale Processes in theGlobal Geospace System

Mary Hudson, P. I.

Dartmouth ISTP/GGS Theory Team: Understanding the Storm-Time Magnetosphere

The Dartmouth-Berkeley-Minnesota theory team has identified a number of mesoscale phenomena to be investigated as part of the GGS program, including: (1) effects of upstream density fluctuations on magnetopause dynamics, (2) three-dimensional reconnection, (3) magnetopause depletion layer studies, (4) ring current interaction with Pc 1 and Pc 5 waves, (5) generation of ion Larmor-scale current layers in the near Earth plasmasheet, (6) test particle studies in the magnetotail, (7) simulation of magnetosphere-ionosphere coupling including effects of kinetic Alfven waves, and (8) auroral acceleration region studies of the effects of kinetic Alfven waves on particle distribution functions. A broad range of techniques are implemented including ideal and reduced MHD, two fluid, hybrid, particle-in-cell, and test particle simulations. Detailed comparison of simulation results with GGS satellite and ground based data are being undertaken. Simulations 1, 2, 3, and 4 are available.

The following paper's are available:

Simulation of Radiation Belt Dynamics Driven by Solar Wind Variations

Increase in Relativitsic Electron Flux in the Inner Magnetosphere: ULF Wave Mode Structure

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