Project abstract for group lysakrl

Numerical Modeling of Magnetosphere-Ionosphere Coupling

This group is creating models of the propagation of magnetohydrodynamics (MHD) waves through the magnetosphere. This effort includes three separate but related projects.

The first project is the development of a global three-dimensional MHD code to describe the interaction of MHD waves with the collisional ionosphere. This model includes the effects of Hall conductivity in the ionosphere as well as the finite magnetic zenith angle (the angle between the magnetic field direction and the vertical). This model also includes the ability to directly calculate ground magnetic signatures of these waves. This model will be extended to include 3-dimensional variations in the ionospheric conductivity and plasma density.

The second project is development of a more localized code that can describe the role of MHD waves in the development of parallel electric fields in the auroral zone. This model includes parallel electric fields due to electron pressure and inertia as well as a phenomenological model of Landau damping. We will implement this model in the full dipole coordinates used in the previous project.

The third project utilizates the TVD/MHD code developed by Professor Tom Jones (Astronomy) and his group to model the interactions in the earth’s magnetic tail during substorms. A major task during 2014 will be to develop a procedure for the development of MHD equilibria in the tail to use as initial conditions for the simulations. This will also facilitate our goal of coupling the tail model to the inner magnetosphere model described in the first project, above. 

A bibliography of this group’s publications acknowledging MSI is attached.