AAS Meeting #194 - Chicago, Illinois, May/June 1999
Session 78. TRACE and Coronal Heating
Solar, Display, Wednesday, June 2, 1999, 10:00am-6:30pm, Southeast Exhibit Hall

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[78.10] Studying Solar MHD Wave Propagation in Two Dimensions

S.W. McIntosh (NCAR/HAO), T.J. Bogdan (NCAR/HAO)

We present preliminary results on simulations of Magnetohydrodynamic (MHD) wave propagation in a two dimensional stratified model of the upper solar atmosphere. The simulations presented are obtained using the High\--Order Godunov scheme of Zachary, Malagoli & Colella (1994).

These simulations allow us to analyze quantitatively the coupling, resonances and absorption of MHD waves in a stratified plasma such as that of the Sun. In particular, we are able to observe the dynamic evolution of energy and momentum balances of the model atmosphere in response the wave propagation. In addition, we are able to study the phenomenology of MHD wave passage through particular regions of interest.

We will concentrate mostly upon the physical manifestation of MHD waves propagating in ``network'' and ``internetwork'' regions and study the effect on physical parameters and the basic field structure imposed at outset. We believe that such simulations are important in that they compliment the high quality/temporal resolution data currently being acquired by the SOHO and TRACE spacecraft.

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