Observed and Simulated Depletion Layers with Southward IMF
AIR FORCE RESEARCH LAB HANSCOM AFB MA SPACE VEHICLES DIRECTORATE
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We present observations from the Polar satellite that confirm the existence of two types of depletion layers predicted under southward interplanetary magnetic field IMF conditions in magnetohydrodynamic simulations. The first depletion type occurs along the stagnation line when IMF BX andor dipole tilt areis present. Magnetic merging occurred away from the equator maynard, et al., 2003 and flux pile-ups developed while the field lines drape to the high-latitude merging sites. This high-shear type of depletion is consistent with the depletion layer model suggested by Zwan and Wolf 1976 for low-shear northward IMF conditions.
- Plasma Physics and Magnetohydrodynamics