High latitude,outer zone boundary observations of electrons and protons |
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| Authors: | Herbert H Sauer |
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| Institution: | Space Environment Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80302, U.S.A. |
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| Abstract: | The diurnal variation of the high latitude outer zone boundary at 1400km has been determined for electrons ?140keV electrons, and for protons in two energy intervals: 0.56?E?1.1 MeV, 1.1?E?3.2 MeV, from detectors aboard the NOAA-2 satellite. The dependence of the 140 keV electron boundary on Dst has been examined as well?. A wel?l defined correlation of boundary position with Dst is found to exist during the main phase of disturbances, together with an evident local time dependence. All the boundaries are found to be consistent witn the supposition of adiabatic drift and demonstrate the stability of the boundary position over approximately ten years of comparable observation. No statistically significant hemispheric differences in boundary location were observed to occur. |
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