تقرير
Low-Altitude Satellite Measurements of Pulsating Auroral Electrons
| العنوان: | Low-Altitude Satellite Measurements of Pulsating Auroral Electrons |
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| المؤلفون: | Samara, M, Michell, R. G, Redmon, R. J |
| المصدر: | Journal of Geophysical Research: Space Physics. 120(9) |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Space Sciences (General) |
| الوصف: | We present observations from the Defense Meteorological Satellite Program and Reimei satellites, where common-volume high-resolution ground-based auroral imaging data are available. These satellite overpasses of ground-based all-sky imagers reveal the specific features of the electron populations responsible for different types of pulsating aurora modulations. The energies causing the pulsating aurora mostly range from 3 keV to 20 keV but can at times extend up to 30 keV. The secondary, low-energy electrons (<1 keV) are diminished from the precipitating distribution when there are strong temporal variations in auroral intensity. There are often persistent spatial structures present inside regions of pulsating aurora, and in these regions there are secondary electrons in the precipitating populations. The reduction of secondary electrons is consistent with the strongly temporally varying pulsating aurora being associated with field-aligned currents and hence parallel potential drops of up to 1 kV. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| تدمد: | 2169-9402 |
| DOI: | 10.1002/2015JA021292 |
| URL الوصول: | https://ntrs.nasa.gov/citations/20170000983 |
| ملاحظات: | NNX12AE76G 673-007 NNG06EO90A NNX13AG07G NSF AGS-1456129 NSF AGS-1456161 |
| رقم الأكسشن: | edsnas.20170000983 |
| قاعدة البيانات: | NASA Technical Reports |
Full Text Finder | تدمد: | 21699402 |
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| DOI: | 10.1002/2015JA021292 |