Sudden commencement and sudden impulse absorption events at high latitudes
Journal Article
·
· Journal of Geophysical Research
Observavtions of sudden commencement absoprtion (sca) and sudden impulse absorption (sia) events at the south pole (74.2 deg invariant latitude) show that these events are concentrated on the dayside of the magnetosphere. Although the majority of the events were preceded by substorm activity in thc midnight sector, sca events were observed after prolonged magnetic quiet. This finding indicates the presence of a source, less conspicuous than substorm processes in the magnetotail, that supplies electrons in the region of quasi-trapping. (auth)
- Research Organization:
- Department of Physics, University of California, Berkeley, California, 94720
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-29-022160
- OSTI ID:
- 4346767
- Journal Information:
- Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: 25 Vol. 78; ISSN 0148-0227
- Publisher:
- American Geophysical Union
- Country of Publication:
- United States
- Language:
- English
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