Solar proton events: History, statistics and predictions. (Reannouncement with new availability information)
Technical Report
·
OSTI ID:210773
Energetic solar protons can adversely affect the solar-terrestrial environment. For this reason a knowledge of solar proton events, and the expected flux and fluence, is necessary to adequately predict their occurrence and project their related consequences. Solar proton events have been recorded at the earth since 1942 although the detection techniques varied considerably over the past 50 years. From 1942 to 1957 the identification of solar proton events was limited to very high energy events. This situation improved over the next decade after which lower energy solar proton events became routinely identified by satellite measurements. Even though the detection threshold differed between the 19th and more recent cycles, more than 280 solar proton events with a flux of over 10 protons with energy > 10 MeV have been recorded at the earth since 1955. Solar cycle 22 has been noteworthy for the many large solar proton events that have occurred.
- Research Organization:
- Phillips Lab., Hanscom AFB, MA (United States)
- OSTI ID:
- 210773
- Report Number(s):
- AD-A--280024/1/XAB
- Country of Publication:
- United States
- Language:
- English
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