High-energy outer radiation belt dynamic modeling
- Lockheed Palo Alto Research Laboratory, 3251 Hanover St., Palo Alto, CA 94304 (US)
Specification of the average high-energy radiation belt environment in terms of phenomenological montages of satellite measurements has been available for some time. However, for many reasons both scientific and applicational (including concerns for a better understanding of the high-energy radiatino background in space), it is desirable to model the dynamic response of the high-energy radiation belts to sources, to losses, and to geomagnetic activity. Indeed, in the outer electron belt, this is the only mode of modeling that can handle the large intensity fluctuations. Anticipating the dynamic modeling objective of the upcoming Combined Release and Radiation Effects Satellite (CRRES) program, we have undertaken to initiate the study of the various essential elements in constructing a dynamic radiation belt model based on interpretation of satellite data according to simultaneous radial and pitch-angle diffusion theory. In order to prepare for the dynamic radiation belt modeling based on a large data set spanning a relatively large segment of {ital L}-values, such as required for CRRES, it is important to study a number of test cases with data of similar characteristics but more restricted in space-time coverage. In this way, models of increasing comprehensiveness can be built up from the experience of elucidating the dynamics of more restrictive data sets. The principal objectives of this paper are to discuss issues concerning dynamic modeling in general and to summarize in particular the good results of an initial attempt at constructing the dynamics of the outer electron radiation belt based on a moderately active data period from Lockheed's SC-3 instrument flown on board the SCATHA (P78-2) spacecraft. Further, we shall discuss the issues brought out and lessons learned in this test case.
- OSTI ID:
- 5287891
- Report Number(s):
- CONF-8711149-; CODEN: APCPC; TRN: 90-002261
- Journal Information:
- AIP Conference Proceedings (American Institute of Physics) Conference Proceedings; (USA), Vol. 186:1; Conference: Conference on high energy radiation background in space, Sanibel Island, FL (USA), 2-5 Nov 1987; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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