VIII. RECOMMENDATIONS Even though the foregoing report deals only with the results of an initial assessment of magnetospheric effects of the SPS, a number of general and specific impressions have been gained in the course of studying the physical implications of the principal issues treated in the previous Section. These impressions may be germane to the development of a final assessment program. Indeed, some specific impressions may be critical elements in determining the direction of future efforts in the project, not necessarily with the specificity of an environmental impact statement but with a view towards establishing a physically sound basis to define the approximate limits of magnetospheric modification. These impressions are set forth below: 1. In order to deal with the physics of magnetospheric modification, it is of critical importance to know unequivocally the quantity and characteristics of exhaust emissions in space and time. We have not been able to find such a collection of SPS parameters defined primarily for environmental assessment. Emission parameters for COTV and POTV engines used in this report are gleaned from brief entries in the concept definition report (U.S. DOE, 1979) and the SPS Baseline Review (U.S. NASA, 1978) which deal primarily with engineering development. The POTV emission scenario in particular has to be constructed by Dr. C. Park of NASA/Ames. Since some principal magnetospheric effects such as radiation belt dosage enhancement may impact upon the engineering design of SPS itself, it would be advantageous to have a definitive compilation of SPS emission and other parameters of concern to environmental assessment. 79
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