6. Consider the use of depletion experiments at auroral latitudes. 7. Utilize data from observations made using existing satellites (SCATHA, GEOS, PSEE). 8. Coordinate or combine modeling codes and establish uniform and consistent boundary conditions. 9. Use existing data to investigate mechanisms for dumping and replenishing trapped radiation (charged particles trapped in the magnetosphere). In addition to the effluent effects mentioned above, the workshop also raised some issues regarding the satellites in GEO and possible impacts on the satellite environment and on the terrestrial environment. Issues that may require further investigation include the following: 1. Wake effects associated with the movement of the satellites through the ambient plasma and magnetic field. 2. Result of accidents involving formation of large amounts of debris or massive injections of propellants. 3. Bombardment of satellite structure by cosmic rays and meteoroids leading to formation of debris and possibly stable dust clouds. 4. Local magnetic and electric field distributions in vicinity of satellites that may trigger auroras, alter particle trajectories, short out magnetospheric electric fields, etc. 5. Hazards associated with debris accumulated during lifetime of 60 satellites in GEO. 6. Effect of visible and infrared radiation from 60 satellites on astronomical observations. 7. Potential for generation of relatively high energy electrons near satellite vicinity and hazards for personnel and equipment. Present evidence suggests that the satellite-related effects are of either low or uncertain importance.
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