km altitude because magnetospheric irregularities are not strong enough to produce significant effects. Booker (1975), however, pointed out that signal interference effects require spatial integration over the extent of the scat- terers and that even weak irregularities may produce signal interference if they are extensive enough. Recently, the CAMEO barium plasma release experiment at ~ 500 km altitude (Smith et al., 1979) showed density striations extending to 10,000 km altitude. Obviously, this area is still under active scientific investigation. We cannot yet determine with some degree of certainty the severity of potential communication signal interference effects of SPS plasma injections, although the dynamical role of plasma instabilities in magnetospheric modifications is surely to be very significant. 62
RkJQdWJsaXNoZXIy MTU5NjU0Mg==