Note on low-level geomagnetic ring-current effects

摘要: Various measurements of the intensity radiation within inner Van Allen belt have indicated little possibility that equatorial magnetic field should exceed 0.5 γ. The 12-year means geomagnetic disturbance data show an latitude variation, which could arise from a transient ring current at height outer reaches belt. This small may be introduced to- suitable heights by downward expansion higher present during storms. would susceptible experimental check. Another is increased westward flow ionosphere or enhanced compression magnetosphere storm days.