Electromagnetic Pulse in the Magnetosphere Generated by Impulsive Current near the Lower Boundary of the Ionosphere

摘要: A solution to the problem of current spreading is constructed in case relaxation electric charges, which have arisen mesosphere for one reason or other. These currents penetrate into conductive region with anisotropic conductivity D- and E-layers ionosphere, being transformed a MHD-wave that propagates magnetosphere. Based on this solution, form spectrum generated MHD signal are calculated Alfvenic magnetosonic modes coming out ionosphere Electric charges can arise, example, space between thunderstorm cloud shock wave from ground explosion ionosphere. Some parameters accepted model close those expected high-altitude discharges Red Sprite type. The conditions determined under Alfven impulse an amplitude up 100 nT magnetosphere above discharge Such was recorded by AUREOL-3 satellite after MASSA-1. Recently, hypothesized originate as result discharge. hypothesis similar pulse allows explain semiquantitative way short burst electron field-aligned acceleration observed DE-2 over Debbie hurricane. atmospheric type be powerful, though short-time local, source electrons kiloelectronvolt energies at low middle latitudes. One could expect such effect causes modified character so-called Trimpi-effect (a short-term disturbance propagation VLF waves ionosphere), thus, it observable.