Monitoring of a shock wave propagation from the solar atmosphere to Earth

In the special case of the event on April 7, 1997 a shock wave was travelling from the Sun to Earth. This shock wave was accompanied by a solar and interplanetary type II radio burst remotely measured by the radiospectrometers of the Astrophysical Institute Potsdam and on the WIND spacecraft. The shock wave caused a sudden commencement at Earth and enhancements of the total electron content of the ionosphere on April 10, 1997. Moreover an aurora was observed by the Polar satellite on April 11, 1997. A heliospheric density model derived from a special solution of Parker's wind equation is a good tool to describe the propagation of this shock wave from the low corona up to several AU. The presented method gives the possibility for forecasting solar induced magnetic activities at Earth. (orig.)8 refs.Available from TIB Hannover: RR 7310(99-12) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman