The effect of solar features on geospheric conditions leading to ninety nine geomagnetic storms (OMSs) with H~400 nT and Ap;::;:20 have been investigated using interplanetary magnetic field (IMF) , solar wind plasma (SWP) ...

During a campaign in December 2006, radio spectrum measure- ments over the frequency range 45-870 MHz were carried out at the Gauribida- nur observatory, located about 100 km north of Bangalore. The spectrometer used for ...