Observation of the MF Broadcasting Wave Intensities on the Solar Eclipse

Abstract

The ionospheric D region generated by sunlight has great influence on the MF wave propagation. To investigate the response on the D region during the solar eclipse, we observed the MF broadcast wave intensities for two similar periods, the annular and the partial solar eclipse in Japan. As a result, more MF broadcasts were observed during the partial solar eclipse although the partial solar eclipse had more sunlight than the annular solar eclipse.