Multifrequency Vertical Incidence (A-1 Method) Absorption Measurements at Ahmedabad during Total Solar Eclipse October 1995

Abstract

A vertical incidence multifrequency absorption experiment was conducted on 2.2, 2.5 and 2.8 MHz at Ahmedabad during TSE Oct. 24, 1995. From start of Eclipse a wave like structure starts and grows to maximum amplitude sometime after the maximum of Eclipse on all the frequencies. Later it decays and dies towards end of Eclipse only on lower two frequencies. On lowest frequency the reflection height was in E-layer as on control days while the absorption was slightly higher. On the two higher frequencies the reflection height was in F-region on Eclipse day while it is in the E-region on control days. The absorption was also much reduced and the heights of reflection within the F-region also increased upto maximum of Eclipse.