Bulg. J. Phys. vol.35 no.2 (2008), pp. 151-160



Solar Flare Effects on Propagation of Sferics and Transmitted Signal

S.S. De1, B.K. De2, M. Pal2, B. Bandyopadhyay1, A. Guha1, S. Paul1, D.K. Haldar1, S. Barui1, R. Roy2
1Centre of Advanced Study in Radio Physics and Electronics, University of Calcutta, Kolkata 700 009, India
2Department of Physics, Tripura University, Tripura 799 130, India
Abstract. The solar flare effects on the characteristic features of Integrated Field Intensity of Sferics (IFIS) have been presented in this paper. Recordings of atmospherics at frequencies 1, 3, 6, 9 and 12 kHz from Agartala (Lat. 23o N) showed sudden enhancement in the IFIS throughout the time of solar flares occurred during July, 2004. The influence of solar flares on the transmitted signals (VTX1) at 16.3 kHz from one navy station in India, recorded in Kolkata, on November 23, 2004 has also been reported here.

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