A correlation study of solar activity index and amplitude of VLF trans-equatorial propagation |
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| Authors: | P Pal A Bhowmik R Roy R Ali A Choudhury A Guha and B K De |
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| Institution: | (1) Physics Department, University of Botswana, P/Bag 0022, Gaborone, Botswana;(2) Marine Geophysical Laboratory, James Cook University, Townsville, QLD, 4811, Australia |
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| Abstract: | Diurnal and seasonal behavior of amplitude of NWC 22.3 kHz signal transmitted from Australia (22049/S, 114023/E), and received at Kolkata (22034/N, 88024/E), India have been investigated The signal amplitude is remarkably low in October. The variations of daily maximum and
daily minimum of signal amplitude have been analyzed. The signal on the present propagation path showed non-correlation with
A
p
index, but showed a moderate but negative correlation with 10.7 cm solar flux. |
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