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Title: Some studies on post-sunset maximum of a long distance LF signal
Authors: De, B K
Sarkar, S K
Issue Date: Jun-1995
Publisher: NISCAIR-CSIR, India
Abstract: Disappearance of electrons in the D region of the ionosphere gives rise to post-sunset maximum (PSM) in the signal amplitude of 40 kHz radio wave propagated over a long distance from Sanwa (Japan) to Calcutta. It has been noticed that there is a time lag between PSM and ionospheric sunset. This time lag has been studied in relation to the position of the overhead sun. It has been found that in most of the geomagnetically active days PSMs are missing due to extra-ionization in the ionospheric D region.
Page(s): 126-130
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.24(3) [June 1995]

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