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Title: Vlf Phase & Amplitude Measurements during Solar Eclipse
Authors: Jain, S L
Subrahmanyam, C V
Issue Date: Oct-1979
Publisher: NISCAIR-CSIR, India
Abstract: The measurements made by means of vlf phase and amplitude recordings made on 22'3 kHz (NWC, Australia) during the solar eclipse of 23 Oct. 1976 have been discussed. The phase and hence the reflection height were observed to increase gradually well after the first contact. The total change in the reflection height at the totality was found to be of the order 5 km. The recovery of the phase was somewhat gradual as compared to the onset. The variations in amplitude during the eclipse were not appreciable. The changes occurring in the phase of vlf signal during this event have been interpreted in terms of ozone and atomic oxygen concentration in the D-region of the ionosphere. The implications of the study in respect to the change in the ratio λ = are explained.
Page(s): 348-350
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.08(5&6) [October & December 1979]

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