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Title: Study of Large & Medium Scale Irregularities Using 140 MHz ATS-6 Faraday Rotation Records from Three Stations
Authors: Singh, Lakha
Vijayakumar, P N
Garg, S C
Tyagi, T R
Bhardwai, R K
Dabas, R S
Nagpal, O P
Gupta, A Sen
Issue Date: Sep-1977
Publisher: NISCAIR-CSIR, India
Abstract: The drift velocities of medium and large scale irregularities have been estimated utilizing the 140 MHz ATS-6 Faraday rotation records obtained simultaneously at Delhi, Kurukshetra and Pilani. The triangulation method of determining the velocities in a general case has been described. The drift velocities of these irregularities have been found to vary from 30 to about 500 m/sec, the commonest speed being about 140 m/sec during the day and about 110 m/sec during the night. These velocities are found to be spread in all possible directions except that during daytime no irregularity was found to be moving in south-east direction while during nighttime only one irregularity was found to be moving in north-east direction. Both periodic and non-periodic TIDs have been observed but most of the disturbances belong to medium scale rather than to large scale TIDs.
Page(s): 245-249
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.06(3) [September 1977]

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