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Title: Some Features of Mid-Latitude Trough from Alouette-II Data
Authors: Lakshmi, D. R.
Reddy, B. M.
Issue Date: Jun-1974
Publisher: NISCAIR-CSIR, India
Abstract: The Alouette-II satellite (apogee, 3000 km) data have been used with advantage to study the altitude structure of the mid-latitude trough in the topside ionosphere. The Electron temperature measurements from Explonr·22 satellite in the same period are also used to indicate the nature of the mean ion mass variation in the trough region. The trough in the O+ - dominant region is explained to be due to the efflux of O+ ions upwards to replenish the H+ ions by charge exchange. The negative gradient in the scale height profiles in the trough region clearly indicates lack of static diffusive equilibrium. The correlation between the 'trough' and 'knee' locations is poor for quiet conditions, but improves with increasing magnetic activity.
Page(s): 162-166
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.03(2) [June 1974]

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