CHARACTERISTICS OF VHF RADIOWAVE SCINTILLATIONS OVER A SOLAR-CYCLE (1983-1993) AT A LOW-LATITUDE STATION - WALTAIR (17.7-DEGREES-N, 83.3-DEGREES-E)

Authors
RAO PVSR JAYACHANDRAN PT RAM PS RAO BVR PRASAD DSVVD BOSE KK
Citation
Pvsr. Rao et al., CHARACTERISTICS OF VHF RADIOWAVE SCINTILLATIONS OVER A SOLAR-CYCLE (1983-1993) AT A LOW-LATITUDE STATION - WALTAIR (17.7-DEGREES-N, 83.3-DEGREES-E), Annales geophysicae, 15(6), 1997, pp. 729-733
Citations number
31
Categorie Soggetti
Astronomy & Astrophysics","Geosciences, Interdisciplinary","Metereology & Atmospheric Sciences
Journal title
Annales geophysicae → ACNP
ISSN journal
09927689
Volume
15
Issue
6
Year of publication
1997
Pages
729 - 733
Database
ISI
SICI code
0992-7689(1997)15:6<729:COVRSO>2.0.ZU;2-H
Abstract
The characteristics of VHF radiowave scintillations at 244 MHz (FLEETS AT) during a complete solar cycle (1983-93) at a low-latitude station, Waltair (17.7 degrees N, 83.3 degrees E), are presented. The occurren ce of night-time scintillations shows equinoctial maxima and summer mi nima in all the epochs of solar activity, and follows the solar activi ty. The daytime scintillation occurrence is negatively correlated with the solar activity and shows maximum occurrence during the summer mon ths in a period of low solar activity. The occurrence of night-time sc intillations is inhibited during disturbed days of high solar activity and enhanced during low solar activity.