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Title: Studies of plasma irregularities and convection in the polar ionosphere using HILAT, SABRE and EISCAT. Interim report, 1 Feb 88-31 Mar 89

Abstract

A statistical study of the F-region main ionospheric trough has been undertaken with EISCAT common programme data to assess the possibility that the trough region is a perferential region for the generation of E-region irregularities. Three years of CP-3 data from EISCAT formed the basis of this study. Backscatter observed by the coherent radar, SABRE, was also utilized to study the occurrence of irregularities in the E-region. On 26 out of the 36 days when the trough was observed by EISCAT, SABRE observed coherent backscatter. Although this percentage seems high, there was no consistent relationship between the latitude of the trough minimum and the latitude of peak backscatter intensity. A case study involving a four day run of EISCAT in September 1986 indicates that the trough latitude can be affected by changes in the interplanetary magnetic field north-south components. On two days rapid decreases in the latitude of the trough were related to a southward turning of the IMF and the onset of backscatter. The high percentage of occurrence of backscatter is believed to be caused by enhanced convection.

Authors:
; ;
Publication Date:
Research Org.:
Leicester Univ. (United Kingdom). Dept. of Physics
OSTI Identifier:
5468221
Alternate Identifier(s):
OSTI ID: 5468221
Report Number(s):
AD-A-233593/3/XAB
CNN: AFOSR-87-0322
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; E REGION; ELECTRON DENSITY; F REGION; BACKSCATTERING; CONVECTION; DISTURBANCES; INTERPLANETARY MAGNETIC FIELDS; IONOSPHERE; LATITUDE EFFECT; POLAR REGIONS; RADAR; SATELLITES; STATISTICS; EARTH ATMOSPHERE; ENERGY TRANSFER; GEOGRAPHICAL VARIATIONS; HEAT TRANSFER; MAGNETIC FIELDS; MASS TRANSFER; MATHEMATICS; MEASURING INSTRUMENTS; PLANETARY IONOSPHERES; RANGE FINDERS; SCATTERING; VARIATIONS 640201* -- Atmospheric Physics-- Auroral, Ionospheric, & Magetospheric Phenomena

Citation Formats

Jones, T.B., Lester, M., and Wilkinson, A.J. Studies of plasma irregularities and convection in the polar ionosphere using HILAT, SABRE and EISCAT. Interim report, 1 Feb 88-31 Mar 89. United States: N. p., 1989. Web.
Jones, T.B., Lester, M., & Wilkinson, A.J. Studies of plasma irregularities and convection in the polar ionosphere using HILAT, SABRE and EISCAT. Interim report, 1 Feb 88-31 Mar 89. United States.
Jones, T.B., Lester, M., and Wilkinson, A.J. Mon . "Studies of plasma irregularities and convection in the polar ionosphere using HILAT, SABRE and EISCAT. Interim report, 1 Feb 88-31 Mar 89". United States.
@article{osti_5468221,
title = {Studies of plasma irregularities and convection in the polar ionosphere using HILAT, SABRE and EISCAT. Interim report, 1 Feb 88-31 Mar 89},
author = {Jones, T.B. and Lester, M. and Wilkinson, A.J.},
abstractNote = {A statistical study of the F-region main ionospheric trough has been undertaken with EISCAT common programme data to assess the possibility that the trough region is a perferential region for the generation of E-region irregularities. Three years of CP-3 data from EISCAT formed the basis of this study. Backscatter observed by the coherent radar, SABRE, was also utilized to study the occurrence of irregularities in the E-region. On 26 out of the 36 days when the trough was observed by EISCAT, SABRE observed coherent backscatter. Although this percentage seems high, there was no consistent relationship between the latitude of the trough minimum and the latitude of peak backscatter intensity. A case study involving a four day run of EISCAT in September 1986 indicates that the trough latitude can be affected by changes in the interplanetary magnetic field north-south components. On two days rapid decreases in the latitude of the trough were related to a southward turning of the IMF and the onset of backscatter. The high percentage of occurrence of backscatter is believed to be caused by enhanced convection.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {8}
}

Technical Report:
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