TY - JOUR
T1 - Small scale irregularities associated with a high latitude electron density gradient
T2 - scintillation and EISCAT observations
AU - Kersley, L.
AU - Pryse, S. E.
AU - Wheadon, N. S.
N1 - Funding Information:
Acknowledgements-This work has been supported by the U.K. Radio Propagation Programme of the Science and Engineering Research Council. The assistance of staff from the Rutherford Appleton Laboratory in several aspects of the work is gratefully acknowledged. Financial support has also been received from the U.S. Air Force under grant no. AFOSR 854190. The cooperation of the Director and staff of the Kiruna Geophysical Institute is also gratefully acknowledged.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1988/6
Y1 - 1988/6
N2 - A coordinated experiment involving scintillation observations using NNSS satellites and special program measurements with the EISCAT ionospheric radar facility is described. The results reveal the presence of sub-kilometre scale irregularities in the vicinity of a long lived steep equatorwards gradient in electron density. Evidence is presented of a southwards plasma flow which would cause the gradient to be unstable to the E Λ B gradient-drift mechanism. An instability growth time of about 4 min has been estimated from the observations. Cooler electron temperatures associated with enhanced densities rules out soft particle precipitation as an irregularity source in this case.
AB - A coordinated experiment involving scintillation observations using NNSS satellites and special program measurements with the EISCAT ionospheric radar facility is described. The results reveal the presence of sub-kilometre scale irregularities in the vicinity of a long lived steep equatorwards gradient in electron density. Evidence is presented of a southwards plasma flow which would cause the gradient to be unstable to the E Λ B gradient-drift mechanism. An instability growth time of about 4 min has been estimated from the observations. Cooler electron temperatures associated with enhanced densities rules out soft particle precipitation as an irregularity source in this case.
UR - https://www.scopus.com/pages/publications/38249028418
U2 - 10.1016/0021-9169(88)90114-6
DO - 10.1016/0021-9169(88)90114-6
M3 - Article
AN - SCOPUS:38249028418
SN - 0021-9169
VL - 50
SP - 557
EP - 563
JO - Journal of Atmospheric and Terrestrial Physics
JF - Journal of Atmospheric and Terrestrial Physics
IS - 6
ER -