@InProceedings{AbduBrBaGuBaBaSo:2012:PlWaMo,
author = "Abdu, Mangalathayil Abdu and Brum, Christiano Garnett Marques and
Batista, Paulo Prado and Gurubaran, Subramanian and Bageston, Jose
Valentin and Batista, Inez Staciarini and Sobral, Jos{\'e}",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and Arecibo
Observatory, 00612, Puerto Rico and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and Indian Institute of Geomagnetism,
Tirunelveli, India and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "Planetary/Kelvin wave modulation of the equatorial ionospheric
evening vertical plasma drift and the post sunset spread F
developments",
booktitle = "Abstracts...",
year = "2012",
organization = "Scientific Assembly of the Committee on Space Research, 39.
(COSPAR).",
keywords = "equatorial ionospheric zonal electric field, magnetosphere,
propagating planetary waves.",
abstract = "Recent studies have shown that the evening prereversal enhancement
in the equatorial ionospheric zonal electric field /vertical
plasma drift (PRE) and hence post sunset spread F irregularity
(ESF) generation are significantly modified by Planetary waves of
a few-day (2-, 5-, 7-day) periodicity, although many specific
details of which remain to be investigated. Thus the widely
observed day to day/short terms variability in the PRE and ESF
developments originate not only from the variable forcing (in the
form of disturbance electric fields) from magnetosphere, as is
well known, but a large part of it arises also from forcing by
upward propagating wave from lower atmosphere. In this paper we
have analyzed the PRE vertical drifts measured by an equatorial
Digisonde (Fortaleza), and the mesospheric zonal and meridional
winds as measured by two meteor radars operated at an equatorial
site (Sao Joao de Cariri) and a low latitude sites (Cachoeira
Paulista), in Brazil, together with mesospheric winds as measured
by MF radar at an equatorial site (Tirunelveli) in India. The
comparison of these results show the presence of oscillations of
around 3 and 5-7 days of periodicities in the evening vertical
drift as well as in the mesospheric wind field simultaneously in
the Brazilian and Indian longitudes, which are shown to be
produced by eastward propagating Equatorial Kelvin wave as well as
by westward propagating planetary waves. The effects of these
waves on the development of the ESF/plasma bubble irregularities
are also studied.",
conference-location = "Mysore",
conference-year = "14-22 July 2012",
urlaccessdate = "28 abr. 2024"
}