@InProceedings{AveiroDenaAbduSchu:2005:GeStEf,
author = "Aveiro, Henrique Carlotto and Denardin, Clezio Marcos and Abdu,
Mangalathayil Ali and Schuch, Nelson Jorge",
affiliation = "Instituto Nacional de Pesquisas Espaciais, Rio Grande do Sul and
Instituto Nacional de Pesquisas Espaciais, Divis{\~a}o de
Aeronomia(INPE, DAE)",
title = "Geomagnetic Storm Effects on The Signatures of Equatorial
Electrojet Plasma Irregularities",
booktitle = "Proceedings...",
year = "2005",
organization = "El Leoncito School on Solar Physics, 3.",
abstract = "A 50 MHz coherent back-scatter radar, also known by the
anachronism RESCO, has been operated in Brazil since 1998 at
S{\~a}o Lu{\'{\i}}s (2.33° S, 44.2 °W, DIP: -0.5), on the dip
equator to study the equatorial electrojet dynamics. Spectral
analyses of the received echoes from equatorial electrojet (EEJ)
irregularities allow us to identify the dominant type of plasma
instabilities in the electrojet bulk. From the frequency
distribution of the irregularities echoes power spectra; we are
also able to deduce the Doppler shift caus ed by the
irregularities drift in relation to the radar beam. Such drift is
close related to the electric fields that drives the plasma
instabilities. Through the analysis of the spectrograms (each one
corresponding to one range gate) in disturbed periods, it has been
possible to observe effects in the EEJ electric fields associated
with possible prompt penetration (PP) electric fields. The PP
electric fields show themselves as increases or decreases in the
generation of 3-meter plasma irregularities, according to its
polarity in relati on to the EEJ electric fields. This paper shows
the RESCO spectrograms with increases/decreases of 3-meter EEJ
irregularities generation associated with possible PP electric
fields in geomagnetic disturbed days as well as the results of EEJ
in quiet days. The methodology and the results are discussed and
analyzed.",
conference-location = "San Juan",
conference-year = "28 de novembro a 5 de dezembro",
copyholder = "SID/SCD",
language = "en",
ibi = "sid.inpe.br/MTC-m13@80/2005/12.02.18.15",
url = "http://urlib.net/ibi/sid.inpe.br/MTC-m13@80/2005/12.02.18.15",
targetfile = "geomagnetic.pdf",
urlaccessdate = "29 jun. 2024"
}