@Article{SobralAbduBatiZaml:1981:WaDiLo,
author = "Sobral, Jose Humberto Andrade and Abdu, Mangalathayil Ali and
Batista, Inez Staciarini and Zamlutti, Carlos Jose",
title = "Wave disturbances in the low latitude ionosphere and equatorial
ionospheric plasma depletions",
journal = "Journal of Geophysical Research",
year = "1981",
volume = "86",
number = "A3",
pages = "1374--1378",
month = "Mar.",
keywords = "AERONOMIA, baixa ionosfera, ondas, perturba{\c{c}}{\~o}es
ionosf{\'e}ricas, densidade do plasma, lower ionosphere, waves,
ionospheric disturbances, ionospheric propagation, plasma
density.",
abstract = "An isolated nighttime ionospheric wave disturbance was observed
simultaneously by a meridional scanning 6300- A photometer, a
6300- A zenith photometer, a 30-MHz riometer, and an ionosonde
over Cachoeira Paulista, a low-latitude station in Brazil. From
the results we have identified at least two different scale sizes
for the disturbances which could be broadly classified as(l)a
larger scale component easily identified in the riometer data and
has characteristics similar to those of a large scale TID
and(2)smaller scale disturbances observable in the scanning
photometer data, occurring during the ascending phases of the
larger scale waves. A Fourier analysis of the zenith airglow
variations clearly reveals a dominant period of about 104 min that
seems to correspond to the period of the larger scale waves and no
single dominant period is present for the smaller scale waves.
Whereas all these have a poleward velocity component, the smaller
scale waves show up this feature more markedly. The equatorial
source of the smaller scale disturbances and other characteristics
have led us to suggest that these disturbances are perhaps the
low-latitude manifestations of the upward propagating field
aligned plasma bubbles in the equatorial ionosphere.",
issn = "0148-0227 and 2156-2202",
label = "2054",
targetfile = "INPE-1806.pdf",
urlaccessdate = "01 maio 2024"
}