@Article{NyassorBuPaMeTaWrGo:2018:DeGrWa,
author = "Nyassor, Prosper K. and Buriti, Ricardo Arlen and Paulino, Igo and
Medeiros, Amauri F. and Takahashi, Hisao and Wrasse, Cristiano Max
and Gobbi, Delano",
affiliation = "{Universidade Federal de Campina Grande (UFCG)} and {Universidade
Federal de Campina Grande (UFCG)} and {Universidade Federal de
Campina Grande (UFCG)} and {Universidade Federal de Campina Grande
(UFCG)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
title = "Determination of gravity wave parameters in the airglow combining
photometer and imager data",
journal = "Annales Geophysicae",
year = "2018",
volume = "36",
number = "3",
pages = "705--715",
month = "May",
keywords = "Atmospheric composition and structure, air-glow and aurora,
electromagnetics, wave propagation, history of geophysics,
atmospheric sciences.",
abstract = "Mesospheric airglow measurements of two or three layers were used
to characterize both vertical and horizontal parameters of gravity
waves. The data set was acquired coincidentally from a
multi-channel filter (Multi-3) photometer and an all-sky imager
located at Sao Joao do Cariri (7.4 degrees S, 36.5 degrees W) in
the equatorial region from 2001 to 2007. Using a least-square
fitting and wavelet analysis technique, the phase and amplitude of
each observed wave were determined, as well as the amplitude
growth. Using the dispersion relation of gravity waves, the
vertical and horizontal wavelengths were estimated and compared to
the horizontal wavelength obtained from the keogram analysis of
the images observed by an all-sky imager. The results show that
both horizontal and vertical wavelengths, obtained from the
dispersion relation and keogram analysis, agree very well for the
waves observed on the nights of 14 October and 18 December 2006.
The determined parameters showed that the observed wave on the
night of 18 December 2006 had a period of similar to 43.8 +/- 2.19
min, with the horizontal wavelength of 235.66 +/- 11.78 km having
a downward phase propagation, whereas that of 14 October 2006
propagated with a period of similar to 36.00 +/- 1.80 min with a
horizontal wavelength of similar to 195 +/- 9.80 km, and with an
upward phase propagation. The observation of a wave taken by a
photometer and an allsky imager allowed us to conclude that the
same wave could be observed by both instruments, permitting the
investigation of the two-dimensional wave parameter.",
doi = "10.5194/angeo-36-705-2018",
url = "http://dx.doi.org/10.5194/angeo-36-705-2018",
issn = "0992-7689",
language = "en",
targetfile = "nyassor_determination.pdf",
urlaccessdate = "27 abr. 2024"
}