@Article{SatoKiOtWrPaSo:2021:LBSyAp,
author = "Sato, Horoatsu and Kim, Jun Su and Otsuka, Yuichi and Wrasse,
Cristiano Max and Paula, Eurico Rodrigues de and Souza, Jonas
Rodrigues de",
affiliation = "{German Aerospace Center (DLR)} and {German Aerospace Center
(DLR)} and {Nagoya University} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais
(INPE)}",
title = "L-Band Synthetic Aperture Radar Observation of Ionospheric Density
Irregularities at Equatorial Plasma Depletion Region",
journal = "Geophysical Research Letters",
year = "2021",
volume = "48",
number = "16",
pages = "e2021GL093541",
month = "Aug.",
keywords = "all sky imager, equatorial plasma bubble, ionosphere, plasma
irregularities, Synthetic Aperture Radar.",
abstract = "Plasma density irregularities in the equatorial ionosphere are
thought to cause the distortions of L-band Synthetic Aperture
Radar (SAR) images, which have been observed in recent years, but
the origin of the image distortion has not yet been clearly
identified experimentally. We report on the first simultaneous
observation of equatorial plasma bubbles (EPBs) by the
ALOS-2/PALSAR-2 satellite and ground 630-nm airglow imager in
northern Brazil. We observe stripe-like distortions of SAR signal
power that are aligned in the direction of local magnetic field
lines. The stripe-like patterns are observed in the vicinity of
airglow depletion. The result shows that the observed L-band SAR
stripes are caused by ionospheric scintillation due to plasma
irregularities with the scale size of hundreds of meters
associated with EPBs. We show that the SAR scintillation stripes
are predominantly found at the location of sharp density gradients
in the two-dimensional form.",
doi = "10.1029/2021GL093541",
url = "http://dx.doi.org/10.1029/2021GL093541",
issn = "0094-8276",
language = "en",
targetfile = "sato_lband.pdf",
urlaccessdate = "04 maio 2024"
}