Electric field measurements of DC and long wavelength structures associated with sporadic-E layers and QP radar echoes [PDF]
Annales Geophysicae, 2005 Electric field and plasma density data gathered on a sounding rocket launched from Uchinoura Space Center, Japan, reveal a complex electrodynamics associated with sporadic-E layers and simultaneous observations of quasi-periodic radar echoes.
R. Pfaff +7 more
doaj +1 more source
Lidar observations of sporadic Na layers over Gadanki (13.5° N, 79.2° E) [PDF]
Annales Geophysicae, 2007 We studied the characteristics of sporadic sodium layers (SSLs) observed with the sodium (Na) resonance scattering lidar at Gadanki (13.5° N, 79.2° E).
P. Vishnu Prasanth +3 more
doaj +1 more source
Enhanced Sporadic E Layer and Its Perturbations During the 2022 Hunga Volcanic Eruption
Space WeatherSporadic E (Es) layers are plasma irregularities significantly affecting radio communication and navigation systems. And, their dominant formation mechanism at mid‐latitudes, known as the wind shear theory, suggests that they serve as indicators of the ...
Lihui Qiu +3 more
doaj +1 more source
Frontiers in Astronomy and Space SciencesThis study utilizes 3 years of observational data from the China-Brazil Joint Laboratory for Space Weather (CBJLSW) dual-beam Na-K LIDAR to investigate fast-type sporadic sodium (Na) and potassium (K) layers.
Vania F. Andrioli +25 more
doaj +1 more source
Permanent changes in sporadic E layers over Fortaleza, Brazil
Advances in Space Research, 1997 Abstract Data available on sporadic E layers in ionograms, from 1975 to 1995 over Fortaleza (38°W, 4°S) in Brazil are analysed as an extension of a previous study to examine permanent changes in the occurrence characteristics of the different types of E s layers.
M.A. Abdu +4 more
openaire +2 more sources
Morphology and dynamics of sporadic E layers observed by amateur radio
Earth and Planetary PhysicsThe Es layer is a thin layer that concentrates metallic ions in the mesosphere and lower thermosphere (MLT) region. When it occurs, it can affect the performance of the Global Navigation Satellite System and high/very high frequency (HF/VHF) radio ...
WenYu Hao +4 more
doaj +1 more source
Effects of mesoscale gravity waves on sporadic E simulated by a one-dimensional dynamic model
Earth and Planetary PhysicsIn addition to being driven by tidal winds, the sporadic E (Es) layers are modulated by gravity waves (GWs), although the effects are not yet comprehensively understood. In this article, we discuss the effects of mesoscale GWs on the Es layers determined
Xu Zhou, ZeZhong Li, XinAn Yue, LiBo Liu
doaj +1 more source
On spread-Es effects in the ionosphere before earthquakes [PDF]
Natural Hazards and Earth System Sciences, 2005 The spread-Es phenomenon which appears as diffusivity of the traces of sporadic E-layers on the ionogrammes of vertical sounding stations and which reflects the turbulization of the sporadic layers -Es is studied in connection with earthquake preparation
V. A. Liperovsky +4 more
doaj
A statistical study on the correlation between sporadic Ca+ layer and Es in Beijing (40.5°N, 116°E)
Earth and Planetary PhysicsFrom April 2020 to June 2022, a Ca+ lidar with dual-wavelength and narrow-band emitting lasers utilizing all-solid-state technology was employed to conduct observations in Beijing (40.41°N, 116.01°E) for a total duration of 1797.79 hours over 280 nights.
YuChang Xun +7 more
doaj +1 more source
Horizontal structure of convergent wind shear associated with sporadic E layers over East Asia
Earth and Planetary Physics, 2023 Lihui Qiu +10 more
semanticscholar +1 more source