Results 51 to 60 of about 47,066 (211)

Climatology of Satellite Traces over European Mid-Latitudes and Their Association with Travelling Ionospheric Disturbances

Applied Sciences
Satellite traces (STs) are additional ionogram echoes associated with off-vertical reflections from spatially structured F-region plasma. This study investigates the climatology of STs over the European mid-latitude ionosphere using Digisonde ionograms ...
Ankitha Nandakumar, Haris Haralambous, Ola Abu Elezz, Blessy Varghese, Krishnendu Sekhar Paul, Tiju Joseph Mathew   +5 more
doaj   +1 more source

Persistence of planetary wave type oscillations in the mid-latitude ionosphere

Annals of Geophysics, 2006
Planetary wave type oscillations have been observed in the lower and middle atmosphere but also in the ionosphere, including the ionospheric F2 layer. Here we deal with the oscillations in foF2 analysed for two Japanese and two US stations over a solar ...
P. Krizan, P. Sauli, J. Lastovicka
doaj   +1 more source

Comparative analysis of variability in the mid-latitude stratosphere and ionosphere in winter periods

Solar-Terrestrial Physics, 2022
In this work, we perform a joint analysis of the spatial-temporal dynamics of ionospheric and stratospheric variability (with scales characteristic of internal gravity waves) at different longitudes of midlatitudes of the Northern Hemisphere.
Vesnin A. M.
doaj   +1 more source

Magnetosphere‐ionosphere coupling by Alfvén waves at midlatitudes [PDF]

Journal of Geophysical Research: Space Physics, 2004
Numerical modeling of magnetosphere‐ionosphere coupling by Alfvén waves has proven to be a valuable tool in describing the propagation and evolution of field‐aligned currents and the magnetic fields produced by these waves as observed on the ground.
openaire   +1 more source

Spatial Relationship Between the Midlatitude Ionospheric Trough and Plasmaspheric Plumes

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract The plasmasphere, a subsystem of the complex geospace environment, is a torus of cold plasma “frozen” into Earth's magnetic field and sourced from the ionosphere. Plasmaspheric plumes–drainage channels formed during geospace storms–have primarily been observed near the equator.
Balázs Heilig, Lilla Murár‐Juhász, Máté Tomasik   +2 more
wiley   +1 more source

Alfvén wave boundary condition for responsive magnetosphere-ionosphere coupling [PDF]

, 2014
A.J.B.R. thanks STFC for present support through consolidated grant ST/K000993/1 and gratefully acknowledges a Royal Commission for the Exhibition of 1851 Research Fellowship that also assisted this work.The solution of electric fields and currents in a ...
Wright, A.N., Wright, Andrew N., Andrew N. Wright, Russell, A.J.B., Russell, Alexander J.B., Alexander J. B. Russell, Russell, A.J.B.; id_orcid, Wright, A.N.; id_orcid   +7 more
core   +1 more source

Spectral investigation of traveling ionospheric disturbances: IONOLAB-FFT

Geodesy and Geodynamics, 2017
Ionosphere is an important layer of atmosphere which is under constant forcing from both below due to gravitational, geomagnetic and seismic activities, and above due to solar wind and galactic radiation. Spatio-temporal variability of ionosphere is made
Feza Arikan, Aysenur Yarici
doaj   +1 more source

OI 630 nm Airglow Observed From Space as a Diagnostic of Nighttime Low‐Latitude Ionospheric Dynamics

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract This study investigates the nighttime morphology of the bottomside F region (∼250 km) at low latitudes using 630 nm airglow measurements from the Visible and Infrared Spectral Imager (VISI) aboard the Ionosphere, Mesosphere, Upper Atmosphere, and Plasmasphere (IMAP) mission on the International Space Station. For this purpose, we analyzed IMAP/
Hyosub Kil, Se‐Heon Jeong, Jeong‐Heon Kim, Woo Kyoung Lee, Young‐Sil Kwak, Akinori Saito, Takeshi Sakanoi   +6 more
wiley   +1 more source

Statistical analysis of regional STEC gradient trends for midlatitude ionosphere

Geodesy and Geodynamics
In this study, the gradients of Total Electron Content (TEC) for a midlatitude region are estimated and grouped with respect to the distance between neighboring stations, time periods within a day, and satellite directions.
Meltem Koroglu, Feza Arikan
doaj   +1 more source

Relationships Between foF2 and Various Solar Activity Proxies

Space Weather, 2023
To study ionospheric climate, to model the ionosphere (e.g., the International Reference Ionosphere—IRI) and to investigate its long‐term changes and trends, solar activity proxies/indices have been used, because long and homogeneous data series of solar
Jan Laštovička, Dalia Burešová
doaj   +1 more source