Results 101 to 110 of about 2,360 (197)

Investigation for Possible Association of the Topside and Bottomside Ionospheric Irregularities over the Midlatitude Ionosphere

Applied Sciences
The present study investigates the characteristics of ionospheric irregularities at middle latitudes by examining the association between spread F (SF) events detected by Digisondes and medium-scale travelling ionospheric disturbances (MSTIDs) detected ...
Krishnendu Sekhar Paul, Haris Haralambous   +1 more
doaj   +1 more source

Behaviour of the F1-region, and Esand spread-F phenomena at European middle latitudes, particularly under geomagnetic storm conditions

Annals of Geophysics, 2004
Knowledge of the ionospheric electron density distribution and its fluctuations is essential for predicting ionospheric characteristics for radio wave propagation and for other applications such as satellite tracking, navigation, etc.
F. Märcz, J. Lastovicka, D. Buresová, P. Bencze   +3 more
doaj   +1 more source

Wave propagation and earth satellite radio emission studies [PDF]

Radio propagation studies of the ionosphere using satellite radio beacons are described. The ionosphere is known as a dispersive, inhomogeneous, irregular and sometimes even nonlinear medium. After traversing through the ionosphere the radio signal bears
Flaherty, B. J., Liu, C. H., Yeh, K. C.
core   +1 more source

Study on co-seismic ionospheric disturbance of Alaska earthquake on July 29, 2021 based on GPS TEC. [PDF]

Sci Rep, 2023
Ruan Q, Yuan X, Liu H, Ge S.
europepmc   +1 more source

Tracking tsunami propagation and Island's collapse after the Hunga Tonga Hunga Ha'apai 2022 volcanic eruption from multi-space observations. [PDF]

Sci Rep, 2023
Shrivastava MN, Sunil AS, Maurya AK, Aguilera F, Orrego S, Sunil PS, Cienfuegos R, Moreno M.   +7 more
europepmc   +1 more source

Spatial frequencies associated with the latitudinal structures of ionospheric currents seen by CHAMP satellite

, 2015
The CHAMP magnetic field variations during international quiet days of low solar activity period 2008-2009 are investigated. The present paper reports the existence of frequency-peaks < 20 mHz in the compressional component of the magnetic field in ...
Sinha, A. K., Thomas, Neethal, Vichare, Geeta   +2 more
core   +1 more source

Investigation of the Ionospheric Response on Mother’s Day 2024 Geomagnetic Superstorm over the European Sector

Atmosphere
The present study examines the negative ionospheric response over Europe during two geomagnetic storms on 10–13 May 2024, known as the Mother’s Day geomagnetic superstorm.
Krishnendu Sekhar Paul, Haris Haralambous, Mefe Moses, Christina Oikonomou, Stelios M. Potirakis, Nicolas Bergeot, Jean-Marie Chevalier   +6 more
doaj   +1 more source

Resonant signals in the lithosphere-atmosphere-ionosphere coupling. [PDF]

Sci Rep, 2022
Chen CH, Sun YY, Zhang X, Gao Y, Wang F, Lin K, Tang CC, Huang R, Xu R, Liu J, Wang Y, Chen C.   +11 more
europepmc   +1 more source

Numerical simulation of stratospheric QBO impact on the planetary waves up to the thermosphere. [PDF]

Sci Rep, 2022
Koval AV, Gavrilov NM, Kandieva KK, Ermakova TS, Didenko KA.   +4 more
europepmc   +1 more source

Observations of vertical winds and the origin of thermospheric gravity waves launched by auroral substorms and westward travelling surges [PDF]

Several sequences of observations of strong vertical winds in the upper thermosphere are discussed, in conjunction with models of the generation of such winds. In the auroral oval, the strongest upward winds are observed in or close to regions of intense
Rees, D.
core   +1 more source