Results 31 to 40 of about 47,066 (211)

Disturbance in the Daytime Midlatitude Upper F Region Associated with a Medium Scale Electrodynamic Vortex Motion of Plasma [PDF]

Journal of Astronomy and Space Sciences, 2016
Under the assumption of the presence of a medium-scale E × B drift vortex of plasma in the daytime midlatitude F region, and using a simplified ionospheric model, we demonstrate that the E × B drift produces noticeable perturbations in the horizontal ...
Valery V. Hegai, Vitaly P. Kim
doaj   +1 more source

The dayside high-latitude trough under quiet geomagnetic conditions: Radio tomography and the CTIP model [PDF]

, 2005
International audienceThe dayside high-latitude trough is a persistent feature of the post-noon wintertime auroral ionosphere. Radio tomography observations have been used to map its location and latitudinal structure under quiet geomagnetic conditions ...
Dewis, K. L., Denton, M.H., Pryse, S. E., Balthazor, R. L., Middleton, H. R., Balthazor, R.L., H. R. Middleton, Dewis, K.L., R. L. Balthazor, Denton, M. H., S. E. Pryse, Pryse, S.E., Middleton, H.R., K. L. Dewis, M. H. Denton   +14 more
core   +2 more sources

Statistical Study of the Ionospheric Slab Thickness at Beijing Midlatitude Station

Remote Sensing, 2023
The ratio of the total electron content (TEC) to the F2-layer peak electron density (NmF2) is known as the ionospheric equivalent slab thickness (EST, also known as τ), and it is a crucial indicator of the ionosphere. Using TEC and NmF2 data from the years 2010 to 2017, this work conducts a comprehensive statistical analysis of the ionospheric slab ...
Yuqiang Zhang, Yong Zhou 0009, Fubin Zhang, Jian Feng 0012, Tong Xu 0009, Zhongxin Deng, Jiawei Zhu, Yi Liu 0064, Xiang Wang, Zhengyu Zhao 0002, Chen Zhou 0001   +10 more
openaire   +2 more sources

Statistical Analysis and Interpretation of High-, Mid- and Low-Latitude Responses in Regional Electron Content to Geomagnetic Storms

Atmosphere, 2020
Geomagnetic storm is one of the most powerful factors affecting the state of the Earth’s ionosphere. Revealing the significance of formation mechanisms for ionospheric storms is still an unresolved problem.
Konstantin G. Ratovsky, Maxim V. Klimenko, Yury V. Yasyukevich, Vladimir V. Klimenko, Artem M. Vesnin   +4 more
doaj   +1 more source

An extended TRANSCAR model including ionospheric convection: Simulation of EISCAT observations using input from AMIE [PDF]

, 2005
International audienceThe TRANSCAR ionospheric model was extended to account for the convection of the magnetic field lines in the auroral and polar ionosphere.
Lathuillere, C., Fontanari, J., J. Fontanari, C. Lathuillère, B. Emery, Alcaydé, D., Blelly, P.-L., Emery, B., P.-L. Blelly, D. Alcaydé, J. Lilensten, Lilensten, J.   +11 more
core   +2 more sources

Some investigations of ionospheric diurnal variation

地球与行星物理论评, 2021
The most significant and fundamental feature of the ionospheric variations is the diurnal pattern of the ionosphere, which has very interesting and complicated phenomenon.
Libo Liu, Yiding Chen, Ruilong Zhang, Huijun Le, Hui Zhang   +4 more
doaj   +1 more source

Nighttime Enhancements in the Midlatitude Ionosphere and Their Relation to the Plasmasphere [PDF]

Journal of Geophysical Research: Space Physics, 2018
AbstractIn situ electron density measurements by the CHAllenging Minisatellite Payload and the Defense Meteorological Satellites Program F17 satellites show that the midlatitude ionization at altitudes of ∼350 and 850 km is enhanced in the late evening.
Quanhan Li, Yongqiang Hao, Donghe Zhang, Zuo Xiao   +3 more
openaire   +1 more source

Midlatitude ionospheric disturbances during magnetic storms and substorms [PDF]

Journal of Geophysical Research: Space Physics, 2003
We present periodic (∼2 hour) magnetospheric and ionospheric oscillations observed with multiple space‐based and ground‐based instruments during the severe magnetic storm of 25 September 1998. Periodic particle injections were observed at geosynchronous orbit.
Chao‐Song Huang, J. C. Foster, L. P. Goncharenko, G. J. Sofko, J. E. Borovsky, F. J. Rich   +5 more
openaire   +1 more source

Space weather impacts on the ionosphere over the southern African mid-latitude region

Earth, Planets and Space, 2023
The ionosphere suffers major perturbations during severe space weather events such as Coronal Mass Ejections (CMEs), solar flares, high-speed streams, and Corotating Interaction Regions (CIRs).
Tshimangadzo Merline Matamba, Donald W. Danskin, Rendani R. Nndanganeni, Mpho Tshisaphungo   +3 more
doaj   +1 more source

Quantifying Nighttime Gravity Wave‐Driven Mesosphere‐Ionosphere Coupling Over CONUS Using NASA AWE Radiance and GNSS TEC Observations

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract We present the first coordinated study of nighttime mesosphere‐ionosphere coupling over the continental United States (CONUS) from January through November 2024 using NASA Atmospheric Waves Experiment (AWE) airglow measurements near 87 km and GNSS Total Electron Content observations near 300 km.
Sreelekshmi Radhakrishnan Girijakumary, Xian Lu   +1 more
wiley   +1 more source