Results 51 to 60 of about 16,295 (228)
Space Weather, 2023 The plasma density distribution in the equatorial and low latitude ionosphere can often be severely disturbed during active space weather events that can have paramount impacts on the long‐distance high frequency (HF) radio wave (Skywave) communications ...
M. Ankita +3 more
doaj +1 more source
Equatorial Thermosphere-Ionosphere-Plasmasphere Disturbances.
Journal of geomagnetism and geoelectricity, 1996 A theory of equatorial thermosphere-ionosphere-plasmasphere (magnetosphere) disturbances creating field aligned irregularities is extended here. Further development is given of the hypothesis of the transfer of electrostatic fields and currents from the E-region dynamo to the conjugate F-region, topside ionosphere, and plasmasphere, involving field ...
openaire +2 more sources
Drivers of Mid‐Latitude Quiet‐Time Longitude Variations in Ionospheric Density
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract The aim of this study is to provide an observational benchmark of mid‐latitude quiet‐time variability in winds, O/N2, and TEC across longitude and local time to provide a foundation for future model–data comparison studies. The quiet‐time ionospheric structure is not uniform but rather exhibits pronounced longitudinal and local‐time ...
K. R. Greer +3 more
wiley +1 more source
Effects of strong IMF Bz southward events on the equatorial and mid-latitude ionosphere [PDF]
Annales Geophysicae, 2009 Dayside ionospheric response to five intense geomagnetic storms (Dst<−120 nT) that occurred in 2001–2005 was investigated by use of simultaneous TEC measurements by the CHAMP, SAC-C, TOPEX/Jason-1 satellites.
E. Astafyeva, E. Astafyeva
doaj +1 more source
Pengaruh penginapan ke atas disiplin pelajar di Universiti Tun Hussein Onn Malaysia [PDF]
, 2008 Kajian pengaruh penginapan ke atas disiplin pelajar di Universiti Tun Hussein Onn Malaysia (UTHM) ini memfokuskan kepada tiga objektif iaitu mengenal pasti tahap kriteria penginapan dari aspek fizikal dan bukan fizikal yang memberi kesan terhadap ...
Yaacob, Mohd Asmedi
core
Equatorial Ionospheric Scintillation During Daytime
Eos, 2018 Scintillation—flickers and distortions in radio waves passing through the ionosphere—can happen during daytime and at much lower dip latitudes than previously thought.
openaire +1 more source
Detection of Equatorial Plasma Bubbles Using the COSMIC‐2 Rate of TEC Index
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract Equatorial plasma bubbles (EPBs) are large‐scale plasma depletion structures that can disrupt Global Navigation Satellite Systems (GNSS) and other space‐based technologies. Several instruments have been employed to study EPB dynamics, with Total Electron Content (TEC) and Rate of TEC change Index (ROTI) data standing out as valuable parameters
Ana L. Christovam +2 more
wiley +1 more source
The ultra-fast Kelvin waves in the equatorial ionosphere: observations and modeling [PDF]
Annales Geophysicae, 2013 The main purpose of this study is to investigate the vertical coupling between the mesosphere and lower thermosphere (MLT) region and the ionosphere through ultra-fast Kelvin (UFK) waves in the equatorial atmosphere.
A. N. Onohara +2 more
doaj +1 more source
A new model for the substorm growth phase [PDF]
, 2014 Thesis (Ph.D.) University of Alaska Fairbanks, 2014.The physics of geomagnetic substorms has been under debate for a long time. In particular, the formation of a thin current sheet (CS) is a central unresolved problem because it provides the magnetotail ...
Hsieh, Min-Shiu, 謝旻秀
core
Constraining Electron‐Impact Ionization of O2 Through UV Aurora Observations at Ganymede
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract While photoionization rates of Ganymede's O2 ${\mathrm{O}}_{2}$ dominated atmosphere are well constrained, the contribution of electron‐impact ionization is rather uncertain. Previous quantitative estimates have relied on assumptions about densities and energy distributions of precipitating electrons, or on rare spacecraft measurements that ...
Stefan Duling +5 more
wiley +1 more source