Results 61 to 70 of about 6,013 (205)

On Ps6 and longer period geomagnetic pulsations in the Indian equatorial region [PDF]

Annales Geophysicae, 1994
Adopting an appropriate procedure suitable for processing the amplitude-time records based on the two-component spectral analysis technique, the statistical information on Ps6 and other longer periods are worked out on the geomagnetic field ...
D. R. K. Rao, R. L. Asinkar
doaj   +1 more source

Simultaneous Observations of Electron Phase Space Density Variations in the Geostationary Orbit by GK2A, GOES‐16, and GOES‐17

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract This study presents simultaneous measurements of electron phase space density (PSD) gradients in geostationary orbit using data from GK2A, GOES‐16, and GOES‐17. By leveraging a three‐satellite configuration, we provide statistical results of PSD gradient estimation in invariant coordinates.
N.‐Y. Lee, J. Seon, G. W. Na, C.‐H. Lee, W.‐H. Seol, K.‐C. Kim   +5 more
wiley   +1 more source

Equatorial electrojet at African longitudes: first results from magnetic measurements [PDF]

Annales Geophysicae, 1998
In the framework of the French participation in the International Equatorial Electrojet Year (IEEY), ten magnetotelluric stations were installed between November 1992 and November 1994 along a 1200-km-long meridian profile, between Lamto (latitude 6.2°
V. Doumouya, J. Vassal, Y. Cohen, O. Fambitakoye, M. Menvielle   +4 more
doaj   +1 more source

Jupiter's polar ionospheric flows: measured intensity and velocity variations poleward of the main auroral oval [PDF]

, 2003
Recent analysis of high-resolution spectra of Doppler-shifted H3+ emission from the auroral/polar regions of Jupiter revealed a complex wind system, with a persistent auroral electrojet and strong anti-sunward flows in a region of lesser intensity ...
Bunce, E.J., Cowley, S.W.H., Miller, S., Stallard, T.S.   +3 more
core  

Frequency Extensions of Auroral Kilometric Radiation: The Key to Unlocking Earth's Radio Response to Substorms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Auroral kilometric radiation (AKR) provides a sensitive probe of magnetospheric dynamics during substorms. We analyze an extended data set of AKR bursts observed by the WIND spacecraft to investigate how the frequency structure of AKR responds to substorm onset and evolution.
Simon James Walker, Caitríona M. Jackman, Alexandra R. Fogg, Siyuan Wu, James E. Waters   +4 more
wiley   +1 more source

Electro-jet engine: a jet engine without turbine - Part 1. Presentation of electro-jet engine [PDF]

INCAS Bulletin
In accordance with efficiency criteria, the development of air transport has to the option of using large passenger airplanes, with capacities ranging from 200 to over 800 passengers and masses ranging from 100 to over 500 tons. These airplanes require a
Sorin NUTU
doaj   +1 more source

Magnetosphere-Ionosphere Coupling Through E-region Turbulence 1: Energy Budget

, 2011
During periods of intense geomagnetic activity, strong electric fields and currents penetrate from the magnetosphere into high-latitude ionosphere where they dissipate energy, form electrojets, and excite plasma instabilities in the E-region ionosphere ...
Amm, Ashrafi, Bahcivan, Bahcivan, Balsley, Buchert, Buneman, Cohen, Crochet, D'Angelo, Dimant, Dimant, Dimant, Dimant, Dimant, Dimant, Erukhimov, Farley, Farley, Fejer, Fontenla, Foster, Fukao, Gogoberidze, Guild, Gurevich, Hamza, Hamza, Hoh, John, Kagan, Kagan, Kelley, Koepke, Kudeki, Landau, Liperovsky, M. M. Oppenheim, Maeda, Merkin, Merkin, Merkin, Milikh, Milikh, Ober, Oppenheim, Pfaff, Pfaff, Pfaff, Pfaff, Providakes, Raeder, Raeder, Robinson, Robinson, Rogister, Rose, Schlegel, Schunk, Siscoe, St.-Maurice, St.-Maurice, St.-Maurice, St.-Maurice, Stauning, Vanhamäki, Wahlund, Wang, Williams, Winglee, Y. S. Dimant   +70 more
core   +1 more source

Intense Ground Magnetic Perturbations During the 2024 May and October Geomagnetic Storms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract The May and October 2024 geomagnetic storms represent two of the most intense space weather events of Solar Cycle 25. While differing in global intensity, both storms produced extreme ionospheric disturbances, including equatorward auroral expansion to mid‐latitudes and rapid geomagnetic variations (dH/dt $\text{dH}/\text{dt}$).
P. De Michelis, E. Consolini, F. Giannattasio, G. Consolini   +3 more
wiley   +1 more source

Spiral structures and regularities in magnetic field variations and auroras [PDF]

History of Geo- and Space Sciences, 2012
The conception of spiral shaped precipitation regions, where solar corpuscles penetrate the upper atmosphere, was introduced into geophysics by C. Störmer and K. Birkeland at the beginning of the last century.
Y. I. Feldstein, L. I. Gromova, M. Förster, A. E. Levitin   +3 more
doaj   +1 more source

Analysis of Ionospheric Correlation Time Variations Based on Long‐Term GIMs Data

Space Weather, Volume 24, Issue 3, March 2026.
Abstract Ionospheric correlation time measures the temporal correlation of the ionosphere and is an important parameter for characterizing the temporal connection of ionospheric variability. Ionospheric correlation times are obtained from high resolution global ionospheric TEC maps spanning 2005 to 2020.
Sicheng Wang, Sheng Guo, Sixun Huang
wiley   +1 more source