Results 31 to 40 of about 3,685 (224)
Numerical modeling of the equatorial electrojet UT-variation on the basis of the model GSM TIP [PDF]
Advances in Radio Science, 2007 In the presented work the results of numerical modeling of the UT-variation of the equatorial electrojet, executed on the basis of the model GSM TIP are presented, taking into account the dynamo electric fields generated by thermospheric winds in a ...
M. V. Klimenko +2 more
doaj
The quiet-time equatorial electrojet and counter-electrojet.
Journal of geomagnetism and geoelectricity, 1979 Using ground magnetometer data from several stations near the dip equator, the magnetically quiet-time characteristics of the daytime normal electrojet and the morning and afternoon counter-electrojets are established and illustrated. In particular, the solar cycle, seasonal, longitudinal and day-to-day variations of counter-electrojets as well as ...
R. T. MARRIOTT +2 more
openaire +2 more sources
The field of the equatorial electrojet from CHAMP data [PDF]
Annales Geophysicae, 2006 We apply a simple linear transform, the along-track second derivative, to four years of scalar and vectorial data from the CHAMP satellite. This transform, reminiscent of techniques used in the interpretation of aeromagnetic surveys, is applied either
J.-L. Le Mouël +2 more
doaj +1 more source
Variations of the peak positions in the longitudinal profile of noon-time equatorial electrojet
Earth, Planets and Space, 2020 In this study, the seasonal variations of the EEJ longitudinal profiles were examined based on the full CHAMP satellite magnetic measurements from 2001 to 2010. A total of 7537 satellite noon-time passes across the magnetic dip-equator were analyzed.
Zié Tuo +4 more
doaj +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 +4 more
doaj +1 more source
Equatorial scintillations in relation to the development of ionization anomaly [PDF]
, 2006 International audienceThe irregularities in the electron density distribution of the ionosphere over the equatorial region frequently disrupt space-based communication and navigation links by causing severe amplitude and phase scintillations of signals ...
Dasgupta, Abhijeet, Paul, A., Ray, S.
core +2 more sources
French participation in the International Equatorial Electrojet Year [PDF]
Annales Geophysicae, 1998 Without abstractAcknowledgements. The IEEY studies in the African sector were made possible by the participation of a large number of institutes. Funding was provided by the Ministère Français de la Coopération (Département de la Recherche et des ...
Y. Cohen
doaj +1 more source
Signatures of storm sudden commencements in geomagnetic H, Y and Z fields at Indian observatories during 1958−1992 [PDF]
Annales Geophysicae, 1999 The work describes an intensive study of storm sudden commencement (SSC) impulses in horizontal (H), eastward (Y) and vertical (Z) fields at four Indian geomagnetic observatories between 1958–1992. The midday maximum of ΔH has been shown to exist even
R. G. Rastogi
doaj +1 more source
Up-down asymmetry of type I plasma waves in the equatorial electrojet region [PDF]
Annales Geophysicae, 1997 The up-down asymmetry of the type I plasma waves in the equatorial electrojet region during daytime is investigated. It is shown that the asymmetry is exhibited not only in the vertical direction but also is manifested in the oblique direction (24.6 ...
S. Ravindran, B. V. K. Murthy
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.Abstract Equatorial electrojet (EEJ) and solar quiet (Sq) currents with one vortex each in either hemisphere are key components of the ionospheric dynamo currents, driving geomagnetic diurnal variations observed at Earth's surface. However, the physical coupling between EEJ and Sq westward currents on the polar side of the vortex focus remains poorly ...
Xiaocan Liu +3 more
wiley +1 more source