Results 11 to 20 of about 2,555 (221)
Meridional motions of the afternoon radar aurora, auroral electrojets, and absorption patches under variable IMF conditions [PDF]
Annales Geophysicae, 2004 The meridional motions of the CUTLASS HF and STARE VHF coherent echoes, IMAGE equivalent electrojet currents, and IRIS absorption patches during the postnoon/early-evening event of 14 February 2000 are presented.
R. A. Makarevitch +4 more
doaj +3 more sources
Longitudinal variation of equatorial electrojet and the occurrence of its counter electrojet [PDF]
Annales Geophysicae, 2017 We examined the longitudinal variability of the equatorial electrojet (EEJ) and the occurrence of its counter electrojet (CEJ) using the available records of the horizontal component H of the geomagnetic field simultaneously recorded in the year 2009 (
A. B. Rabiu +5 more
doaj +4 more sources
Indices of equatorial electrojet and counter-electrojet in the Indian region: Evolution of the indices and their authenticity [PDF]
Journal of Earth System Science, 1983 Indices of the equatorial electrojet and counter-electrojet in the Indian region have been evolved based on certain reasonable assumptions, by a criterion depending on the difference in the horizontal field strength between a station under the electrojet axis (Trivandrum) and a station outside the jet influence (Alibag).
B N Bhargava, B R Arora, N S Sastri
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Distortions in the height structure of the equatorial electrojet during counter electrojet events
Journal of Atmospheric and Terrestrial Physics, 1994 This paper presents simultaneous observations made near the magnetic equator during counter electrojet events using a coherent VHF backscattcr radar, magnetometer and digital ionosonde to understand the physical processes that generate the counter electrojet conditions.
V.V. Somayajulu +3 more
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On the electrojet in South America [PDF]
pure and applied geophysics, 1968 The diurnal variation in the horizontal component (H) of south american stations under and close to the electrojet were plotted during the I.G.Y. Thus a dilatation towards the south of the electrojet in the western part of South America was inferred.
Affolter, Hugo Roberto
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RF heating in a strong auroral electrojet
Advances in Space Research, 1998 Results are reported from experiments in which the high power HF facility at Tromso, Norway was employed to modify the Hall current region of the auroral ionosphere during periods when the electrojet became enhanced. During conditions characterised by a weak electrojet and completely underdense heating, observations indicated that RF heating leads to ...
Robinson, T. R. +4 more
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Real-time determination and monitoring of the auroral electrojet boundaries [PDF]
Journal of Space Weather and Space Climate, 2013 A method for nowcasting of the auroral electrojet location from real-time geomagnetic data in the European sector is presented. Along the auroral ovals strong electrojet currents are flowing. The variation in the geomagnetic field caused by these auroral
Johnsen Magnar Gullikstad
doaj +2 more sources
Critical problems of equatorial electrojet
Advances in Space Research, 1992 This paper describes the general features of the equatorial electrojet current over the magnetic equator based on ground geomagnetic observatory data, rocket borne magnetometer data, ground based HF and VHF sounding of the atmosphere. Also are described its association with magnetosphere currents, interplanetary magnetic field charges and with ...
Rastogi, R. G.
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Equatorial electrojet and regular daily variation S—II. the centre of the equatorial electrojet
Journal of Atmospheric and Terrestrial Physics, 1976 Abstract Magnetic ground data have previously been described, and a method for the quantitative determination of the equatorial electrojet parameters (by splitting up the regular daily variation S R into the electrojet component S R E and the planetary component S R P ) presented ( fambita-koye and Mayaud , 1975).
O Fambitakoye, P.N Mayaud
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Electrojet Estimates From Mesospheric Magnetic Field Measurements [PDF]
, 2021 The auroral electrojet is traditionally measured remotely with magnetometers on ground or in low Earth orbit (LEO). The sparse distribution of measurements, combined with a vertical distance of some 100 km to ground and typically >300 km to LEO ...
J. H. Yee +24 more
core +2 more sources