Organization of the magnetosphere during substorms [PDF]
, 2011 The change in degree of organization of the magnetosphere during substorms is investigated by analyzing various geomagnetic indices, as well as interplanetary magnetic field z-component and solar wind flow speed.
Abarbanel +44 more
core +2 more sources
Electrodynamical response of the Indian low-mid latitude ionosphere to the very large solar flare of 28 October 2003 – a case study [PDF]
Annales Geophysicae, 2009 The electrodynamic effects on the low-mid latitude ionospheric region have been investigated using GPS (global positioning system) data, ionosonde data and ΔH values, during the very large solar flare (X17.2/4B) of 28 October 2003.
G. Manju +4 more
doaj +1 more source
Theory of auroral electrojets [PDF]
Journal of Geophysical Research, 1963 Two mechanisms are described for the formation of electrojet currents in the auroral zone. Both mechanisms require the existence of magnetospheric convection in which only particles of relatively low energy participate. It is essential to both mechanisms that particles of one sign (positively or negatively charged) should predominate among the ...
openaire +1 more source
Real-time determination and monitoring of the auroral electrojet boundaries
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 +1 more source
VLF, magnetic bay and Pi2 substorm signatures at auroral and midlatitude ground stations [PDF]
, 2002 A superposed epoch analysis of 100–300 substorms is performed to determine the median size and shape of the substorm-associated VLF chorus, magnetic bay, and Pi2 pulsation burst observed at the near-auroral Halley research station, Antarctica, and at the
Freeman, M.P. +3 more
core +1 more source
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
Morphological aspects of a new type of counter electrojet event [PDF]
Annales Geophysicae, 1999 The study describes the time and space morphologies of a rather new type of counter electrojet event on the basis of data from the excellent chain of magnetic and ionospheric observatories along the Indo-Russian longitude sector.
R. G. Rastogi
doaj +1 more source
Neural networks technique for detecting current systems while main phase of geomagnetic storm [PDF]
E3S Web of Conferences, 2020 The study demonstrated the technology for searching nonlinear correlations between the intensity indices of auroral electric jets (AU, AL) and ring current intensity indices (SYM, ASY).
Barkhatov N. A. +4 more
doaj +1 more source
Counter electrojet features in the Brazilian sector: simultaneous observation by radar, digital sounder and magnetometers [PDF]
Annales Geophysicae, 2009 In the present work we show new results regarding equatorial counter electrojet (CEJ) events in the Brazilian sector, based on the RESCO radar, two set of fluxgate magnetometer systems and a digital sounder.
C. M. Denardini +7 more
doaj +1 more source
Dayside and nightside contributions to cross-polar cap potential variations: the 20 March 2001 ICME case [PDF]
Annales Geophysicae, 2011 We investigate the association between temporal-spatial structure of polar cap convection and auroral electrojet intensifications during a 5-h-long interval of strong forcing of the magnetosphere by an ICME/Magnetic cloud on 20 March 2001. We use data
Y. L. Andalsvik +2 more
doaj +1 more source