English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Effect of the equatorward shift of the\udeastward and westward electrojets during magnetic storms main phase is analyzed\udbased on the meridional chains of magnetic observatories EISCAT and IMAGE and\udseveral Russian observatories (geomagnetic longitude ~110°,\udcorrected geomagnetic latitudes 74°F 51°.)\udMagnetic storms of various Dst index intensity where the main phase falls\udon 1000 UT - 2400 UT interval were selected so that one of the observatory\udchains was located in the afternoon - near midnight sector of MLT. The eastward\udelectrojet center shifts equatorward with Dst intensity increase: when Dst\ud~ - 50 nT the electrojet center is located at F ~ 62°,\udwhen Dst ~ -300 nT it is placed at F ~54°.\udThe westward electrojet center during magnetic storms main phase for intervals\udbetween substorms shifts equatorward with Dst increase: at F~ \ud62° when Dst ~ -100 nT and at F ~\ud55° when Dst ~ -300 nT. During substorms within the magnetic\udstorms intervals the westward electrojet widens poleward covering latitudes F~ \ud64°- 65°. DMSP (F08, F10 and F11) satellite\udobservations of auroral energy plasma precipitations at upper atmosphere\udaltitudes were used to determine precipitation region structure and location of\udboundaries of various plasma domains during magnetic storms on May 10-11, 1992,\udFebruary 5-7 and February 21-22, 1994. Interrelationships between center\udlocation, poleward and equatorward boundaries of electrojets and characteristic\udplasma regions are discussed. The electrojet center, poleward and equatorward\udboundaries along the magnetic observatories meridional chain were mapped to the\udmagnetosphere using the geomagnetic field paraboloid model. The location of\udauroral energy oxygen ion regions in the night and evening magnetosphere is\uddetermined. Considerations are presented on the mechanism causing the appearance\udin the inner magnetosphere during active intervals of magnetic storms of ions\udwith energy of tens KeV. In the framework of the magnetospheric magnetic field\udparaboloid model the influence of the ring current and magnetospheric tail\udplasma sheet currents on large-scale magnetosphere structure is considered. Key words. Ionosphere (particle precipitation) ·\udMagnetospheric physics (current systems; magnetospheric configuration and\uddynamics)

annales geophysicae

Auroral electrojet dynamics during magnetic storms, connection with plasma precipitation and large-scale structure of the magnetospheric magnetic field