Premium
Penetration of magnetospheric convective electric field to the equatorial ionosphere during the substorm of March 22, 1979
Author(s) -
Somayajulu V. V.,
Reddy C. A.,
Viswanathan K. S.
Publication year - 1987
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl014i008p00876
Subject(s) - substorm , electrojet , geophysics , electric field , ionosphere , convection , ring current , ionospheric dynamo region , interplanetary magnetic field , magnetosphere , interplanetary spaceflight , atmospheric sciences , physics , earth's magnetic field , geology , magnetic field , solar wind , meteorology , quantum mechanics
The possible penetration of magnetospheric convective electric field to low latitudes is investigated with the help of VHF radar measurements of equatorial electrojet electric fields during the 1054 UT substorm of March 22, 1979. The observed time relationship of these electric fields with the southward component of the interplanetary magnetic field and the polar‐auroral magnetic activity suggests that the magnetospheric convective electric fields may penetrate to low latitudes, at least on certain occasions during the growth phase of a substorm before screening by ring current becomes effective.