Open AccessLow‐latitude infrasonics associated with geomagnetic activity
Author(s) -
Srivastava B. J.,
Venkatachari R.,
Saha A. K.
Publication year - 1982
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1982.tb04996.x
Subject(s) - earth's magnetic field , low latitude , geomagnetic storm , infrasound , geomagnetic latitude , geology , latitude , storm , geophysics , range (aeronautics) , ionosphere , climatology , atmospheric sciences , meteorology , geodesy , physics , magnetic field , oceanography , quantum mechanics , materials science , acoustics , composite material
Summary. Certain associated fluctuations in geomagnetic records and infrasonic pressure variations at ground level noted at Hyderabad and Delhi are discussed with the help of simultaneous records taken during 1980. Typical infrasound signals are noted, apparently generated by the magnetic substorms in the auroral zones and travelling down to near tropical latitudes with speeds in the range of 400–500m s ‐1 . Characteristic signatures in infrasound records, corresponding to SSCs and storm time fluctuations are also noted, but only when substorms are associated with the storms.