Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/25735
Title: Magnetic disturbance effect on geomagnetic field at low latitudes
Authors: James, M E
Rastogi, R G
Winch, D E
Keywords: Geomagnetic storms;Dst index;Dipole and dip declination
Issue Date: Apr-2004
Publisher: NISCAIR-CSIR, India
PACS No.: 91.25-r; 94.30.Lr
Abstract: Relationship between daily means of H and Y fields with Dst index for stations with in a low latitude belt around the world has been investigated. The H field decreases linearly with decreasing Dst, the slope being less than unity at all stations. But Y field variation with Dst exhibited a longitudinal dependence. The ring current follows the dipole coordinates and not the dip coordinates and hence changes in Y field are related to both dipole declination (ѱ) and dip declination (D) such that ΔYH = sin(ѱ-D), both in sign and magnitude. Good correspondence is seen between ΔYH and sin(ѱ-D) for all stations in the equatorial belt.
Page(s): 88-94
URI: http://hdl.handle.net/123456789/25735
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.33(2) [April 2004]

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