Study of total magnetic field intensity variation (F) at Maitri, Antarctica variations over 1922-1996

The total geomagnetic field intensity (F) was recorded at the Indian Antarctic Station, Maitri (MAI), during Jan 1996, using a Proton Precession Magnetometer (PPM). The PPM data was compared with the variations in intensity of the three orthogonal components of the geomagnetic field X, Y and recorde...

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Bibliographic Details
Main Authors: Patil, A., Dhar, Ajay, Sankaran, S., Rajaram, G.
Format: Report
Language:English
Published: 1999
Subjects:
Online Access:http://14.139.123.141:8080/jspui/handle/123456789/156
Description
Summary:The total geomagnetic field intensity (F) was recorded at the Indian Antarctic Station, Maitri (MAI), during Jan 1996, using a Proton Precession Magnetometer (PPM). The PPM data was compared with the variations in intensity of the three orthogonal components of the geomagnetic field X, Y and recorded by using a Fluxgate Magnetometer (FM). The F values as expected, showed a matching trend with the Z component during magnetically quiet conditions. During magnetically disturbed conditions however, a sizeable contribution from the other two components X and Y, was also observed. A remarkable observation was that the total field at Maitri, when compared to the value at this geographic location from previous records had declined by 9000 nT over the period .1922-1996.