Study of Total Magnetic Field Intensity Variation (F) at Maitri, Antarctica Variations Over 1922-1996.

Access URI: http://npdc.ncaor.gov.in/npdc/search_mf_data.action?search=freeText&expedition_type=all&parameter=MF-2113714402&userType=user&freeTextValue=Study+of+Total+Magnetic+Field+Intensity+Variation+%28F%29+at+Maitri%2C+Antarctica+Variations+Over+1922-1996.

Brief Description (Abstract):

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 Z, 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.

Status: Completed

Purpose: The total field (F) at Dakshin Gangotri (Geog lat. 70? 05 S, long. 12? E), Antarctica, was first recorded in 1982, using a Proton Procession Magnetometer (PPM)(Iyengar and Rajaram, 1983). During subsequent years the PPM was replaced by a fluxgate magnetometer, recording variations in the three orthogonal components X (North-South), Y (East-West) and Z (Vertical). A PPM was once again used at Dakshin Gangotri (DG) during Jan-Mar 1986 and during Jan 1996, to record the absolute value of F. In both cases a fluxgate magnetometer was operated simultaneously, and the results obtained from a comparison ef A F, A X, A Y, and A Z are discussed.

Presentation Format: Documentdigital

Distribution Format: unknown

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Supplemental Information:

TableDigital

Keyword(s): Earth Science-Solid Earth,

Place/Location(s): Maitri, Antarctic,

Project: Study of Total Magnetic Field Intensity Variation (F) at Maitri,

Topic Category(s): GeoScientific Information,

Date(s): 2020-08-17 (Creation),

Resource Contact(s):
1. Name : Dr. Arun Patil
    Role : PrincipalInvestigator
    Phone : 8322525515
    E-Mail : ictd [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Distributor Contact(s):
1. Name : Mr. Sakthivel Samy V
    Role : Distributor
    Phone : +91-832-2525515
    E-Mail : vssamy [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Metadata Contact(s):
1. Name : Mr. Sakthivel Samy V
    Role : PointOfContact
    Phone : +91-832-2525515
    E-Mail : vssamy [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Extent:
Start Date : 1995-01-01
End Date   : 1996-12-31