Authors / CoAuthors
Lewis, A.M.
Abstract
Absolute observations of the vector geomagnetic field were made 1.60 m above ground level at the marked centre of Darwin International Airport (DIA) compass swing site on taxi-way C4 on Monday 19 November 2012 (coordinated universal time). The observations were made during geomagnetic quiet conditions. The average observed values were +3.46°, -39.65° and 46285 nT in declination, inclination and total magnetic intensity respectively. When corrected to average undisturbed values of the field, using data from the Kakadu Geomagnetic Observatory to derive corrections, the adopted normal field values are +3.53°, -39.65°, 46272 nT in declination, inclination and total magnetic intensity respectively. Hence the magnetic declination at 1.60 m above ground level at the centre of the DIA compass swing site in November 2012 is +3.53°. This value has changed by -0.24° since it was previously determined in December 2007. Applying the November 2012 adopted value of magnetic declination to the true azimuth from the centre of the swing site to the aerodrome reference point gives the magnetic bearing from the centre of the swing site to the ARP of 123.766°.
Product Type
document
eCat Id
75058
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
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2601
Australia
Keywords
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- GA PublicationProfessional Opinion
- ( Theme )
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- geomagnetism
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- AU-NT
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Magnetism and Palaeomagnetism
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- Published_Internal
Publication Date
2012-01-01T00:00:00
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notPlanned
Topic Category
geoscientificInformation
Series Information
Professional Opinion 2012/11
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Unknown
Parent Information
Extents
[-12.409, -12.409, 130.869, 130.869]
Reference System
Spatial Resolution
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