Sat February 23, 2013 By: Shrijeet

Explain the definitions of magnetic declination,magnetic dip and horizontal component of earth's magnetic field?

Expert Reply
Sat February 23, 2013
Elements of the earth’s magnetic field are:
1.  Magnetic declination (?): At a point on earth the magnetic meridian makes an angle with the geographic meridian. This angle is known as the magnetic declination or just declination.
2.  Angle of dip (?): It is the angle made by the direction of the earth’s total magnetic field with the horizontal direction.
3.  Horizontal component of earth’s magnetic field (BH): It is the component of earth’s magnetic field along the horizontal direction.
So the angle of dip is the angle between earth’s magnetic field i.e. B and the horizontal component i.e. BH.
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