Question

What are different earth magnetic elements. Define 2?

Answer 1

1. Magnetic declination (θ): 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.Dip or inclination (δ): The angle made between the total of earth’s magnetic field (Be) with the surface of the earth (horizontal component) in the magnetic meridian is known as angle of dip.

3.The horizontal component of the Earth’s magnetic field (He) : The total magnetic field on the surface of the earth can be resolved into horizontal component He and vertical component Ze. The angle made by Be with He is the angle of dip δ

Hence,He =  Be cos δ

Ve =  Be sin δ

Ve  / He =  Be tan δ