What is the Angle of Dip?

The angle of dip, also known as the magnetic dip or magnetic inclination is the angle made by the Earth’s magnetic field lines with the horizontal. It is defined as the angle in the vertical plane aligned with the magnetic north (the magnetic meridian) between the local magnetic field and the horizontal. The angle of dip is represented between zero degrees to 90 degrees. If the magnetic field points downward to the earth at any measurement point, it means that the angle of dip is positive. If the angle of dip is negative, the magnetic field points upwards.

Variation is observed in the angle of dip from point to point at the earth’s surface and it provides information about the movement of the earth’s magnetic field. The angle of dip plays an important role in field mapping and geological field. For any tilted bed, the dip helps in providing the steepest angle of descent relative to a horizontal plane.

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