angle of dip
Quick Summary
The angle of dip, also known as magnetic inclination, is the angle between the Earth's surface and the total magnetic field vector. This angle is measured using an instrument called a dip circle, which has a magnetic needle that swings vertically.1
There are two main dip poles on Earth where the dip is 90 degrees, meaning the magnetic field is perpendicular to the surface. These are located on the Antarctic coast and in Canada's Arctic. Local dip poles can also occur over areas with strong magnetic mineral deposits.2
Additionally, a dipmeter is an instrument used to determine the direction and angle of geological formations' dip.3
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