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What does MAGVAR stand for?

MAGVAR stands for Magnetic Variation


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Samples in periodicals archive:

The term variometer is generally applied to any instrument that registers magnetic variations, whether it be changes in magnetic declination or any other component of the field, horizontal or vertical.
At last week's meeting in Boston of the American Geophysical Union, an international team unveiled a map of the minuscule magnetic variations in Antarctica and the seafloor surrounding it.
Being closer to the source also means stronger signals, which is more important in equatorial regions where diurnal magnetic variations (daily magnetic variations due to the sun) can be of the same magnitude as the crustal magnetic signal.