In geophysics, a geomagnetic jerk or secular geomagnetic variation impulse is a relatively sudden change in the second derivative of the Earth's magnetic field with respect to time. These events were noted by Vincent Courtillot and Jean-Louis Le Mouël in 1976.
In geophysics, a geomagnetic jerk or secular geomagnetic variation impulse is a relatively sudden change in the second derivative of the Earth's magnetic field with respect to time. These events were noted by Vincent Courtillot and Jean-Louis Le Mouël in 1976.
Source: Wikipedia "Geomagnetic jerk" · CC BY-SA 4.0
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