micropulsation


Also found in: Dictionary.

micropulsation

[¦mī·krō·pəl′sā·shən]
(geophysics)
A short-period geomagnetic variation in the range of about 0.2-600 seconds, typically exhibiting an oscillatory waveform.
References in periodicals archive ?
Finally, there is a group of periodic magnetic perturbations called short-period variations, or magnetic micropulsations. The periods of these oscillations cover the range from hundredths of a second to several minutes, while the amplitude does not exceed several [gamma], i.e., the whole frequency range of periodic geomagnetic oscillations ranges from 10-5 to hundreds of hertz.
We show some important observations of different investigators as well as some micropulsations and seismic activity recorded in Mexico.