Applications
B1-8 ENVI-MAG Manual
Figure B-8 Typical diurnal variation (after Breiner, 1973).
Micro-pulsations
Erratic, short-term blips or spikes in the magnetic field are called micro-
pulsations. These can range in intensity from a few through to tens or even
hundreds of nanoTeslas in intensity, as can be seen in the next figure
(Figure B-9). These can present a problem when you are surveying in that
they may appear similar to anomalies caused by buried objects.
Figure B-9 Typical micro-pulsations (after Breiner, 1973).
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