Geomagnetic Activity From CME Impact
Taken by Stuart Green on July 17, 2012 @
Preston, Lancashire, UK
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The longevity of the CME impact event which began on July 14th is clearly shown in this magnetic declination record collected over the last four days from my magnetic observatory in Lancashire, UK. Superimposed on the circadian magnetic declination cycles, which peak at around 6:00am daily are transient events created by the CME impact as it passed through and interacted with Earths magnetosphere.
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