Monday, 23 January 2017

Chance of major quakes as new coronal hole on the Sun turns to face Earth


As a large coronal hole on the Sun moves away from facing the Earth another large one is turning to face us, therefore we could be in for more large quakes in the coming days.
Coronal holes are considered by some experts to be the primary earthquake factor. Look for the dark patches on our Sun, which indicate that the interplanetary magnetic fields connecting earth to the sun may be about to experience significant fluctuations of energy.


Spaceweather.com reports: A coronal hole has opened in the sun's atmosphere, and it is spewing a stream of solar wind into space.  An extreme ultraviolet telescope on board NASA's Solar Dynamics Observatory photographed the structure turning to face Earth on Jan. 23rd:
This is a "coronal hole" (CH)--a region in the sun's atmosphere where the magnetic field opens up and allows solar wind to escape to escape. A gaseous stream emerging from this coronal hole should reach Earth on or about Jan. 27th.  Arctic sky watchers, mark your calendars.  Auroras are in the offing later this week.

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According to Ben Davidson of quakewatch.net, the occurrence of geomagnetic storms appears to have a depressive effect on earthquakes during the peak of the storms. Often the primary risk window begins when a coronal hole begins facing earth, and ends when geomagnetic storms occur, or when the coronal hole leaves the earth-facing half of the sun.