[GeoStL] North pole moved
- From: Brad Myers <bmyers88@xxxxxxxxxxx>
- To: Geocaching List <geocaching@xxxxxxxxxxxxx>
- Date: Fri, 14 Jan 2005 16:00:17 -0600
-
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Now I have an excuse for not finding the caches.
*
Article on www.cnet.com
*
*Daytime is now 2.68 microseconds shorter because of last month's tsunami.*
The massive force unleashed by an earthquake off the coast of Indonesia
</Tsunami+relief+highlights+Web+efforts/2009-1038_3-5511430.html?tag=nl>
altered the shape of Earth in a number of minute yet significant ways,
NASA scientists have determined.
In data released this week, NASA determined that the Dec. 26 earthquake
moved the North Pole, which constantly jiggles slightly, 2.5
centimeters--about an inch--in an eastward shift that is part of a
long-term seismic shift.
Earth also became slightly more round, as the planet's oblateness, the
quality of being flattish on top and bulging at the equator, decreased
by a small amount. Further, daytime decreased by 2.68 microseconds
because Earth now spins slightly faster on its axis. The phenomenon is
similar to a figure skater in a twirl pulling his or her arms in
slightly closer.
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