SeisMac Graph

SeisMac Graph
This is Dick's recording of the 2nd big aftershock today - originally registered at 6.9 and later downgraded to 6.7. Sudden motion sensors surrounding the hard drives in Macintosh computers are used to record the seismic motion of earthquakes.

Be sure to check out the older posts for earthquake photos.

Thanks to all for their concerns for our safety and well-being!

Thursday, March 4, 2010

Aftershocks & Chile's Plate Tectonics

The aftershocks we have felt since the big one are too numerous to count. Each day brings a couple of stronger ones - 6+ magnitude and several smaller ones (5+). The initial quake has been reported as an 8.8 magnitude that would make it one of the top ten in the last 100 years. For a complete list, see Latest Earthquakes in the World - Last 7 Days and its archives. Scientists estimate that it was 500 times stronger than the recent earthquake in Haiti. For those interested in why this quake happened where and when it did, see Chile’s Plate Tectonics.

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