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Today in Earthquake History

Today in Earthquake History

Today's Earthquake Fact:
A seismic wave shadow zone was discovered in about 1910, by measuring how P and S waves travel through the earth and out the other side. From the lack of S waves and a great slowing of the P wave velocity (by about 40%), it was deduced that the outer core is made of liquid. The shadow zone also defined the diameter of the core.

March   27

Note: All earthquake dates are UTC, not local time.


Year Location Magnitude Comment
1984 Near North Coast of New Guinea, Papua New Guinea

Epicenter
6.8 Eleven people injured and many buildings destroyed (VIII) on Karkar. Minor ground fissures and two holes 3-7 meters in diameter and 2 meters deep occurred.
From Significant Earthquakes of the World, 1984.

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