Today in Earthquake History

Today's Earthquake Fact:
The core of the earth was the first internal structural element to be identified. In 1906 R.D. Oldham discovered the core from his studies of earthquake records. The inner core is solid, and the outer core is liquid and does not transmit the shear wave energy released during an earthquake.

Year at a Glance

March

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

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Year	Location	Magnitude	Comment

1933	Sanriku, Japan	8.4	3,000 deaths. One of the world's deadliest earthquakes. Because this earthquake occurred about 290 km (180 mi) off the coast of Honshu, most of the casualties and damage were caused by the large tsunami that was generated, instead of directly from the earthquake itself. About 5,000 houses in Japan were destroyed, of which nearly 3,000 were washed away. Maximum wave heights of 28.7 m (94 ft) were observed at Ryori Bay, Honshu. The tsunami also caused slight damage in Hawaii, where a 2.9-meter (9.5-foot) was recorded at Napoopoo.

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