Ocean Observing Systems (OOS) and March 11, 2011 Tsunami Warnings

Ocean Observing Systems (OOS) have many sensor to detect earthquakes and tsunamis.

Japan’s most powerful earthquake since records began has struck the north-east coast, triggering a massive tsunami. A massive 8.9 magnitude earthquake hit the Pacific Ocean nearby Northeastern Japan at around 2:46pm on March 11 (JST) causing damage with blackouts, fire and tsunami.

Cars, ships and buildings were swept away by a wall of water after the 8.9-magnitude tremor, which struck about 400km (250 miles) north-east of Tokyo.

A state of emergency has been declared at a nuclear power plant, where pressure has exceeded normal levels.

The following videos provide good information.
http://www.youtube.com/user/NOAAPMEL?feature=mhum#p/c/3BDBAAAA7D4EB2DA/0/2mKbFORiDzg

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