seismic sea wave

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seismic sea wave:

see tsunamitsunami
, series of catastrophic ocean waves generated by submarine movements, which may be caused by earthquakes, volcanic eruptions, landslides beneath the ocean, or an asteroid striking the earth. Tsunamis are also called seismic sea waves or, popularly, tidal waves.
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References in periodicals archive ?
Tad Murty of the Tsunami Society has estimated the Boxing Day "seismic sea waves," as the oceanographers call them, to have contained the energy equivalent of about five megatons of TNT.