seaquake

sea·quake  (skwk)

n.

An earthquake originating under the sea floor.

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[sea + (earth)quake.]

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seaquake [ˈsiːˌkweɪk]

n

(Earth Sciences / Geological Science) Obsolete an agitation and disturbance of the sea caused by an earthquake at the sea bed. It is now usually described as an earthquake

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seaquake  (skwk)

An earthquake originating under the ocean floor. Seaquakes are caused by shifting of the tectonic plates at the bottom of the ocean. The seabed pushes and pulls on the water above it, sending violent pressure waves toward the surface and often creating tsunamis.

Thesaurus

Noun

1.

seaquake - an earthquake at the sea bed submarine earthquake earthquake, quake, seism, temblor - shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity