Newspaper article The Canadian Press

Some Facts on Tsunamis and How to Respond When Warnings Are Issued

Newspaper article The Canadian Press

Some Facts on Tsunamis and How to Respond When Warnings Are Issued

Article excerpt

Facts on tsunamis and how to respond to warnings

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VANCOUVER - Some facts on tsunamis after a warning on Tuesday caused people in communities along the coast of British Columbia to head to higher ground:

What is a tsunami? Japanese for "harbour wave," a tsunami is a series of huge ocean waves caused by a rapid and large-scale disturbance of sea water. They can be caused by submarine volcanic eruptions, submarine landslides, and major earthquakes beneath the seabed.

How high are tsunami waves? In deep water, the waves are less than a metre high but they can travel at speeds exceeding 800 kilometres per hour. When the waves reach shallow water or narrow inlets they slow down and can build into a wall of water that causes devastation on shore.

What is Canada's experience? …

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