is there tsunami warning

Tsunami warning system - Wikipedia, the free encyclopedia


** Tsunami warning system **

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Evacuation route sign in a low-lying coastal area on the West Coast of the
United States

A *tsunami warning system* (*TWS*) is used to detect tsunamis in advance
and issue warnings to prevent loss of life and damage. It is made up of two
equally important components: a network of sensors to detect tsunamis and a
communications infrastructure to issue timely alarms to permit evacuation
of the coastal areas. There are two distinct types of tsunami warning
systems: *international* and *regional*. When operating, seismic alerts are
used to instigate the watches and warnings; then, data from observed sea
level height (either shore-based tide gauges or DART buoys) are used to
verify the existence of a tsunami. Other systems have been proposed to
augment the warning procedures; for example, it has been suggested that the
duration and frequency content of t-wave energy (which is earthquake energy
trapped in the ocean SOFAR channel) is indicative of an earthquake's
tsunami potential.^[1]


· 1 History and forecasting
· 2 International warning systems (IWS)

· 2.1 Pacific Ocean
· 2.2 Indian Ocean (ICG/IOTWS)
· 2.3 North Eastern Atlantic, the Mediterranean and Connected Seas


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