Pacific Tsunami Warning Center
The Pacific Tsunami Warning Center ( PTWC ) is a tsunami - early warning system , which is responsible for the international Tsunami prediction and warning the population in the area of the Pacific is to perform. It is operated by the US state's National Oceanic and Atmospheric Administration ( NOAA ).
history
The PTWC was created as a result of the Aleutian earthquake in 1946 , which triggered a severe tsunami . This claimed 165 lives in Hawaii and Alaska . As a result, the PTWC was set up in Ewa Beach , Hawaii in 1949 .
The PTWC is operated by the National Oceanic and Atmospheric Administration ( NOAA ).
Working method
Occurring earthquakes are registered via a distributed network of seismometers and the strength (see Richter scale ) and the position of the earthquake are determined. If the earthquake turns out to be a seaquake after the evaluation , measurements of the wave movements, changes in sea level and changes in pressure are used to determine whether the earthquake triggered a tsunami (see web link to DART). If, after evaluating the measurement data, there is a possibility of a tsunami, a warning is issued for the endangered areas.
See also
- German Indonesian Tsunami Early Warning System , established after the 2004 Indian Ocean earthquake
- Malaysian National Tsunami Early Warning System