Speed accuracyAn important principle in the alarm is a race against time and precision. By tsunami warning, it will take longer than an earthquake alarm, because there must be a detailed calculation. The technology to measure earthquakes and estimate the level of severity of the tsunami has been developed. Make the target alarm duration decreased every year from 20 minutes in the year 2508 (r. 1965) decreased came as minutes of the year (1979) and 2522 (1979) 3 minutes in 2537 (, 1994), respectively.
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