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A tsunami precursor is an omen of a tsunami strike, with the general phenomenon of rapid ebb. During these golden hours of ebb for escaping, people must evacuate from seashore so that serious injuries can be prevented.
Tsunami clock is an emergency evacuation notification device for tsunami strikes which can be installed underwater by seashores. In case of rapid ebb and the sea level reaching a dangerous point under the location of the tsunami clock, the broadcasting system for evacuation and the evacuation warning signals of the clock would be triggered, to notify people by the seashore to evacuate as soon as possible for their safety.
National Chiao Tung University