Tsunami strike without warning. The resulting damage can be minimized and lives can be saved if the people living near the coastal areas are already prepared survive the strike .This requires a warning system. The warning signal can be transmitted to different places using satellite communication network, fiber -optics network, cell phone service or a combination of these. For sea side areas, an alert system using Global System for Mobile communication (GSM) network is proposed. This system does not try to find the origin of tsunami waves but it simply generates an alert signal when the pressure level of sea water crosses a threshold.
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