Base on tsunami historical, Tsunami disaster can make destroy and loss material of every place who get tsunami wave inundation. A Tsunami is a seismically generated gravity waves, characterised by wave periods that are in the order of minutes rather than seconds. Tsunami are sometimes referred to as tidal waves, a term that has fallen out of favor, especially in the scientific community, in recent years because tsunami actually have nothing to do with tides. The once popular term derives from their most common appearance, which is that of an extraordinarily high incoming tide. Tsunami and tides both produce waves of water that move inland, but in the case of tsunami the inland movement of water is much greater and lasts for a longer period, giving the impression of an incredibly high tide.
It is very danger for many peoples in coastal area and arround coastal zona. Tsunami disaster also can make many victims and peoples be dead. The cities who have high vulnerabilty zone of tsunami disaster, they have to make mitigation planning for prevent and recovery many loss material and peoples death. For indonesia people, tsunami disaster is very familiar in their live. From 1900 until 2006 was happen more than 19 tsunami disaster. From this case 15 tsunami disaster occured in the eastern part of indonesia which we knew in this areas also we called very active and complex seismotectonic zone. Tsunami wave in Aceh (26 December 2004) caused many people be dead. In 2006, Tsunami also occured in Pangandaran, Cilacap and Kebumen. It make conclusion that Indonesia have high susceptibility of tsunami disaster.
by: Ratih Fitria Putri (Double Degree Master Program MPPDAS GMU - Remote Sensing Chiba University Japan)
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