KNOWING ABOUT TSUNAMI

KNOWING ABOUT TSUNAMI

Tsunami, this shocking word is always mentioned by many people and until now is still showed in every media which caused by the disaster that hit some places like in Aceh, Srilangka, India, Thailand, and other places and other regions that killed thousands of people. According to some theories, tsunami is a great ocean wave that happened because of earthquake or the blast of erupted mountain under the sea. Thus, what had happened in Aceh on Monday, December 26, 2005 was caused by an earthquake. Earthquake that has happened in Aceh was not an instant event. This effect for Aceh constitutes a hundred-year process where the pressure of Indian Ocean’s straight will be increased till passed by the strength of rocks, until the rocks beneath the archipelago will break and move-slide unexpectedly.
First, the ocean straight moved beneath the Sumatra Island, the islands adhere to the straight until pushed down and dragged beneath. It’s not strange for Aceh because the West Coast area has the potential to have it, because its position is on the line of continent straight’s collision. Where the ocean straight (Indian Ocean’s straight or Indo-australian straight) moved from south to the north, beneath of Mentawai archipelago and Sumatra island which the continent straight or what so-called Eurasian straight.
Then, once upon a time the connection between islands and straight broke, and soon after the islands bouncing up, the earthquake would be happened, as a picture, the rocks beneath the islands act as a spring which pushed slowly. When the strength of rocks passed by till break, then the pressure will be released suddenly and the islands will bouncing back to the west coast of Aceh.
Last, when the island rose, the sea level decreased away from the coast, however, returned again as a wave that so-called tsunami. Even thought tsunami can only as high as few centimeters, however, it could be tens of meters.
Those tens waves that wiped out west coast of Aceh, crushing the cities and the local inhabitants, then dragged people back to the sea. Unfortunately, people were late to realize if the tsunami had come.