 Hello. We're H1 Geography students. We're doing a case study on the Indian Ocean Tsunami that occured in 2004. We hope this blog will be of help for you to have a better understanding of the incident. Animation 
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Monday, March 22, 2010
/ Signs and Warnings  All the victims were taken completely by surprise. There were no tsunami warning systems in the Indian Ocean to detect tsunamis or to warn the general populace living around the ocean. Tsunami detection is not easy because it requires a network of sensors to detect the and the warning system is not entirely reliable. The shortcoming of the warning systems is that it cannot detect sudden waves. Setting up the communications infrastructure to issue timely warnings is a problem particularly for the poorer countires. The first warning sign of a possible tsunami is the earthquake itself. However, tsunami can strike thousands of kilometres away where the earthquake is only felt weakly or not at all. Also, in a few minutes before a tsunami strikes, the sea may recedes temporarily from the coast. However, not all tsunami causes this 'disappearing sea' effect. In some cases, the sea will suddenly rise up without retreating, surprising many people and leave them little time to escape. It is also interesting to note that very few animals were killed by the tsunami. Apparently before the tsunami hits, elephants were seen running to higher ground and dogs refused to go outdoors. It is said that animals can sense when a disaster is coming. In the wake of the 2004 indian ocean tsunami , there is now an awareness of the need for a tsunami warning system for the Indian Ocean. The United Nations started working on an Indian Ocean Tsunami Warning System and by 2005, they had the initial steps in place. Some have even proposed creating a unified global tsunami warning system, to include the Atlantic Ocean and Caribbean. 7:37 AM ! |
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