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ISS World History ForumWelcome to the World History Forum for the International School of Sosua.
Fact 1: Tsunamis are huge waves forming at least 100 feet up, which can only occur in the open sea.
Fact 4: The word’s biggest tsunami occurred in the night of July 1958 at Alaska Panhandle with a height as tall as 3000 feet, covering 40 million cubic yards. Fact 5: Tsunamis usually happen with earthquake aftershocks but some tsunamis occur independently due to underwater land formations, tectonic movements, or surprising eruption of inactive underwater volcanoes. Fact 6:  A tsunami-like effect that occurs during a storm, which many people have mistaken as a tsunami when sea level rises and produces huge waves is known as storm surge. Fact 9: Tsunamis are extremely destructive that they killed nearly 500, 000 people in the Pacific Region alone over the last 2, 000 years.
It so happens that the earthquake under water pushes the water upward because the plates collide with each other and as it turns out the wave gets bigger and bigger and travel at a high speed. Tsunamis are caused by Earthquakes, Volcanoes, and Landslides, it depends on how powerful the natural disaster is on how powerful the Tsunami is.
Its better to escape a Tsunami on foot because if your in a car you will most likely to get caught in traffic unless your trying to leave with air support like helicopters, planes or jets or maybe even climbing steep slopes or going underground. The hypocenter of the main earthquake was approximately 160km (100mi) off the western coast of northern Sumatra and emanated from the ocean floor 30km (19mi) below the area’s mean sea level.
It doesn’t make any warning when to occur but whenever there is an earthquake, people who live near the coast already knew they would run for safety soon. People living in beach areas with small seas and surrounding islands need not worry about tsunamis.
However, 80% of the biggest tsunamis that had occurred in the past years were recorded in Southeast Asia, also known as the Pacific Ring of Fire. But the most unexpected and unforgettable tsunamis with massive destruction occurred in the 20th century. Among the three major oceans, only the Pacific Ocean has installed an integrated a multinational tsunami warning system.

Swimming, running through the road, and driving a car pays very little chance of surviving. Whether you like it or not, tsunamis can occur any time and here are the top 10 most interesting facts about it that you should know. First was the tsunami that hit Thailand in 2004 after an earthquake in the Indian Ocean, and second was the tsunami that almost washed out the south boarders of Japan in 2011. The smallest tsunami recorded was a 9-inch wave at the capital of Port Vila which occurred after a 7.5 magnitude earthquake in August 2010. The latest known storm surge occurred in the Southeast Asia together with Hurricane Haiyan. They are less harmful and destructive, and are relatively small compared to open sea tsunamis.
It sends a signal on the screens of the National Oceanic and Atmospheric Administration if a tsunami is coming. According to World Bank, it would take 5 years and cost as much as $232 billion to rebuild a city that is struck by a tsunami.
In Sendai Japan, the government has decided to build massive walls around its coastline to block future tsunamis.
It has to take place under water in order to qualify as tsunami and the magnitude must be greater than 6.75 on Richter scale. This level of energy release was comparable to 26.3 megatons of TNT, over 1,502 times the energy released by the Hiroshima atomic bomb.
However, occurring tsunamis can only be detected some couple of minutes before its occurrence. Tsunamis for most part take place in the Pacific Ocean and coastal areas.Tsunami Facts for KidsIs it possible to Detect Tsunami before it hits?With the advancement in modern technology one would expect that ita€™s possible but still it is extremely difficult to detect the coming of huge death waves until when it comes. Do not forget that even a simple earthquake is least likely to be detected even though devices like seismographs are used to serve the purpose.What does Tsunami Mean?Tsunami is a Japanese word which means a€?harbor wavea€?. You can say that it is an abnormal behavior of waves rising above 100 feet.How High the Tsunami is?The height of the waves caused by tsunami goes up to 100 feet but the average height is rarely above 40 to 50 feet as it depends on how shallow the water is.

Messina TsunamiThe Messina earthquake of 1908 triggered a large tsunami 12 metres high that levelled entire buildings and killed more than 70,000 people in Sicily and southern Italy. Under shallow waters, the height is greater.At what Speed Tsunami waves move?The tsunami moves at the speed of 200 to 600 miles per hour at the deepest point of water. The Valdivia earthquake TsunamiThe Valdivia earthquake of 1960 caused one of the most damaging tsunamis of the 20th Century. In fact tsunami is a gigantic wave of water that looks like a big wall constantly rising like a flood.How Tsunami forms? Measuring 9.5 on the Richter scale, the earthquake caused waves up to 25 metres to assault the Chilean coast.
As it turns out the waves created by the push travel fast to the coast and on the way they become bigger.
Lituya Bay TsunamiAfter an earthquake caused a landslide at the head of Lituya Bay, Alaska, in July 1958, a massive tsunami was generated measuring over 524 metres in height, taller than the Empire State Building. Finally on reaching the shore, these gigantic waves smash against the coast and flood the land.Which Country is at a Greatest risk for Tsunami?Hawaii is most likely to be under the greatest threat of tsunami than any other country.
Amazingly, despite the awesome height of the tsunami, only two fishermen operating in the bay were killed by it.
Often do they come across once a year though the intensity is not so great.When did the First Tsunami take place and how many people killed?The first tsunami had occurred way back in Nov. 1, 1755 in the waters of Portugal and it claimed 60,000 lives.When was the Deadliest Tsunami occurred?The deadliest tsunami occurred in the human history was in December 26, 2004 as it killed 227,898 people. The height of the wave is primarily determined by the distance between the floor from the surface of water; the lesser the distance the greater the height.

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