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Founder and Chief Editor of Facts Legend, Sankalan believes that information should be free. May 21, 2013 by admin A tsunami is displacement of  substantial volume of water causing "walls of water"  in the ocean that reach heights of 100 feet (30 meters) and can span hundreds of miles across. As early as 426 BC the Greek historian Thucydides inquired in his book History of the Peloponnesian War about the causes of tsunami, and was the first to argue that ocean earthquakes must be the cause. Approximately 99% of all fatalities have occurred within 160 miles (250 km) of the tsunami’s origin or within 30 minutes of when the tsunami was generated.
Tsunami waves do not look like normal waves because they do not break and curl as normal waves do.
The people who live in a country located in the Ring of Fire in Pacific Ocean should be aware with Tsunami.  More than 80 percent of Tsunami occurs on the location.
Some people might not aware that tsunami is going to come.  This condition occurs because the first wave of tsunami is not strong and big.
You are wrong by thinking that the only place in the world that can be swept by tsunami is located in Japan.
Hawaii is considered as the most dangerous states in US which can be affected and swept by Tsunami.  It was on 1 April 1946 that the greatest Tsunami in Hawaii occurred.
Indian Ocean tsunami is very famous because it killed more than 283,000 people in 11 countries in the world.
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Tsunami is a series of huge water waves caused by an earthquake or volcano eruption under the sea or a landslide or meteoroid impact or any kind of underwater explosion.
The first fact in these interesting tsunami facts is about the 2004 tsunami in Indian Ocean. Most of the causalities occur around the 250 miles radius of the tsunami centre and usually within 30 minutes. This is one of the most interesting tsunami facts about the tsunami due to meteorite showers. In this interesting list of tsunami facts, this fact is about the unbelievable speed of tsunami waves. On March 11, 2011, a magnitude-9 earthquake shook northeastern Japan, unleashing a savage tsunami. The total damages from the earthquake and tsunami are estimated at $300 billion dollars (about 25 trillion yen), according to the Japanese government. Scientists drilled into the subduction zone soon after the earthquake and discovered a thin, slippery clay layer lining the fault. Residents of Tokyo received a minute of warning before the strong shaking hit the city, thanks to Japan's earthquake early warning system.
Less than an hour after the earthquake, the first of many tsunami waves hit Japan's coastline. The tsunami caused a cooling system failure at the Fukushima Daiichi Nuclear Power Plant, which resulted in a level-7 nuclear meltdown and release of radioactive materials.
The surge of water carried an estimated five million tons of debris out to sea, the National Oceanic and Atmospheric Agency has reported. The earthquake shifted Earth on its axis of rotation by redistributing mass, like putting a dent in a spinning top. More than 5,000 aftershocks hit Japan in the year after the earthquake, the largest a magnitude 7.9. In Norway, water in fjords pointing toward Japan sloshed back and forth as seismic waves from the earthquake raced through.
The earthquake produced a low-frequency rumble called infrasound, which traveled into space and was detected by the Goce satellite.
Buildings destroyed by the tsunami released thousands of tons of ozone-destroying chemicals and greenhouse gases into the air.
Becky Oskin covers earth science, climate change and space, as well as general science topics. 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.
Usually an earthquake is responsible for a Tsunami however, it can also be caused rapid and erratic changes in atmospheric pressure and even by volcanic eruptions. Apart from volcanoes, earthquakes and changes in atmospheric pressure, tsunamis can also be caused by meteor impact on oceans. Nearly 99% of tsunami fatalities take place within 160 miles from the point of tsunami origin.

When a heavier tectonic plate moves underneath a lighter plate, the entire water column right above the subduction zone is displaced and causes tsunami. The idea that tsunamis are caused by underwater earthquakes was first proposed by Thucydides in his book, 'History of the Peloponnesian War'. When these "walls of water hit" coastal lands, massive damage often occurs satellite images. While Japan may have the longest recorded history of tsunamis, the sheer destruction caused by the Indian Ocean earthquake and tsunami 2004 event mark it as the most devastating of its kind in modern times, killing around 230,000 people. The above video taken during the Japanese tsunami demonstrates the power of "wall of water" and the massive destruction it caused. Consequently, anyone in a coastal area who feels a strong earthquake should take that as a natural warning that a tsunami may be imminent and leave low-lying coastal areas. They come as rapid floods of water or in the form of a bore, which is a large, steep wave that looks like a wall of water. The series of tsunami waves is also known as wave train and the time between any two waves can range between a few minutes and couple of hours. In 2004 the energy release in 9.0 earthquake of Indonesia was more than the combined energy release of the earthquakes of past 25 years on our earth. At the coastal areas if people feel earthquake they should consider it a warning for potential tsunami waves and get moved towards some higher region. The tsunami waves can travel with a speed of 600 miles per hour which is equivalent to the speed of a jet plane. More than 9,000 tourists from all over the world were also among this large number of casualities. This is an aerial view of damage to Sukuiso, Japan, a week after the earthquake and subsequent tsunami devastated the area in March, 2011. Radioactive water was recently discovered leaking from the Fukushima Daiichi Nuclear Power Plant, which suffered a level 7 nuclear meltdown after the tsunami. That record goes to the 2004 Banda Aceh earthquake and tsunami in Sumatra, a magnitude-9.1, which killed more than 230,000 people.
In a subduction zone, one plate slides beneath another into the mantle, the hotter layer beneath the crust. The country's stringent seismic building codes and early warning system prevented many deaths from the earthquake, by stopping high-speed trains and factory assembly lines.
The tsunami waves reached run-up heights (how far the wave surges inland above sea level) of up to 128 feet (39 meters) at Miyako city and traveled inland as far as 6 miles (10 km) in Sendai.
The electrical power and backup generators were overwhelmed by the tsunami, and the plant lost its cooling capabilities. Researchers sailed offshore and dropped sensors along the fault line to measure the forces that caused the earthquake. In Chile, some 11,000 miles (17,000 km) distant, the tsunami was 6.6 feet (2 meters) high when they reached the shore, according to the Pacific Tsunami Warning Center. Becky was a science reporter at Live Science and The Pasadena Star-News; she has freelanced for New Scientist and the American Institute of Physics. Unlike the volcanoes where fire, heat, magma and volcanic ash causes destruction, Tsunamis unleash the wrath of water.
Damage is usually contained within 250 km or 160 miles from the point of origin of a tsunami. Meteor impacts can lead to some of the most deadliest tsunamis with waves as high as 100 feet.
However, those deep ocean tsunami waves are usually 1-3 feet tall and usually go unnoticed. Sometimes he gets really confused about things happening in life but then again, he manages to get things back on track.
This amazing video taken from a helicopter and reported by Sky News demonstrates the power of Tsunami that hit Japan.
An area of seafloor more than the total area of California State got dislocated and moved about 30 feet upward.
But according to some scientists, almost 3.5 billion years ago there was a huge meteorite strike which created a tsunami so big that it wiped out all the life from the earth.
Japan relies on nuclear power, and many of the country's nuclear reactors remain closed because of stricter seismic safety standards since the earthquake. But Japan's one-two punch proved especially devastating for the earthquake-savvy country, because few scientists had predicted the country would experience such a large earthquake and tsunami. The great plates are rough and stick together, building up energy that is released as earthquakes.
People in Japan also received texted alerts of the earthquake and tsunami warnings on their cellphones.

The tsunami flooded an estimated area of approximately 217 square miles (561 square kilometers) in Japan. In July 2013, TEPCO, the Tokyo Electric Power Company, admitted that about 300 tons of radioactive water continues to leak from the plant every day into the Pacific Ocean. In some regions, such as Miyagi and Fukushima, only 58 percent of people headed for higher ground immediately after the earthquake, according to a Japanese government study published in August 2011.
Teams studied the tsunami deposits to better understand ancient sediment records of the deadly waves. 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. It is this wave train that causes repeated destruction, making tsunamis extremely dangerous.
First is when two tectonic plates either slide against each other or split apart and the second one is when a lighter tectonic plate is forced above a heavier tectonic plate. Regular waves are caused by wind pushing water at the surface of the ocean or other body of water. Yes, it is true that Japanese island is often swept by tsunami.  Read the following facts to know more about Tsunami.
The 5th or 6th waves are the strongest ones having the capability of demolition over a wide area. There is another theory about tsunami caused by an asteroid 4800 years ago in Indian Ocean which raised huge 180 meters high tsunami waves.
It was centered on the seafloor 45 miles (72 kilometers) east of Tohoku, at a depth of 15 miles (24 km) below the surface.
Many people also underestimated their personal risk, or assumed the tsunami would be as small as ones they had previously experienced, the study found. Earthquake engineers examined the damage, looking for ways to build buildings more resistant to quakes and tsunamis.
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. Today, let us learn 47 interesting tsunami facts and understand how they work and what they are capable of. If an earthquake is felt in a coastal area, it should be taken as a sign of incoming tsunami.
The zone where this second type of tectonic plates movement takes place is known as subduction zone. In the decade before the 2011 Tohoku earthquake, a handful of Japanese geologists had begun to recognize that a large earthquake and tsunami had struck the northern Honshu region in 869. Coast Guard fired on and sank the derelict boat 164-foot Ryou-Un Maru in 2012 in the Gulf of Alaska. 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€?. The first person who related tsunami to earthquake was a Greek historian Thucydides who mentioned this discovery in his book ‘History of the Peloponnesian War’. Now, tsunami experts from around the world have been asked to assess the history of past tsunamis in Japan, to better predict the country's future earthquake risk.
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.
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.
In fact tsunami is a gigantic wave of water that looks like a big wall constantly rising like a flood.How Tsunami forms?
As it turns out the waves created by the push travel fast to the coast and on the way they become bigger. 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.
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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