Tsunami

Is a natural phenomenon made up of a series of high-animated waves
Quickly landward, taking with it everything that stands in its way
The word tsunami origin consisting of two words "tsu," meaning harbor, and "nami" meaning wave with time became the use of this term,
And it is said to have appeared for the first time the return of some Japanese fishermen from the sea, only to find that all that was left in the harbor had been completely destroyed
Due to a strong high waves, although they did not feel anything when they were at sea

Causes
A tsunami can result from any disorder because of the fast removal of a large amount of water in the depth of these disorders Searmen mention earthquakes, volcanic eruptions, landslides
Or the fall of the meteorite with a medium or large sizes in the ocean, but most of these reasons is the earthquake that causes deviations below the ground water.
When an earthquake occurs, the ocean or the sea floor exposed to deformation, or cracks, or large displacement movement caused a large amount of water that was above
According to well-known scientific base, which says:
"The water when you move it will return to its natural position previously too fast under the influence of gravity
It will move producing strong high waves, but is found in the vicinity of the land has been sinking entire cities in a very short time. "

Symptoms occur
Just before the arrival of the waves can be observed the following:
- A sense of tremor ground.
- Some gases from seawater could get out in the form of bubbles.
- A person may feel in the water warm water that suddenly increases and concretely.
- Heard a similar sound to the sound of thunder.
- Stand out from the smell of the water is very unpleasant.
- Beach water back down towards the rear dramatically.

Some of the reasons for its occurrence
It could be the main reasons summarized as follows:
First - the esoteric latent heat factor in the ground.
Second - contractions of the earth's crust springs to shrink the fiery fluid and its expansion.
Third - temperature increases the more we are constantly in the ground and closer to the esoteric material called (Magma) and is responsible for the occurrence of earthquakes and volcanoes when it expands.
Fourth - sprawled under the esoteric material resulting from the ongoing chemical reactions the effect of heat in the nucleus of the earth.
Fifth - the electrical waves that surround the Earth.
Sixth - waves of electrical and chemical interactions relationship.
Seventh - radioactive material (Radeoactive) in the ground, and the enormous nuclear energy emitted by the crash of the atoms in the uranium and Altheoriom.
Eighth - The presence of trapped gases inside the Earth and reheated also help in earthquakes

Tsunami strikes throughout history

- 1650 BC: the Volcano "Santorini" revolution resulted in Omuja was estimated to rise by discovered between 100 and 150 meters of documents,
And it is the cause of the destruction of the northern shore of the island of Crete Located just 70 kilometers from the volcano island.

- 1700 AD: In the twenty-sixth of January, and as a result of an earthquake called the Cascadia tsunami hit a huge Japanese site and some American coasts.

- 1755 AD: Tens of thousands of people who survived the great Lisbon earthquake, died tsunami that followed the quake, after about half an hour, and as much as the victims of the incidents 100,000 people.

- 1883 AD: signed Japanese island of Krakatoa volcano victim of a revolution led to the emergence of the tsunami waves had risen to 40 meters above sea level.

- 1896 AD: tsunami 20 meters and caused the destruction of the village of San Rico Japanese entirety, and an estimated 26,000 people to the victims.

- 1876 AD: On August 26, tsunami caused the deaths of 5,000 people in the Moro Gulf of Philippine.

- 1960 AD: After the great Chilean earthquake, which reached a magnitude 9.5 on the Richter scale under the water along the southern shores of Chile
Tsunami appeared 25 meters and caused the deaths of 1,000 to 2,200 people, and when I got the waves to the shores of Onagawa in Japan was the height of 3 meters above sea level.

- 1993 AD: tsunami attacked the coast of Japan's Hokkaido, causing significant destruction and the death of 200 people in addition to those who lost or Osiepoa.

- 2004 AD: the Indian Ocean tsunami, after the Indian Ocean earthquake, which reached a magnitude to 9.2 on the Richter scale in the August 26 tsunami, which caused the deaths of 310,000 people appeared
Making it the worst incident in history at all, and the tsunami occurred in the areas surrounding the status of a quake, Indonesia, Thailand, Malaysia, and reached a distance to the shores of Bangladesh, India, and Saralanka.

These earthquakes and tsunami last was Japan
Where Japan saw on Friday, 11.03.2011 tsunami severely as a result of the earthquake that hit Japan strongly 8.9 Richter, which led to the tsunami waves reached the ten meters
And it swept the coasts of the country to the Pacific Ocean and washed away cars and Sva.ozbpt so far the deaths of more than nine thousand people.

Japan tsunami impact on the ground.

Confirmed the Italian Institute of Geophysics and Volcanology studies that the earthquake that hit Japan
It has seemed to shift Earth's axis of rotation of ten centimeters.
Experts estimate that the coast of Japan moved from its eastward
A distance of 4 meters (13 feet) in the wake of Friday's earthquake of 8.9 degrees strongly.
According to data collected from geological monitoring network in Japan
Which includes the 1200 monitoring geographic locations "GPS" station that there is a process of displacement occurred in the aftermath of the massive earthquake.
Dr. Roger Masson from the British Geological Survey Association
That the movement that followed the earthquake, "consistent with what happens when an earthquake of this magnitude is."
It is believed that the earthquake caused the ground to move about its axis by about 6.5 inches (16.5 cm)
And make the globe spin a little faster means Palace today by 1.8 million from the second.
It suggested the Japanese Meteorological Agency adjusted upward to the strength of the earthquake of 9 degrees
This makes it the fifth largest earthquake since the process began recording earthquakes
He explained Dr. Brian Baptaa from the British Geological Survey also Association
The quake struck in the area of ​​the confluence of two different plates Tktunian
Two plate Pacific plate east and other west considers Kther Aljiulgiyn extension of the North American plate.
The Pacific plate is moving westward under Japan and with the movement attract with the American plate
To the bottom and towards the west, according to the stated location, "the BBC" ..
With the earthquake pushed the upper plate to the east and to the top of an absolute pressure that brings the friction plates to each other.
This pressure on the sea floor and hits the engine of a large amount of water is what the tsunami waves that devastated coastal areas in the Sendai region.
Says Dr. McEwen "Pacific plate moved up to a maximum of 20 meters to the west, but the volume of traffic varies from one position to another even on the same fault line."
He adds: "This does not mean that all of Japan moved from its place equally because the amount of offset of at least whenever you depart from the rift."
And keep track of geological monitoring network Japanese Geographic Survey Institute
Work began in 1993 and has now become the largest network to identify geographic locations in the world.
According to statements to the coasts of Japan move by 4 meters to the east.
For her part, Dr. hadnt from the US Geological Survey in Pasadena, Calif confirmed
It will have to be modified to identify the geographic location information "GPS" to read maps relating to trends in automotive and real estate records as a result of the leadership of this offset.
She added: "real estate boundaries changed, and you will need boatmen lists for ships to change due to the different depth of the water."
He Antonio Bersanta director of research at the institute, noted that preliminary results as the studies done by the institute emphasizes that the earthquake has led to what seems to shift the Earth's rotation axis around ten centimeters,
He explained that this movement is much larger than those recorded after the quake, which struck the island of Sumatra in 2004 and comes second after the earthquake that struck Chile in 1960.