tsunami
The tsunami (tsunami, Tsunami) is caused by factors except the weather such as a landslide to happen in the earthquake (with the plate) in the sea area and a seaside, the activity of the submarine volcano, the landslide of the bottom of the sea, the fall of the meteorite to the ocean, and it is high waves with the possibility it arrives at the shoreline, and to give the damage to.
It is wide, and tradition that it include the foreign countries, and "the tsunami comes from a dilatational wave" spreads out, but I do not come from a dilatational wave by all means, and it is misunderstanding.
"The tsunami" became the international language as a technical term widely, but, with that a tsunami by the Sumatra offing Earthquake brought the tough damage having been reported all over the world, it was it for a language of public by the language of each country at a stretch.
The physical property of the tsunami is different from the regular ebb and flow such as a heavy seas and the astronomy tide namely ebb tide / the high tide.
In the following, I mention the many characteristics of the tsunami.
As for the most general thing, the most of tsunamis staying for the record by an earthquake to be generated in the bottom of the sea depend on this as origin of the tsunamis.
When a gap of the dislocation reaches the bottom of the sea, and the bottom of the sea side changes up and down when dislocation is active, and an earthquake occurred, it is moved by seawater top and bottom, and the topography change just appears on the surface of the sea, and it is it with undulation, and the change of the water level enlarges it to circumference, and it is a tsunami.
By the sedimentation of the bottom of the sea by the normal fault, the tsunami is generated by the upheaval by the reverse fault.
Because length of the dislocation can be more than 100 kilometers, and the topography change with it becomes a wide area by the earthquake of the eighth grade magnitude, wide seawater moves and wakes up a large-scale tsunami.
Originally it is important that the topography of the bottom of the sea turns big for the outbreak of the tsunami, and it may be said that the dislocation of the bottom of the sea by the big earthquake and an upheaval by it and the sedimentation are the phenomena that are easy to wake up a tsunami most (even if, on the contrary, there is the dislocation exercise of the bottom of the sea, a wide gap excels, and the big tsunami does not occur without an upheaval and sedimentation).
It is easy to understand that the principle pushes up hot water by hand to push it up during bathing from the bottom of the bathtub to the top.
I should open to circumference after the bath pushed up becomes the lump, and happening to the surface of the water, and it is a tsunami that this became huge.
There is the case that is attacked in the area that did not feel an earthquake by a tsunami the seismic sea wave is large, and to come to the distant place.
This is called a distant place tsunami.
Because there is time to the arrival of the tsunami, it is easy to take refuge, and the human damage prevention is easy, but it is it in form to receive a surprise unless the transmission system of the information is set, and the damage grows big.
There are the examples such as Hawaii by a thing of a dust seismic sea wave of 1960 or the Indian Ocean coast countries in the case of the Sumatra offing earthquake of Japanese 2004.
In addition, there is the earthquake that "a slow slip" or the speed of the change of the bottom of the sea called "tsunami Earthquake" is slow.
Because only comparatively small rolling (earthquake vibration) occurs, it seems to be a small earthquake, but an unexpected massive tsunami occurs in, in fact, the total energy is big, and the change of the bottom of the sea side is large, and a range being wide when I have a look at it, and there is a thing bringing the big damage.
It had been done with magnitude 7.6 about the earthquake that Meiji Sanriku offing seismic sea wave of 1896 caused it in the example in a for a long time, but I considered the size of the tsunami afterwards, and it was checked to magnitude 8.25.
When a large quantity of earth and sand and rocks surged into the sea by the mountain body collapse that happened at the place that is near to the shoreline, a tsunami occurs.
The scale is much smaller, but it is said that the tsunami of the cause and a massive tsunami as I stand comparison can occur, and an earthquake mainly causes the damage depending on the situation in comparison with the seismic sea wave very much when I contact with the outbreak spot again, and there is an a population of crowd zone.
The tsunamis which started a victim from 700 to 1,000 in Indonesia in tsunami and 1979 of the Ariake sea in 1792 when 15,000 people called "Shimabara great Higo nuisance" were sacrificed are the examples.
By the explosion of the Indonesian Krakatou volcano of 1883, a large quantity of pyroclastic flow flows into the sea, and a tsunami is generated, and it is said that 36,000 died.
In addition, in the mountains, mountain body collapse occurs by origin equally in the wetlands such as dam lakes.
In Italian a tsunami of 100m is generated by a landslide, and more than 2,000 really die.
There is the tsunami due to the submarine volcano, too, but it is not a big tsunami only by explosion activity without a big change in the topography of the bottom of the sea.
In addition, even if there is a change of the seafloor topography, the wave source of the tsunami shrinks if the range is small, and the tsunamis which occurred disperse immediately.
Even if it faces activity of of 1952, it is the degree that a small tsunami was observed in Hachijo-jima Island.
There is the opinion to deny in an expert whether the landslide that occurred in the bottom of the sea causes a tsunami, and the example of a tsunami considered to be sure has few that I really had it by bottom of the sea landslide again.
It is wide, and tradition that it include the foreign countries, and "the tsunami comes from a dilatational wave" spreads out, but I do not come from a dilatational wave by all means, and it is misunderstanding.
"The tsunami" became the international language as a technical term widely, but, with that a tsunami by the Sumatra offing Earthquake brought the tough damage having been reported all over the world, it was it for a language of public by the language of each country at a stretch.
The physical property of the tsunami is different from the regular ebb and flow such as a heavy seas and the astronomy tide namely ebb tide / the high tide.
In the following, I mention the many characteristics of the tsunami.
As for the most general thing, the most of tsunamis staying for the record by an earthquake to be generated in the bottom of the sea depend on this as origin of the tsunamis.
When a gap of the dislocation reaches the bottom of the sea, and the bottom of the sea side changes up and down when dislocation is active, and an earthquake occurred, it is moved by seawater top and bottom, and the topography change just appears on the surface of the sea, and it is it with undulation, and the change of the water level enlarges it to circumference, and it is a tsunami.
By the sedimentation of the bottom of the sea by the normal fault, the tsunami is generated by the upheaval by the reverse fault.
Because length of the dislocation can be more than 100 kilometers, and the topography change with it becomes a wide area by the earthquake of the eighth grade magnitude, wide seawater moves and wakes up a large-scale tsunami.
Originally it is important that the topography of the bottom of the sea turns big for the outbreak of the tsunami, and it may be said that the dislocation of the bottom of the sea by the big earthquake and an upheaval by it and the sedimentation are the phenomena that are easy to wake up a tsunami most (even if, on the contrary, there is the dislocation exercise of the bottom of the sea, a wide gap excels, and the big tsunami does not occur without an upheaval and sedimentation).
It is easy to understand that the principle pushes up hot water by hand to push it up during bathing from the bottom of the bathtub to the top.
I should open to circumference after the bath pushed up becomes the lump, and happening to the surface of the water, and it is a tsunami that this became huge.
There is the case that is attacked in the area that did not feel an earthquake by a tsunami the seismic sea wave is large, and to come to the distant place.
This is called a distant place tsunami.
Because there is time to the arrival of the tsunami, it is easy to take refuge, and the human damage prevention is easy, but it is it in form to receive a surprise unless the transmission system of the information is set, and the damage grows big.
There are the examples such as Hawaii by a thing of a dust seismic sea wave of 1960 or the Indian Ocean coast countries in the case of the Sumatra offing earthquake of Japanese 2004.
In addition, there is the earthquake that "a slow slip" or the speed of the change of the bottom of the sea called "tsunami Earthquake" is slow.
Because only comparatively small rolling (earthquake vibration) occurs, it seems to be a small earthquake, but an unexpected massive tsunami occurs in, in fact, the total energy is big, and the change of the bottom of the sea side is large, and a range being wide when I have a look at it, and there is a thing bringing the big damage.
It had been done with magnitude 7.6 about the earthquake that Meiji Sanriku offing seismic sea wave of 1896 caused it in the example in a for a long time, but I considered the size of the tsunami afterwards, and it was checked to magnitude 8.25.
When a large quantity of earth and sand and rocks surged into the sea by the mountain body collapse that happened at the place that is near to the shoreline, a tsunami occurs.
The scale is much smaller, but it is said that the tsunami of the cause and a massive tsunami as I stand comparison can occur, and an earthquake mainly causes the damage depending on the situation in comparison with the seismic sea wave very much when I contact with the outbreak spot again, and there is an a population of crowd zone.
The tsunamis which started a victim from 700 to 1,000 in Indonesia in tsunami and 1979 of the Ariake sea in 1792 when 15,000 people called "Shimabara great Higo nuisance" were sacrificed are the examples.
By the explosion of the Indonesian Krakatou volcano of 1883, a large quantity of pyroclastic flow flows into the sea, and a tsunami is generated, and it is said that 36,000 died.
In addition, in the mountains, mountain body collapse occurs by origin equally in the wetlands such as dam lakes.
In Italian a tsunami of 100m is generated by a landslide, and more than 2,000 really die.
There is the tsunami due to the submarine volcano, too, but it is not a big tsunami only by explosion activity without a big change in the topography of the bottom of the sea.
In addition, even if there is a change of the seafloor topography, the wave source of the tsunami shrinks if the range is small, and the tsunamis which occurred disperse immediately.
Even if it faces activity of of 1952, it is the degree that a small tsunami was observed in Hachijo-jima Island.
There is the opinion to deny in an expert whether the landslide that occurred in the bottom of the sea causes a tsunami, and the example of a tsunami considered to be sure has few that I really had it by bottom of the sea landslide again.