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Why does tsunami do not always occur even when there is an earthquake?
Wiki User
∙ 9y ago
The creation of a tsunami depends on several factors:
- magnitude - generally needs to be 7 or higher
- earthquake must be located under the ocean so that water is moved
- type of fault movement. When plates move up or down, this tends to move the most water, and is most likely to produce a tsunami
Wiki User
∙ 9y ago
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Why tsunami do not always occur even there is an earthquake?
The creation of a tsunami depends on several factors:magnitude - generally needs to be 7 or higherearthquake must be located under the ocean so that water is movedtype of fault movement. When plates move up or down, this tends to move the most water, and is most likely to produce a tsunami
Would an earthquake be considered a natural hazard where there are no people?
Earthquakes usually cannot knock over trees, even if they would level buildings. In a natural area, the worst an earthquake would cause is a landslide. The exception would be an underwater earthquake that caused a tsunami, because tsunamis can cause a lot of damage, even in the wild.
How strong does an earthquake have to be to cause a tsunami?
It varies. The size of the quake is only one factor. Others are the shape of the sea floor between the quake and the land, the distance from the shore, the depth, and a dozen other things.New Answer: All of the above is very true, but many seismologists believe an earthquake of at least 6.0 magnitude is required to generate a tsunami, but of course not all earthquakes above this magnitude will generate a tsunami, even if they occur under the ocean. However, it is mainly a factor of the amount of displacement in the ocean crust as a result of the earthquake, rather than the amount of energy is released by it, as this is what causes the tsunami wave.New Answer 2: Seafloor movement is only one means in which an earthquake can generate a tsunami; a relatively minor earthquake (or even no earthquake) can trigger a massive landslide on a steep, already-teetering slope, and the tallest recorded tsunami in history were generated by landslides (such as the wave caused by the landslide triggered by the May 18, 1980 eruption of Mount St. Helens into Spirit Lake, estimated to have triggered a wave that reached some 1,500 feet in height; a similar tsunami at over 1,700 feet was triggered by a landslide not even associated with an earthquake nor volcano in Alaska on July 9, 1958. A tsunami could also be generated by a meteor striking the ocean or a lake.
When and where do tsunamis occur?
A tsunami happens in an area where there is earthquake activity. Most tsunamis occur from undersea earthquakes. The large waves of the tsunami are generated by the abrupt movement of the ocean floor.
What caused the 7.7 magnitude earthquake that sent a tsunami more than 10 feet high into Indonesia in October 2010?
well im not sure what specifically caused this particular tsunami, but generally tsunamis occur because of plates moving on the earths surface below the ocean. plates often slide apart, close together, and they even slide right into eachother. this a causes huge waves forming tsunamis.
Why does tsunami occur after an earthquake?
A tsunami cannot be precisely predicted even if the right magnitude of an earthquake occurs in the right location. Systems that uses bottom pressure sensors attached to buoys can successfully predict a tsunami. No one yet knows why a tsunami may or may not occur after an earthquake. It is not necessary that a Tsunami follows an earthquake. It only happens when focus of earthquake is in the sea bed. Since earthquakes are caused by seismic waves produced due to collisions of the tectonic plates, these waves high disturbance in the sea water and hence the water takes the form of Tsunamis.
Why tsunami do not always occur even there is an earthquake?
The creation of a tsunami depends on several factors:magnitude - generally needs to be 7 or higherearthquake must be located under the ocean so that water is movedtype of fault movement. When plates move up or down, this tends to move the most water, and is most likely to produce a tsunami
Why tsunami do not always occur even when there is an earthquake?
The creation of a tsunami depends on several factors:magnitude - generally needs to be 7 or higherearthquake must be located under the ocean so that water is movedtype of fault movement. When plates move up or down, this tends to move the most water, and is most likely to produce a tsunami
What are little waves are called as?
A small wave, or miniature tsunami, is called a seiche. It can occur in lakes, dams and even pools, and is caused by earthquake tremors.
Who can be affected by an earthquake?
Anyone can; even people continents away can be affected by really strong earthquakes. Japan had an earthquake and a tsunami that caused a tsunami in Hawaii.
Does this make sense The Tsunami was even worse than the earthquake?
yes, but tsunami isn't a pronoun, so lowercase it.
Can you feel and earthquake while boating?
yes, even on a lake there may be a tsunami wave
What meterial holds up in an10.5 earthquake?
We don't know what material holds up in an 10.5 earthquake. It's not has been tested yet. But it maybe possible that the building structures survived a 8.0 earthquake could work in the 10.5 earthquake. But it looks impossible because a 10.5 earthquake is a super strong quake and if it last more then 5 min, bulidings would collpase. If it were to occur in the ocean. It will generate a destructive tsunami. The tsunami can grow even bigger if the earthquake were to cause a massive landslide.
Should you expect earthquakes and tsunami?
Earthquakes are pretty common; there are dozens of small to medium quakes every day, and a fairly large one every month or so. If an earthquake happens at sea, along a coastline, it's possible that the earthquake will cause an underwater avalanche, and if there is, the falling rock and mud will displace a lot of water - and cause a tsunami. You won't always have a tsunami, even with fairly big quakes, but it's always something to be aware of.
Is nz 2010 earthquake finished?
No not quite aftershocks can even occur for a couple of days after the main earthquake.
What was the earthquake and tsunami rated in japan 2011?
The earthquake in Japan was a 9.0 magnitude earthquake. (After the quake hit, seismologists ranked it from an 8.9 to a 9.0.) The tsunami's height was recorded to be about 33 feet. Many counts say that the number is much higher, even as high as a 3-4 story building.
Are earthquakes environmental issues?
No, they occur naturally. They are considered natural disasters. They can cause an issue when they occur however, and even cause a tsunami.
