วันอาทิตย์ที่ 3 กรกฎาคม พ.ศ. 2554

What is a tsunami and what causes it?

What is a tsunami and what causes it?

A series of large ocean waves caused by sudden underwater disruptions produced to move a large amount of water mass from its rest position, known as a tsunami. Tsunamis usually occur in the oceans and seas, but also occur in large lakes as well. Is not only a tsunami wave, but the so-called "wave train" - a series of waves, as long as 60 miles, maybe that sounds like a freight train can be.

Tsunamis are usually caused by massive changes to the seabed.Earthquakes, volcanic eruptions, landslides, explosions, water, nuclear testing and, more rarely, the impact of cosmic bodies such as meteorites or asteroids that no adverse effect on or under the seabed, have the potential to generate a tsunami. This usually happens when the sea floor abruptly deforms. The water above the deformed area is displaced from equilibrium and may cause the sea to rise vertically up to 100 feet (30 meters). Tectonic earthquakes are a typicalKind of underwater disturbance, the overlying water mass, which tends under the influence of gravity displaced equilibrium. This unexpected movement of water creates a series of powerful waves. Subduction earthquakes have vertical movements of the earth's crust along plate boundaries and oceanic plates slip under continental plates can also trigger a tsunami. Large earthquakes are often caused by underwater landslides, which interfere with the overlap of the water, and followed.Tsunamis can be created by undersea volcanic constructions also by volcanic eruptions and collapses. Underwater nuclear tests can trigger tsunamis, but they can cause underground tests as well. In contrast to these disturbing, super-marine landslides and cosmic bodies impact the water from above. However, the tsunami generated in this way dissipate quickly and rarely affect coastlines distant from the region of origin.

What Is A Tsunami

Tsunami is generated in the depths of the ocean often go unnoticed onSurface. You can add a whole ocean in a single day at speeds up to 500 mph pass (800 kph), without much energy. Once a tsunami reaches the shore, its power is devastating. The tsunami in the Indian Ocean in 2004 will have a destructive force of 23,000 atomic bombs. However, the first wave are not the most dangerous. Trees can be removed for several minutes to an hour of each other and the danger of a tsunami can last for several hours after the arrival of the first wave.




What is a tsunami and what causes it?

ไม่มีความคิดเห็น:

แสดงความคิดเห็น