Earthquakes are vibrations or shocks that occur on the surface of the earth due to the release of energy of seismic waves sudden creation. Earthquakes usually caused by the movement of the crust (ground plate) of the Earth. frequency region, referring to the type and size of earthquakes experienced over a period of time. Earthquakes are measured using a seismometer. Moment magnitude is the most common scale in which earthquakes occur for the whole world. Rickter scale is a scale that is in the report of the National Seismological Observatory to measure the local magnitude scale of magnitude 5. The same scale for their valid ranges. 3 earthquakes of magnitude or more are mostly hardly noticeable and large 7 on the potentially dangerous effects on large areas, depending on the depth of the quake. The most historic magnitude earthquake has over 9, although there is no limit magnitude. The last major earthquake of magnitude 9.0 or greater was magnitude 9.0 earthquake in Japan in 2011 (from March 2011), and was the largest earthquake in Japan since records began. The intensity of the vibration is measured on a modified Mercalli scale. The cause of the occurrence of earthquake
Most earthquakes result from the release of the energy produced by the pressure caused by the earthquakes of the slab in motion. The more pressure that growth and ultimately achieve the situation where the pressure can not be re-arrested on the outskirts of the slab. That's where earthquakes occur. The cause of the occurrence of earthquake.
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Earthquakes usually occur on plate boundaries. The most serious Earthquakes often occur in compression and translational slab border.Earthquake focus on the most likely to occur because the material is compressed in the lithospheric mantle undergoes a phase transition at a depth of 600 km.
Several other earthquakes can also occur due to magma movements inside the volcano. Earthquakes, could be a symptom of an impending volcanic eruption. Several earthquakes (but rare) also occur due to accumulated a huge body of water behind the dam, and the dam of the Caribbean in Zambia, Africa. Some (too rare) may also occur due to the injection of fluid or akstraksi to / from the Earth (ex. In some stations geothermal and Rocky Mountain Arsenal. Finally, earthquakes with explosives Mine may also occur. You can monitor the scientific secrets of nuclear weapons tests conducted by the government. Earthquakes are caused by humans, it is also called induced seismicity.
The cause of the occurrence of earthquake
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