what causes a earthquake

What Causes A Earthquake?

Lists below might Describe Them All! Many people might have experience an earthquake for at least once in their life, however, not all might wonder what causes a earthquake? An earthquake is a sudden shaking of the earth’s layer which sometimes may cause great damage as a result of the movement within the earth volcanic action or earth’s crust. Our earth especially the plates are constantly moving, and earthquake may happen when there is a big pressure and where the plates are forced under another such as the earthquake happened in sumatera and California several years ago. Some parts of the world have higher chance to experience more earthquake than others with as much as 80% taking place around the pacific plate edges including Papua New Guinea, New Zealand, South America, Japan, USA and Canada. a very big earthquake can be followed by a series of aftershocks which may last for some months. To learn more about earthquake, you can read below description about what causes an earthquake?

what causes a earthquake

What causes an earthquake?

 An earthquake usually occurs in the border of earth’s plaque. And severe earthquake is usually occur in the border of compressional and translational plaque. The vibration of earthquake can travel very fast, up to 14 km/s whilst the seismic waves follows after may take less than 20 minutes  to reach other parts of the earth with a distance nearly touched 13.000km.

Natural factors

  • Volcanic earthquake

Several earthquakes happen due to the movement of magma in the volcano. This kind of earthquake occurs as a result of volcanic and magma activities which are usually occur before the eruption of volcano. When the activity is gradually increasing, then, it will cause an explosion which can also cause earthquake. Generally, this earthquake will occur surrounding the volcano areas only.

  • Tectonic earthquake

This kind of earthquake occurs as a result of tectonic activity such as the sudden movement of earth’s outer layer and the strength of the earthquake are ranging from the very small up to very high scale. This kind of earthquake might cause a lot of damage and the vibration can be felt into the whole parts of the world.

  • Massive water accumulation

In addition, earthquake may also occur as a result of water accumulation in a big mass in the dam like what happened in Karibia, Zambia, Africa.

  • Liquid injection

While some other earthquake might occur as a result of liquid injection from and to the earth like what happened in rocky mountain arsenal and some geothermal power plants

Human factors

  • Explosives

Differ from other factors what causes a earthquake, this kind of earthquake occurs as a result of human action. This action is usually taken when researchers conduct secret nuclear weapons done by the government.

Those are all about some factors behind an earthquake. Some factors might happen due to natural causes whilst some others might happen due to human factors. However, after knowing all factors what causes an earthquake above, human can take some preventive action to minimize the impact of the earthquake.

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