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Based on the causes, earthquakes are scientifically divided into five kinds, namely tectonic earthquakes, vukanik, collisions, ruins, and artificial. The five quakes have different causes. However, earthquakes that often occur in Indonesia are volcanic, tectonic, and terban earthquakes.
Volcanic earthquakes occur due to the eruption of a very powerful volcano. Called volcanic because this earthquake accompanies the eruption of the volcano that is before, at the time, and after the volcano erupted. Usually occurs in areas near the volcano (an active volcano). This earthquake occurs due to increased magma activity. Magma under the crust wants to barge in. This earthquake occurred in the mountain area and surrounding areas only. This type of quake often occurs in Indonesia because Indonesia itself has many active volcanoes. For example the earthquake caused by the eruption of Mount Krakatau in 1883 which killed about 36,000 inhabitants. The vibrations are felt in Africa and Europe. The eruption of Mount Krakatau resulted in a pretty devastating tsunami at that time and menyirnakan form of Krakatoa itself.
Tectonic earthquakes occur due to the shifting of the earth's crust or the fracture caused by the movement of the earth's plates. Earthquakes of this type usually occur in areas or areas that have many seas, such as Indonesia. Our earth that looks solid in the inside was not. The earth is composed of several layers. According to the Theory of the tectonic plate, the earth is composed of several layers of rock, where there is a layer that most of the area floats like snow. The layer moves slowly and breaks apart. This continuous motion provides the possibility for parts of the layer to collide, rub against, and distant that can generate energy in it. If the energy is constantly dumped, over time the energy will come off. The sudden release of energy is what causes earthquakes. Like a rubber band pulled and then suddenly released. The power that is dumped then released is called tectonic deformity. Strength of tectonic earthquake vibration is greater than volcanic earthquake. Tectonic earthquakes can also cause a tsunami if the earthquake center is at the bottom of the sea surface. For example the earthquake that hit the tsunami in Aceh in 2004 that killed at least 115,000 people and destroyed buildings around it.
The earthquake occurs due to collapse. The strength of this earthquake is low because it only felt in the area around it. This earthquake can occur due to the empty space in the lithosphere layer. Usually occurs inside caves, mining areas, or landslides. If the roof of the cave collapses, it will cause the earthquake terban. This earthquake can also occur in areas that are steep and prone to collapse. This earthquake can cause casualties if the victim is buried in a ruin.
Earthquakes are dangerous and have a negative impact on us. However, there are several ways we can do to save ourselves in the event of an earthquake. If you are indoors, look for a safe place from the ruins of the roof. If you are outdoors, choose a clearing. Stay away from trees, power poles, buildings, and anything else that has the potential to collapse. If you are in an elevator, push all sorts of buttons or floors closest to your position and get out when the elevator stops and then find your way out. If you are on the beach and the earthquake is a potential tsunami, head straight for the plateau. Victims of the earthquake will usually experience trauma because of the incident. Therefore, if you meet an earthquake victim, invite a chat and have fun. Do not ask what is related to earthquakes and what events he has been through
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