Volcano

volcano ( ถูเขาไฟปะทุ )

          Volcano  is a volcanic eruption of magma formed from volcanic gases and ashes from under the crust already appeared as topography. Volcanoes are both extinct and still have power. Extinct volcano is a volcano that happened a very long time. May be several hundred million years. Hardened magma that flows out into the volcanic rock on Earth. The volcano has erupted with a volcanic power. Or suspended temporarily. Igniting a volcano for a thousand years ago. Eruption may be new again. This present world is a powerful volcano is about 1.300 children and many become extinct volcano is the key.

1) the factors that caused the eruption of the volcano.
           1.1), the eruption of magma, ash and gases from the earth's crust. The eruption usually signal indications to predict such earthquakes in the surrounding area. Volcanic vibrations. Sounds like thunder. The sound is caused by the movement of magma, gas and steam were recorded. When there is lava erupting volcanic ash, dust, waste rock. Be ejected out of the crater or the channel side of the volcano. Or fractures of the volcano. When the magma to the surface is called "lava" (Lava) lava onto the Earth's surface temperature to 1.200 ⁰ C along the slope of the area.
         1.2) The eruption of magma or magma. Magma within the gas. When magma moves up near the surface by opening various gases. Dissolved gas bubbles to break away as it adds a lot more. And expanding rapidly. The viscosity of the magma that bubbles to rise as well. And the cracking of gas bubbles simultaneously. With the expansion, then it erupted violently.

2 ) the occurrence of volcanic eruptions. In the volcano 's erupting volcano is a continuous phenomenon . It is declared that the earth has magma molten mass is cooled again and try to get it. The eruption of the volcano in Year 2552-2553 . Occurred in countries such as the Philippines have thrown in a volcano spewing ash and debris into the sky. Since December 24, 2552 have been evacuated out of the area , but it appears that he did not fire erupted on January 6, 2553 Alabama Real Rochester volcano in Costa Rica. The fogging and lava eruptions , forest fires cause more heat . As a result, the pin feathers are evacuated from risk areas. Since October 26, 2553 in Merano volcano on the island of Java, Indonesia. Has erupted violently several times. Resulted in the death of more than 300 people have been evacuated from risk areas around 90.000 people . And a lot of property damage .
     Volcano disrupted living in all regions of the world. What is a volcano that was extinct volcano waiting to erupt. Of geological data indicate that the world is a large volcano with a height of 4.500 meters above to 14 below.

   
In Thailand, there is a volcano in the region. The most active volcanoes in the volcanic shield (Shield Volcano), a volcano that is about 4-10 degrees less steep volcanoes are caused due to the spread of volcanic basalt, which is a liquid and flows easily. Flow is spread out over a wide area. If there is no violence erupted.

Volcanic activity in many regions of Thailand is an extinct volcano. Found in the following.

3 ) the effects of volcanic eruptions .

                1. Causing vibration. The earthquakes have warned . Real earthquake . And earthquake monitoring. If the people to settle in the volcano may run late and potential losses to life and property .

               2 . Lava flow . May flow from the crater and movement speed to 50 kilometers per hour. Humans and animals might escape and catch a big loss .

                3. The dust from the mountain ash, the volcano erupted , covering the area near the volcano into the atmosphere . And wind may blow them away in the middle of a volcanic eruption thousands of miles . Air and water pollution . In drinking water for the people. When heavy rain caused flooding and mud guard will come from wind , dust and volcanic ash on them.

                4 . Resulting tsunami . The size of the eruption of the volcano . The underwater volcano . This wave may be launched in the third grade to high buildings .

      4) Beware of disaster caused by the volcanic eruption . Can be done as follows .

                     1. Requires predicting that the volcano will erupt . And may be harmful to the public or not . By publicity. Forecasting and early warning of volcanic eruptions on television for public awareness thoroughly. Clearly occurs when Need to be evacuated or not . Because some people do not want to be evacuated until the eruption . And the people returned to their homes as soon as possible when

                   2.  Forecasting should start with observation data collection and analysis by an experienced neurologist volcano not serious . The volcanic eruption is often two to three billion people of the world may know that I've settled on an extinct volcano or fire them. Therefore, an early warning can reduce the number of people who were victims of the volcano should also know where the volcano . When will erupt . To protect life and property when disaster strikes up .

                   3. Educating the public. Done at any time before, during and after disasters . When the public learned of the catastrophic eruption of the volcano. Since that early warning of volcanic eruptions have been half way to success . Better than the public is in the dark when the plague .

Bibliography : http://etcgeography.wordpress.com