Sunday, December 5, 2010

Earthquake and Volcanic Eruption

Earthquake is a familiar word for everyone especially for the people in Indonesia and Philippine. They are the majority people who face earthquake and not often, but all the time. I assume these people have not learnt about how to react during disaster and what all the ways they can do to reduce damage. May be its just because they are living in LEDC’s so their government couldn’t afford to help them or in other word can’t protect them efficiently. 

Do you know about the recent volcanic eruption in Philippine on 21st November? You may get confuse why am I asking about volcanic eruption when I am informing you about Earthquake. Do not worry, I won’t confuse you. There is a relationship between Volcanic Eruption and earthquake. Many people think that earthquake is just shaking of ground and buildings collapse. Do you know what cause the earthquakes?

The Major cause for the Earthquake is movement of the tectonic plates and volcanic eruption.

Tectonic plates which is the movement of plates slowly under the earth crust layer. When there is new plate formed and it got no place to move from its original position and it cannot merge with the plate which is already exists. It breaks into and there it forms earthquake. Also when two plates meets opposite and when it cannot drift to move to other side without joining, it crash into each other and form earthquakes.


Volcanic eruption affects the inner plates and that causes the earthquake. Volcanic eruption is the release of molten magma, which is formed by high temperature under the earth crust and is waiting for the opening to release it pressure. As it releases its volcano, it also disturbs the tectonic plates, which result it into earthquake.


 Let us learn some news about volcanic eruption.

The top 10 most devastating volcanic eruptions based on recorded death toll.



1. Mt. Tambora, Indonesia, 1816 – Death Toll: 92000 – This cataclysmic event that happened on April 10-15, 1816 killed about 92,000 individuals which included 10,000 whose cause of death is due to the ash fall and explosion, and about 82,000 from other causes attributable to the volcanic eruption.

2. Mt. Pelee, West Indies, 1902 – Death Toll: 40000 – Previously believed to be a dormant volcano, Mt. Pelee started its devastating activity in the early 1902 and leveled the entire city of St. Pierre.

3. Mt. Krakatoa, Indonesia, 1883 – Death Toll: 36000 – The devastation wrought by the volcanic explosion left 75% of the island in total ruin. The sound blast was the loudest that was ever recorded and was even heard as far as Australia.

4. Nevado del Ruiz, Columbia, 1985 – Death Toll: 23000 – The death from these volcanic eruptions was mainly due to the massive mudslides brought about by the melting of the ice cap of Nevado del Rio burying the City of Armero.

5. Mt. Unzen, Japan, 1792 – Death Toll: 15000 – This volcanic eruption occurred along the very active Pacific Rim of Fire. This cataclysmic event led to avalanches and tsunami.

6. Mt. Vesuvius, Italy, AD 79 – Death Toll: 10000 plus – It is one of oldest recorded volcanic eruptions which leveled the Roman towns of Herculaneum and Pompeii. It lasted for 19 hours and dumped and left Pompeii buried in 10 feet of ash.

7. Laki Volcanic System, Iceland, 1784 – Death Toll: 9350 – It persisted with almost a year of explosion leaving a dusty haze which led to serious food shortages. Death toll was mainly attributed to widespread starvation.

8. Mt. Vesuvius, Italy, 1631 – Death Toll: 6000 – This active volcano has had almost a dozen explosions following the major eruption in AD 79. The 1631 eruption swamped the surrounding towns with hot lava which was accompanied by the ejection of boiling water.

9. Mt. Kelut, Indonesia, 1919 – Death Toll: 5110 – This major volcanic activity of Mt. Kelut resulted to the death of many people due to the mudslides that happened during the eruption.

10. Mt. Galunggung, Indonesia, 1882 – Death: 4011 – This devastating volcanic eruption left a path of widespread destruction and death to an estimated 4011 individuals. 






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