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Earthquakes..?? Why do they occur???

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As one of nature’s most frightening and destructive phenomena, earthquakes have always aroused a sense of fear. Even when an earthquake begins, there is no way to tell how strong the shaking will be or how long it will last. It is estimated that more than 13 million people have died as a result of earthquake during the past 4,000 years and just recently China has experienced a great quake that killed thousand of people.

Photos courtesy of LAtimes

An earthquake is defined as the vibration of the Earth caused by a sudden release of energy beneath the Earth’s surface, usually as a result of displacement of rocks along the fractures known as faults. Following an earthquake, adjustments along a fault commonly generate a series of earthquakes referred to as aftershocks. Most of these are smaller than the main shock, but they can cause considerable damage to already weakened structures. Aftershocks was also felt in China but it did not caused much deaths unlike the earthquake. Take note, aftershock activity usually ceases within a few days, but it may persist for months following a large earthquake.

Did you know that majority of all earthquakes about 80% occur in the circum-Pacific belt, a zone of seismic activity nearly encircling the Pacific ocean basin. So that means US Pacific coast and Asia Pacific are more prone to earthquakes. Meanwhile 15% of the earthquakes occur within the Mediterranean-Asiatic belt, this is the location of the China quake that brought horror to the innocent people of the Sichuan Province. And the remaining 5% occur in the oceanic plates.

This is all for now folks, I will soon publish on how to protect ourselves from the damaging effect of earthquakes. Take care and Adios!

One Response to “Earthquakes..?? Why do they occur???”

  1. JesieBlogJourney says:

    Jason,
    I have never experienced earthquakes and I hope I never will. Recently I have been receiving email forward pictures in Sichuan, China.

    It’s good to know how to protect in the event that it were to occur when you least expect it. I will wait on your next post on how to protect against its damaging effects.

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