The occurence of the earthquake

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Claire Thomas

February 11th 2009

The occurrence of the earthquake hazard and the highest level of vulnerability is centred upon the economically developing nations. Discuss the truth of this statement and make recommendations concerning how LEDC’s might manage the earthquake hazards.

Earthquake hazards are one of the three geological hazards that occur.  Earthquakes have lots of energy that cause destruction on the planet.  There are up to 3000 earthquakes per year and about 30 cause serious damage.  Most of the damage occurs in LEDC’s because poor infrastructure and housing is not earthquake proof.  The way forward is to manage earthquakes hazards in LEDC’s so when they do strike the area is not likely to suffer lots of damage and loss of life.

    The earth is made up of many different plate tectonics, some large like the Pacific plate and some small like the Nazca plate.  Most activity happens are plate boundaries and there are three types of boundaries.  Destructive plate boundaries are where one plate the less dense Nazca (sima) is sub ducting under another more dense plate, South American (sial).  Conservative plate boundaries merely slide place each other and are quite inactive.  Earthquakes are very rare here compared to destructive plate boundaries. There is also constructive plate boundaries, where plates are pulling apart and sea trenches and ridges appear. When friction builds up between the two plates moving towards each other cause friction to release and cause an earthquake.

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    LEDC have highest amount of vulnerability due to the amount of poor infrastructure and poor emergency response. The seismic gap theory helps scientists accurately predict where an earthquake is going to occur, however they cannot say when.  Istanbul in Turkey is on the 1500 km fault line called the San Antonio.  Scientists are able to say that Istanbul will be the next spot because of the accurate prediction of the Izmit Bay Earthquake.  It is before Istanbul on the fault line and scientists said it was next in 1998 and in August 1999 their predictions came true. It ...

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