200901747 Shin Myungchul Second Draft.

200901747 Shin Myungchul Second Draft.

 

  volcanic eruption has always been a threat to human being, whether in ancient times or in modern times. For example,

 

in A.D. 79, Mt. Vesuvius located in Italy erupted and erased Pompeii out of the map. And a couple of month before, a

 

volcanic eruption in Iceland halted hundreds of thousands of flight schedule. How come this magnificant power can be

 

exhaled from earth? Volcanic eruption is mainly due to fluctation of earth.

 

   Almost all causes of volcanic eruptions are natural. Mantle, which bolsters crest is a liquified solid materials flows

 

beneath earth, and this combination of mantle and crest is plate. Since these plates slowly move, they eventually collide

 

with each other and in the process they makes strong shaking which is earthquake. Earthquake gives pressure to

 

magma beneath the crest, and suppressed magma finds way to get out. So, fragile part of the crest is crashed by

 

magma and magma start to burst out. This is the most common mechanism of volcanic eruption.

 

   As well as plate fluctation, some other natural factors can be a fuse of volcanic eruption. For instance, some scientists

 

suggest a theory that the global warming is a cause of Iceland volcanic eruption. Meltdown of glaciers due to warm

 

climate lowers the pressure to magma, which can make eruption more easier. Flooding can be a cause for eruption.

 

Merapi Volcano, located in Indonesia bursted because of the heavy flood.

 

   Human being can also provoke eruption. Lusi volcano, also in Indonesia erupted on March, 2006 and reseachers are

 

pointing fingers at reckless gas mining. Cracks of the underground gas pipe led to a leaking of gas and that accident is

 

said to be a culprit of eruption.

 

   In short, Volcanic eruption can derived by three factors. Natural and most popular cause of magma burst and other

 

natural causes which is relatively rare. And most important, man- made causes. Of course, volcanic eruption is a tragic

 

calamity. That much is clear. In order to tackle those problems, some ideas can be suggested. To successfully reduce

 

the aftermath of eruption, preparations is needed. For natural cause, well-organised warning system based on thorough

 

speculation should always be at service any time. And for man-made cause, drastic prior examination for exploitation

 

must be needed. Since volcanic eruption is such an gigantic disaster which can not be prevented, complete provision is

 

impossible. Instead, lessen the impact of volcanic eruption is surely possible. Handling the volcanic eruption can save

 

millions of fortune and lives, so nothing is more important than this sublime work.