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The study of earthquakes.

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Introduction

The study of earthquakes is called Seismology, and has always been a vital source of information in regards to the specific functioning of the earth. If man did not know about earthquakes we would not have know that the earth is not one solid ball, but instead made of interconnected plates. Conversely, it could be said that without plate tectonics, there would be no earth quakes. In this essay I will be discussing one of the worlds worst natural disasters, and how predicting them benefits the public. earthquakes are made of different parts, the origin, called the focus. Since this is often deep below the surface and difficult to map, the location of the earthquake is often referred to as the point on the earth surface directly above the focus. This point is called the epicentre. There are a two major theories as to how earthquakes occur, but the most widely accepted. "Is involving slipping faults and the elastic rebound theory" (Skinner, Porter,2000;428) ...read more.

Middle

They cannot move through liquids. On the surface of the earth, S-Waves are responsible for the sideways displacement of walls and fences. S-Waves move particles at 90 degrees to the waves direction. Earthquakes are cause to much damage over the entire earth, they cause damage to both environment and to residential areas. Because earthquakes are a threat to humans, we are required to research them and come up with methods to predict when we can expect a quake to occur. Earthquakes are a serious natural hazard in many parts of the world. They often seem to strike without warning, sometimes inflicting massive damage and casualties. Often they occur in predictable areas such as plate margins where earthquakes have occurred in the past, scientists are left with little to no option but to come up with a way to warn the public when this natural hazard could occur. Because earthquakes are so devastating, there is great interest in the study of predicting earthquakes. ...read more.

Conclusion

People can prevent maximum damage by using the 'squat' method, and building there houses low and wider, with deeper foundations, making it harder for the house to fall down in the occurrence of an earthquake. There is nothing we as humans can do to prevent an earthquake from occurring, but we can research and try find new ways to prevent major casualties and monetary losses to an area struck by an earthquake. "one well known successful prediction was the Haicheng, China earthquake of 1975, when an evacuation order was sent out the day before an 7.3 rated earthquake on the Richter scale struck." (Ludwin, R, 2002, Earthquake Prediction [on-line]). In conclusion we have seen just how lethal and destructive an earth quake can actually be if occurs in a populated area. We see how humans are not the only ones affected, and how the environment is destroyed as well. Hopefully in the future, as the machinery becomes more scientific, we, as scientists would have found a more accurate method in predicting earthquakes, to prevent any further major casualties and destruction in the future. ...read more.

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