Why is it important to determine the epicenter of an earthquake
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Answer:
The main importance in determining the epicentre is so that the fault that ruptured causing the earthquake can be identified. If the fault is previously unknown (such as the 2010 Canterbury earthquake), then it is important because it means that the hazard models for the area need improvement .
Explanation:
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Explanation:
Epicentre is the point on the earth's surface directly above the earthquake origin (hypocentre). So it is the shortest distance for the earthquake vibration to reach the earth and the maximum vibration will be felt in the epicnetral region.
Thus a knowledge of epicentre will help in assessing the damage zone where death and destruction will be maximum, we can rush the support and plan disaster relief accordingly. If the epicentre is in the inhabited region, loss to human life is the least or may not be there at all (no doubt the spread of surface waves from epicentral region to other parts too will induce damage). Secondly if the epicentre is in the sea an imminent tsunami warning can be issued. This is withdrawn later when the associated mechanism is found other than dip slip movement. Knowledge of epicentre and depth helps in analysing the residual sesimicity of the area.
Thus knowing epicentre is the first step in planning post-earthquake rehabilitation and relief measures, in forewarning of tsunami-related hazard and in assuring of minimum loss to life and property if it is the deserted or inhabited region. In fact three parameters - epicentre, depth and magnitude are essential and crucial for/ in assessing earthquake hazard - both present and future.