Earthquakes - the diverse variety of physical (geological and geographic) and human (economic, political and historical) factors that influence how significant an earthquake can be
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- Thu Mar 11 2004

Have a little read: ... Earthquake Show how the impact of earthquakes varies with the scale of the hazard & other factors. There are a diverse variety of both physical (geological and geographic) and human (economic, political and historical) factors that influence how significant an earthquake can be. The magnitude of the earthquake can be measured by seismographs using a logarithmic Richter scale, measuring the earthquake strength. However this often bears little resemblance to the actual impact of the earthquake, (which can be measured using the descriptive / qualitative Modified Mercalli scale which measures the physical effect of the earthquake) for the following reasons... One of the ideas that must be considered is how the magnitude of the earthquake is not directly proportional to the intensity of the earthquake as there is a considerable distance between the focus (point of fracture) and epicentre (point on surface vertically above focus on earth surface). If the focal point is
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