GEO 210 Lecture Notes - Lecture 11: Eastern Canada, Epicenter, Hypocenter
9 Apr 2016
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Document Summary
We understand the distribution of matter in the interior of the sun- far better than we understand the interior of the earth. About 15% of the planet"s landmass is in zones of high or very high hazard. Over the next 50 years 10% of the planet will likely experience violent shaking. The focus or hypocenter is the point where a rupture takes place. The epicenter is the point on the earth"s surface directly above the focus. Magnitude is related to the amount of seismic energy released at the focus (richter scale) Intensity is based on the observed effects of the group shaking: impact on people, buildings, natural features, will vary from place to place based on the location of the observer relative to the. Earthquakes with a magnitude less than or equal to 2. 0 are termed micro-earthquakes: average per day on planet 2, not commonly felt. Average of 1 on the planet every year. Total top: china and middle east.
