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Unformatted text preview: 4-27 Wegener- father of plate tectonics http://www.ucmp.berkeley.edu/history/wegener.html Hess- discovered, Guyots- remains of coral reefs http://www.accessmylibrary.com/coms2/summary_0193-13943_ITM 1963- Vines and Matthews Found a spreading center Earthquakes Pacific Ocean – Ring of Fire Most destructive of natural disasters CRED-Rapid on-set, short lived They can trigger other disasters such as fires, and tsunamis 5,000-6,000/ year at 3.0 20/year at 7.0 Inter plate quake- inbetween two plates occur by plates animals can sense earthquakes better then humans Intra plate quake-occur on the plate, 1811,1812, 8.0 Pacific rim, most active place, almost ½ of the worlds earthquakes 1886, Charleston, sc killed 100 people, divergent riff- in oceans, new ocean floor is being created convergent zone- two plates come together shear- two plates slide pass each other at different speeds richter – quantitave, amp of sizemic waves, logramithic, mercalli- qual ...
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- Fall '09