GEOG 312 Lecture 2: Module 02 Earthquakes.pdf
13 Mar 2015
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Document Summary
Eqs in the news: japan: magnitude 9. 0 earthquake in march 2011, most powerful in japan"s history, caused a 400 km long rupture, created a tsunami up to 33 ft high, resulted in more than 27,000 casualties and. Eqs in the news: haiti: magnitude 7. 0 (moment magnitude mw) Eqs in the news: us east coast, august, 2011: east coast earthquake waves have low magnitude (m) but travels 10-100 times further than the. West coast: older, colder fault lines are less seismically active but hard, dense ground is a better conductor. Is there a characteristic earthquake regime on a fault that occurs at regular intervals: general case considerable variation in magnitude and recurrence interval (rater than a characteristic, or predictable, size and return period), earthquakes occur without warning. American continental plate at the cascadia subduction zone: about two-thirds have been full-length ruptures, or a swift series of shorter ruptures, maps shows location of locked seismic source zone (a)
