GEOL 106 Lecture Notes Feb 12.docx

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Geological Sciences and Geological Engineering
GEOL 106
David Alan Hanes

MIDTERM Thursday feb 28 7:30-9:00 conflict email tyler nash [email protected] Assessing Seismic Risk Of An Area 1. Locate and determine nature of faults in the area 2. Study history of earthquakes in the area -Set up seismometersgives an idea of which faults are most active, and the frequency and magnitude of quakes critical to collect as long a seismic record as possible How often do big earthquakes occur in the area? Which faults are most active? What sort of energy is released by quakes? EX: What zones are the most prone to earthquakes in Canada?  Looked at maps displaying seismic activity over 1 month, 1 year, 5 years, and 30 years and 3 major areas can be seen: Western Canada, Eastern Canada, and Arctic. Low population in Arctic means less risk, which leaves Western and Eastern Canada. We are looking at putting a nuclear reactor in Kingston, so we zoom in on Eastern Canada. In Kingston area, biggest quake is mag 2 even though there is a fair amount of activity -Determine the Recurrence Interval for “big” earthquakes in the area How often do big quakes occur? (Big = greater than mag 7) Recurrence intervals are averages, not set intervals of time!
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