In 1964, the Great Alaska Earthquake was recorded with a magnitude of 9.2. This is the second largest earthquake ever registered. I posted some pictures which shows the massive damage which occurred:




The Alaska Seismic Hazards Safety Commission is an agency which measure and evaluates the movement of tectonic plates. For the report of February 2010, the agency estimates the fault’s long term slip (http://www.dggs.dnr.state.ak.us/download/ashsc_meetings_minutes/ASHSC_2010_annual_report.pdf).

The ASHSC proofs that in a specific Alaska zone, the earth moves about 0.4 inches per year. This is pretty accurate taking in consideration that Pacific tectonic plates moves at about 0.5 inches per year.
Resources:
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1) http://www.johnmartin.com
2) http://www.ce.washington.edu
3) http://kska.org
4) http://www.infoaboutalaska.com
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