March 27 is coming up soon so its a good time to remember this important Alaskan historical event. This was a time when the rich flavor of old Alaska still reigned supreme and it was a given a neighbor could count on a neighbor in times of need and natural disaster. The oil industry was yet in its infancy as compared to today. Timber and commercial fishing were important mainstays of the economy and of course federal government employment. There was a general feeling that we as Alaskans were somehow different than the rest of the nation. We were strong, independent and fiercely proud. We pulled together in times of adversity. We were different. It was an outstanding time to be in Alaska, it seemed everybody knew everybody. I was only 10 years old but I remember the earthquake, the devastation, lives lost, and the rebuilding.
On March 27, 1964, at 5:36 p.m. ADT (03:36 3/28 UTC) a great earthquake of magnitude 9.2 (moment magnitude) occurred in Prince William Sound region of Alaska. The epicenter was about 10 km east of the mouth of College Fiord, approximately 90 km west of Valdez and 120 km east of Anchorage. The epicenter was located at Lat. 61.04N, Lon. 147.73W, at a depth of approximately 25 km. This earthquake is the second largest earthquake ever recorded in the world. after a M9.5 earthquake in Chile in 1960. The duration of rupture lasted approximately 4 minutes (240 seconds).
As a result of the 1964 quake, the Latouche Island area moved about 18 meters to the southeast. Also, the patterns of uplift and subsidence which had been slowly developing prior to the earthquake were suddenly reversed, with areas around Montague Island being uplifted 4-9 meters and areas around Portage down-dropped as much as 3 meters. The hinge line (line of no vertical change separating the uplift and subsidence zones) extended from near the epicenter in Prince William Sound to the SE coast of Kodiak Island. This vertical deformation affected and area of approximately 250,000 km2 (100,000 miles2). The end results was the movement of the Pacific plate under the North American plate by about 9 meters on average.
http://www.aeic.alaska.edu/quakes/Al...arthquake.html


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