Reconstituted Earthquake Ground Motion at Anchorage

To aid analysis of the dynamic response of \nstructures to the Alaska earthquake, a simulated accelerogram \nof the ground motion at Anchorage was constructed by combining \ninformation from a variety of secondary observations of the \nmotion and its effects with knowledge of general earthquake \nground motions. A maximum acceleration or approximately 15 \npercent of gravity is indicated. The strong ground shaking lasted \nfor about 1 minute and was followed by approximately 3 minutes \nof lesser shaking.