A Study of Seismic Risk near Pipeline Corridors in Northwestern Canada and Eastern Alaska

Seismic risk in the Yukon Territory and adjacent areas of the western Northwest Territories and eastern Alaska is evaluated from locations and magnitudes of earthquakes in northern Canada and Alaska from 1899 to 1970. Contour maps illustrate strain release and also predicted accelerations on firm so...

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Bibliographic Details
Published in:Canadian Journal of Earth Sciences
Main Authors: Stevens, A. E., Milne, W. G.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1974
Subjects:
General Earth and Planetary Sciences
Arctic
Yukon
Northwest Territories
Canada
Fort McPherson
Mackenzie Valley
Arctic Red River
Old Crow
Alaska
Online Access:http://dx.doi.org/10.1139/e74-013
http://www.nrcresearchpress.com/doi/pdf/10.1139/e74-013
Description
Summary:Seismic risk in the Yukon Territory and adjacent areas of the western Northwest Territories and eastern Alaska is evaluated from locations and magnitudes of earthquakes in northern Canada and Alaska from 1899 to 1970. Contour maps illustrate strain release and also predicted accelerations on firm soil for return periods of 30, 50, and 100 years. Calculated values of these risk parameters may vary by a factor of two or more from actual values due to the short earthquake history of the region studied, uncertainties in location and magnitude of past large earthquakes, lack of measured ground accelerations in the regions, and the unknown modifying influence of soil and subsoil materials.Seismic risk may be significant for parts of the Mackenzie Valley pipeline corridor in the vicinity of Fort McPherson between mile 700 (east of Arctic Red River, Northwest Territories) and mile 850 (east of Old Crow, Yukon Territory).

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