Regional Method to Assess Offshore Slope Stability
Publication: Journal of Geotechnical Engineering
Volume 112, Issue 5
Abstract
The slope stability of some offshore environments can be evaluated by using only conventional acoustic profiling and short‐core sampling, followed by laboratory consolidation and strength testing. The test results are synthesized by using normalized‐parameter techniques. The normalized data are then used to calculate the critical earthquake acceleration factors or the wave heights needed to initiate failure. These process‐related parameters provide a quantitative measure of the relative stability for locations from which short cores were obtained. The method is most applicable to offshore environments of gentle relief and simple subsurface structure and is not considered a substitute for subsequent site‐specific analysis. Four sites off California and Alaska contain acoustically defined sediment failures. Calculated critical earthquake factors in these failed areas are typically lower than in adjacent unfailed areas, a result lending credence to the method.
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Information & Authors
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Published In
Journal of Geotechnical Engineering
Volume 112 • Issue 5 • May 1986
Pages: 489 - 509
Copyright
Copyright © 1986 ASCE.
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Published online: May 1, 1986
Published in print: May 1986
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