Landslides and Engineering Geology of the Seattle, Washington, Area
This volume brings together case studies and summary papers describing the application of state-of-the-art engineering geologic methods to landslide hazard analysis for the Seattle, Washington, area. An introductory chapter provides a thorough description of the Quaternary and bedrock geology of Seattle. Nine additional chapters review the history of landslide mapping in Seattle, present case studies of individual landslides, describe the results of spatial assessments of landslide hazard, discuss hydrologic controls on landsliding, and outline an early warning system for rainfall-induced landslides.
A prototype system for forecasting landslides in the Seattle, Washington, area
Published:January 01, 2008
Alan F. Chleborad, Rex L. Baum, Jonathan W. Godt, Phillip S. Powers, 2008. "A prototype system for forecasting landslides in the Seattle, Washington, area", Landslides and Engineering Geology of the Seattle, Washington, Area, Rex L. Baum, Jonathan W. Godt, Lynn M. Highland
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Empirical rainfall thresholds and related information form the basis of a prototype system for forecasting landslides in the Seattle area. The forecasts are tied to four alert levels, and a decision tree guides the use of thresholds to determine the appropriate level. From analysis of historical landslide data, we developed a formula for a cumulative rainfall threshold (CT), P3 = 88.9 − 0.67P15, defined by rainfall amounts in millimeters during consecutive 3 d (72 h) periods, P3, and the 15 d (360 h) period before P3, P15. The variable...