6533b858fe1ef96bd12b6dd1
RESEARCH PRODUCT
Early warning thresholds for partially saturated slopes in volcanic ashes
John EichenbergerLyesse LalouiAlessio Ferrarisubject
geographygeography.geographical_feature_categorySeepage analysiWarning systemComputer Science Applications1707 Computer Vision and Pattern RecognitionContext (language use)Partially saturatedLandslideGeotechnical Engineering and Engineering GeologyComputer Science Applicationsearly warning thresholdseepage analysisPartially saturated soilslope stabilityVolcanorain infiltrationSlope stabilityvolcanic ashEarly warning systemGeomorphologyGeologyVolcanic ashdescription
Rainfall-induced landslides in steep soil slopes of volcanic origin are a major threat to human lives and infrastructure. In the context of constructing early warning systems in regions where extensive data on landslide occurrences and associated rainfall are inexistent, physically-based tools offer the possibility to establish thresholds for measurable field quantities. In this paper, a combined finite element infinite slope model is presented to study the transient hydraulic response of volcanic ash slopes to a series of rainfall events and to estimate seasonal safety factors. Furthermore, analytical considerations of partially saturated infinite slopes are made to define capillary stress thresholds for a landslide early warning system. © 2012 Elsevier Ltd.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-04-01 |