Modeling 3-D slope stability of coastal bluffs using 3-D ground-water flow, Southwestern Seattle, Washington

Brien, Dianne L.; Reid, Mark E.

doi:10.3133/sir20075092

Cited by 15 publications

(11 citation statements)

References 15 publications

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“…However, thicker or deep-seated landslides, like those observed at Grimes Canyon and South Mountain, are associated with more sustained periods of above-normal rainfall over more than one season (Galster and Laprade, 1991;Van Asch et al, 1999;Corominas, 2001;and Sidle and Ochiai, 2006). However, Brien and Reid (2007) described movement of several deep-seated landslides following intense rainfall in Seattle, Washington. Chleborad (2003) found the rainfall threshold for deep-seated landslide in the Seattle area to be between 67 and 103 mm (2.64 and 4.06 in.…”

Section: Landslide Initiationmentioning

confidence: 87%

“…in the 15 days preceding slope movement. The mean of these 15-day intense rainfall events represents approximately 10 percent of the total annual rainfall (Brien and Reid, 2007). In Southern California, Slosson and Larson (1995) found that annual precipitation exceeding 140 percent of normal is a general threshold for predicting the initiation of shallow slope movements.…”

Section: Landslide Initiationmentioning

confidence: 98%

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The Influence of Irrigation on Slope Movements, Ventura County, California, USA

Knott

2008

Environmental and Engineering Geoscience

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Section: Landslide Initiationmentioning

confidence: 87%

Section: Landslide Initiationmentioning

confidence: 98%

The Influence of Irrigation on Slope Movements, Ventura County, California, USA

Knott

2008

Environmental and Engineering Geoscience

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“…Since the bottom of each grid element is part of the sphere, the surface is approximately treated as a plane with an angle of ε to the horizontal plane [24]. Scoops3D calculated the shear strength through the linear Coulomb-Terzaghi instability criterion [25].…”

Section: The Volume Of Unstable Soil Calculated By the Scoops3d Modelmentioning

confidence: 99%

The Application of a Three-Dimensional Deterministic Model in the Study of Debris Flow Prediction Based on the Rainfall-Unstable Soil Coupling Mechanism

Qiao¹,

Qin²,

Chen³

et al. 2019

Processes

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As debris flow is one of the most destructive natural disasters in many parts of the world, the assessment and management of future debris flows with proper forecasting methods are crucial for the safety of life and property. So increasing attention has been paid to the forecasting methods on debris flows. A debris flow forecasting method based on the rainfall-unstable soil coupling mechanism (R-USCM) is presented in the current study. This method is based on the debris flow formation mechanism. The density of sediment is introduced as an evaluation index to determine the susceptibility of debris flow occurrence. The forecasting method includes two phases: (1) rainfall and soil coupling and (2) runoff and unstable soil coupling. Scoops3D, a three-dimensional (3D) model for analyzing slope stability, was introduced into the debris flow forecasting method. In order to test the forecasting accuracy of this method, Jiaohe County was selected as a research area, and the serious debris flow disasters attributed to strong rainfall on 20 July 2017 were taken as the research case. By comparing the forecasting results with the debris flow distribution map for Jiaohe County, the method based on the R-USCM is feasible for forecasting debris flows at the regional scale. The application of the Scoops3D model can more reasonably analyze the slope stability than the traditional two dimensional (2D) method and improve the forecasting ability of debris flows.

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“…Scoops3D was applied for stability analysis of various aspects and areas in previous studies. It has been employed to evaluate the stability of volcano edifices (Vallance et al 1998;Reid et al 2001;Vallance et al 2004;Reid et al 2010), coastal bluffs (Brien and Reid 2007) and loess slopes (Xin and Zhang 2018). Tran et al (2018) utilized Scoops3D and TRIGRS to predict rainfall-induced landslides.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional seismic slope stability assessment with the application of Scoops3D and GIS: a case study in Atsuma, Hokkaido

Zhang

Wang

2019

Geoenviron Disasters

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Background: The 2018 Hokkaido Eastern Iburi earthquake (Mj 6.7, Mw 6.6), occurred on the 6th of September 2018 and triggered thousands of landslides in pyroclastic fall deposits. The triggered landslides caused destructive damages to the structures and resulted in serious causalities. Hundreds of earthquakes persisted after the mainshock and the Iburi region is of high possibility to suffer major earthquakes in the future. An effective method to assess the seismic slope stability is of great importance for the disaster prevention and mitigation in the Iburi region. Results: Based on the isopachs of different pyroclastic fall deposits mantled in the study area, GIS was employed to process the input soil layers and construct the 3D domain. By applying different horizontal pseudo-acceleration coefficients in the Scoops3D program, the factor-of-safety maps of eight cases were obtained. After validating by the coseismic landslide inventory, the performance of the computed results was evaluated. Conclusions: A horizontal pseudo-acceleration coefficient between 1/2 and 2/3 of PHGA is suitable for seismic slope stability assessment in pyroclastic fall deposits. The catastrophic Tomisato landslide and Yoshinoya landslide were correctly predicted. Scoops3D proves to be an effective and efficient method for guiding disaster mitigation and management.

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Modeling 3-D slope stability of coastal bluffs using 3-D ground-water flow, Southwestern Seattle, Washington

Abstract: Map image showing factor of safety (F) for critical surfaces with volumes between 30,000 and 300,000 m 3 , using average rainy-season recharge. The image shows mapped landslides compared with areas of relatively low

Cited by 15 publications

References 15 publications

The Influence of Irrigation on Slope Movements, Ventura County, California, USA

The Influence of Irrigation on Slope Movements, Ventura County, California, USA

The Application of a Three-Dimensional Deterministic Model in the Study of Debris Flow Prediction Based on the Rainfall-Unstable Soil Coupling Mechanism

Three-dimensional seismic slope stability assessment with the application of Scoops3D and GIS: a case study in Atsuma, Hokkaido

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