Search results for "Triangulated irregular network"

showing 3 items of 3 documents

Implications of terrain resolution on modeling rainfall-triggered landslides using a TIN- based model

2021

Abstract This study employs a distributed eco-hydrological-landslide model, the tRIBS-VEGGIE-Landslide, to evaluate the influence of terrain resolution on the hydro-geomorphological processes involved in slope stability analysis. The model implements a Triangulated Irregular Network (TIN) to describe the topography starting from a grid-DEM. Five grid-DEM resolutions of the case study basin, i.e., 10, 20, 30 and 70 m, are used to derive the corresponding TINs. The results show that using irregular meshes reduces the loss of accuracy with coarser resolutions in the derived slope distribution in comparison to slope distributions estimated from the original grid-based DEM. From a hydrological p…

Environmental EngineeringSlope stability analysisEcological ModelingHydrological modellingSettore ICAR/02 - Costruzioni Idrauliche E Marittime E IdrologiaResolution (electron density)TerrainLandslideSoil scienceHydrologic modelingTriangulated irregular networkDigital elevation modelsSlope stabilityNumerical modelingDigital elevation models; Hydrologic modeling; Landslides; Numerical modeling; Slope stability analysisDigital elevation models Hydrologic modeling Landslides Numerical modeling Slope stability analysisDigital elevation modelSlope stability analysisLandslidesSoftwareGeologyEnvironmental Modelling & Software
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Accounting for soil parameter uncertainty in a physically based and distributed approach for rainfall-triggered landslides

2015

In this study we propose a probabilistic approach for coupled distributed hydrological-hillslope stability models that accounts for soil parameters uncertainty at basin scale. The geotechnical and soil retention curve parameters are treated as random variables across the basin and theoretical probability distributions of the Factor of Safety (FS) are estimated. The derived distributions are used to obtain the spatio-temporal dynamics of probability of failure, in terms of parameters uncertainty, conditioned to soil moisture dynamics. The framework has been implemented in the tRIBS-VEGGIE (Triangulated Irregular Network (TIN)-based Real-time Integrated Basin Simulator-VEGetation Generator fo…

Hydrology0208 environmental biotechnologyProbabilistic logicLandslideSoil science02 engineering and technologyStability (probability)020801 environmental engineeringTriangulated irregular networkFactor of safetyProbability distributionEnvironmental scienceRandom variableWater Science and TechnologyEvent (probability theory)Hydrological Processes
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A Self-Contained and Automated Method for Flood Hazard Maps Prediction in Urban Areas

2020

Water depths and velocities predicted inside urban areas during severe storms are traditionally the final result of a chain of hydrologic and hydraulic models. The use of a single model embedding all the components of the rainfall&ndash

lcsh:TD201-500lcsh:Hydraulic engineeringFlood mythHydrological modellingNode (networking)Geography Planning and DevelopmentElevationAquatic ScienceBiochemistryRegular gridTriangulated irregular networkSettore ICAR/01 - Idraulicaflood mappingflood mappinglcsh:Water supply for domestic and industrial purposeslcsh:TC1-978Contour lineintegrated modellingrunoff quantity controlDigital elevation modelrunoff quantity controlGeologyWater Science and TechnologyRemote sensing
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