The determination of statistical and deterministic hydrological landslide-triggering thresholds

Terlien, M.T.J.

doi:10.1007/s002540050299

Cited by 250 publications

(172 citation statements)

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“…Although G3 events are characterized by low peak and mean rainfall intensities, rainfall durations are relatively long, resulting in mass movements long after peak rainfall. Terlien (1998) also showed that when there is no significant antecedent rainfall and rainfall intensity is low, a long-duration rainfall event is required to trigger landslides with high soil moisture content.…”

Section: Rainfall Conditions and I-d Thresholdsmentioning

confidence: 99%

“…This indicates that G2 is composed primarily of landslides, with release mechanisms directly related to hillslope hydrology. Soil moisture content is directly related to landslide occurrence (Terlien 1998;Wu and Chen 2009), and high antecedent rainfall elevates moisture content (Glade 1997;Crosta 1998;Crozier 1999;Glade et al 2000;Jakob 2006). Therefore, abundant antecedent rainfall combined with high-intensity rainfall can easily trigger landslides, especially around the time of peak rainfall.…”

Section: Rainfall Conditions and I-d Thresholdsmentioning

confidence: 99%

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Rainfall intensity–duration conditions for mass movements in Taiwan

Chen

Saitô

Oguchi

2015

Prog. in Earth and Planet. Sci.

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Mass movements caused by rainfall events in Taiwan are analyzed during a 7-year period from 2006 to 2012. Data from the Taiwan Soil and Water Conservation Bureau reports were compiled for 263 mass movement events, including 156 landslides, 91 debris flows, and 16 events with both landslides and debris flows. Rainfall totals for each site location were obtained from interpolated rain gauge data. The rainfall intensity-duration (I-D) relationship was examined to establish a rainfall threshold for mass movements using random sampling: I = 18.10(±2.67)D −0.17(±0.04) , where I is mean rainfall intensity (mm/h) and D is the time (h) between the beginning of a rainfall event and the resulting mass movement. Significant differences were found between rainfall intensities and thresholds for landslides and debris flows. For short-duration rainfall events, higher mean rainfall intensities were required to trigger debris flows. In contrast, for long-duration rainfall events, similar mean rainfall intensities triggered both landslides and debris flows. Mean rainfall intensity was rescaled by mean annual precipitation (MAP) to define a new threshold: I MAP = 0.0060(±0.0009)D −0.17(±0.04) , where I MAP is rescaled rainfall intensity and MAP is the minimum for mountainous areas in Taiwan (3000 mm). Although the I-D threshold for Taiwan is high, the I MAP -D threshold for Taiwan tends to be low relative to other areas around the world. Our results indicate that Taiwan is highly prone to rainfall-induced mass movements. This study also shows that most mass movements occur in high rainfall-intensity periods, but some events occur before or after the rainfall peak. Both antecedent and peak rainfall play important roles in triggering landslides, whereas debris flow occurrence is more related to peak rainfall than antecedent rainfall.

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Section: Rainfall Conditions and I-d Thresholdsmentioning

confidence: 99%

Section: Rainfall Conditions and I-d Thresholdsmentioning

confidence: 99%

Rainfall intensity–duration conditions for mass movements in Taiwan

Chen

Saitô

Oguchi

2015

Prog. in Earth and Planet. Sci.

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“…Es por esta razón que la evaluación de la amenaza y la capacidad de predecir estos fenómenos han sido temas de gran interés para la comunidad científica en la implementación de sistemas de alerta temprana (Caine, 1980;Montgomery y Dietrich, 1994;Finlay et al, 1997;Crosta, 1998;Terlien, 1998;Crozier, 1999;Polemio y Petrucci, 2000;Iverson, 2000;NOAA-USGS, 2005;Restrepo et al, 2008;Larsen, 2008).…”

Section: Introductionunclassified

“…En ambientes tropicales y terrenos montañosos como Los Andes colombianos, un alto porcentaje de estos movimientos en masa son provocados por intensas lluvias o eventos de larga duración (Aristizábal y Gómez, 2007), y se caracterizan por su pequeño espesor (0,3 -2 m), superficie de falla plana paralela a la superficie del terreno, y escarpe con área pequeña (Anderson y Sitar, 1995). Estos movimientos se generan como consecuencia de eventos de lluvia por el rápido aumento en la presión de poros positiva o por la pérdida de componente de cohesión aparente (Wang y Sassa, 2003;Terlien, 1998;Crosta, 1998;Crosta y Frattini, 2003). Collins y Znidarcic (2004) proponen dos mecanismos de falla diferentes para deslizamientos detonados por lluvias.…”

Section: Introductionunclassified

Influencia De La Lluvia Antecedente Y La Conductividad Hidráulica en La Ocurrencia De Deslizamientos Detonados Por Lluvias Utilizando El Modelo Shia_landslide

Giraldo

Upegui

Carvajal

2017

reveia

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RESUMENLas pérdidas económicas y humanas por movimientos en masa ocurren cada año en todo el mundo; sin embargo el impacto varía considerablemente debido a las condiciones geológicas locales y vulnerabilidad socioeconómica. Aunque la ocurrencia de movimientos en masa ha golpeado Los Andes colombianos, pocos estudios que consideren la lluvia como factor detonante se han realizado. SHIA_Landslide (Simulación Hidrológica Abierta para deslizamientos detonados por lluvia) es un modelo conceptual y de base física para analizar los procesos de deslizamientos superficiales mediante la incorporación de un modelo hidrológico de tanques y distribuido que incluye el almacenamiento de agua en el suelo, acoplado con un análisis clásico de estabilidad de talud infinito en condiciones saturadas. En este trabajo se evalúa la influencia de la lluvia antecedente y conductividad hidráulica de los deslizamientos detonados por lluvias utilizando el modelo SHIA_Landslide. Los resultados obtenidos en este estudio son similares a los obtenidos por diferentes autores en la literatura. Los suelos con altos valores de conductividad solo necesitan lluvias cortas e intensas para fallar, y las condiciones de lluvia antecedentes no juegan un papel importante para este tipo de suelos. PALABRAS CLAVE:Modelos físicos; deslizamientos detonados por lluvias; SHIA_Landslide. INFLUENCES OF ANTECEDENT RAINFALL AND HYDRAULIC CONDUCTIVITY ON LANDSLIDES TRIGGERED BY RAINFALL OCCURRENCE USING THE MODEL SHIA_LANDSLIDE ABSTRACTHuman and economic losses generated by landslides occur every year in all countries; however, the impact of landslides varies considerably according to local geological conditions and socio-economic vulnerability. AlthoughRevista EIA, ISSN 1794-1237 / Año XIII / Volumen 13 / Edición N.26 / Julio-Diciembre 2016 / pp. 31-46 Publicación semestral de carácter técnico-científico / Universidad EIA, Envigado (Colombia)

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“…4(b) will be smaller than practical field due to the restraint function on deformation and further weakening effect on hydro-fluctuation belt from reservoir water pressure. In 2017, the safety factor will suddenly increase for the weakening of hydro-fluctuation belt leading changes in the failure mode of landslide [12]. The slip plane will be almost parallel to the lower branch of shale in 2026, different from that at 145 m water level.…”

Section: Deduction Of Typical Slope Stability and Failure Modes Over mentioning

confidence: 99%

Long-term stability calculation of reservoir bank slope considering water-rock interaction

2017

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Preliminary communicationEarly warning and forecast have always been the key points for landslide research because the disaster caused by landslide leads to enormous life and property loss. This article applies the transformed degradation results of rock to rock mass to calculate the stability and failure mode changes of landslide over time, and to guide engineering through experiment based on hydro-fluctuation belt water-rock interaction of Three Gorges Reservoir area. The results showed that until the rock mass degrades to a certain extent, the sliding zone export gets rise, the slip plane moves to surface, the back edge crack surface gets down, and the sliding mass gradually narrows down. As the ability of hydro-fluctuation belt to resist upper rock mass load reduces, the hydrofluctuation belt collapses at the first, and then causes the back edge crack resulting in huge amount of rock mass slip. The contribution of each parameter in different stratum to landslide stability is studied through sensitivity analysis. Based on this, the comprehensive strength parameter can be evaluated and calculated combined with continuous deterioration of hydro-fluctuation belt. The comprehensive strength parameter can reflect comprehensive disaster resist capacity of landslide. The research results provide a reference for actual project, and the research methods provide a new way for landslide early warning and forecast.Keywords: comprehensive strength; deteriorating rule; failure mode; reservoir bank slope; stability analysis; water-rock interaction Proračun dugoročne stabilnosti nagiba nasipa akumulacije s obzirom na interakciju voda-stijenaPrethodno priopćenje Rano upozorenje i prognoza oduvijek su ključne točke u istraživanju klizišta jer katastrofa koju izaziva klizište rezultira ogromnim gubitkom života i imetka. U radu se transformirani rezultati degradacije mase jedne stijene u odnosu na drugu primjenjuju u izračunu promjena stanja stabilnosti i propadanja klizišta tijekom vremena te kao vodič kroz eksperiment zasnovan na interakciji voda-stijena hidro fluktuacijskog pojasa područja akumulacije Three Gorges. Rezultati su pokazali da dok stijenska masa ne degradira do određene mjere, područje klizišta se povećava, klizna površina se kreće ka površini, spušta se napukla površina stražnjeg ruba i masa klizišta se postepeno sužava. Budući da se sposobnost hidro-fluktuacijskog pojasa da se odupre težini gornje stijenske mase smanjuje, hidro-fluktuacijski pojas se najprije urušava, a zatim dovodi do pucanja stražnjeg ruba što rezultira klizanjem velike količine stijenske mase. Doprinos stabilnosti klizišta svakog parametra u raznim slojevima proučava se analizom senzitivnosti. Na temelju toga parametar čvrstoće se može procijeniti i izračunati u kombinaciji s trajnim padom kvalitete hidro-fluktuacijskog pojasa. Parametar potpune čvrstoće može odražavati uključenu sposobnost klizišta da se odupre katastrofi. Rezultati istraživanja upućuju na postojeći projekt, a metode istraživanja predstavljaju novi način za rano upozorenje ...

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The determination of statistical and deterministic hydrological landslide-triggering thresholds

Cited by 250 publications

References 15 publications

Rainfall intensity–duration conditions for mass movements in Taiwan

Rainfall intensity–duration conditions for mass movements in Taiwan

Influencia De La Lluvia Antecedente Y La Conductividad Hidráulica en La Ocurrencia De Deslizamientos Detonados Por Lluvias Utilizando El Modelo Shia_landslide

Long-term stability calculation of reservoir bank slope considering water-rock interaction

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