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Dissertations / Theses on the topic 'Landslide and debris flow'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Paudel, Bhuwani Prasad. "GIS-based Assessment of Debris Flow Susceptibility and Hazard in Mountainous Regions of Nepal." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/38817.

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Rainfall-induced landslides that change into debris flows and travel large distances are one of the treacherous natural calamities that can occur in mountainous areas, particularly in Nepal’s mountains. Debris flow was the second highest cause of human death in Nepal after epidemics between 1971 and 2016. Because debris flow is common in mountainous regions, its prediction and remedial measures through land use plans are important factors to consider for saving lives and properties. The spatial distribution of the initial landslides that change into debris flow, on a watershed scale, is still

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2

Awal, Ripendra. "Study on Landslide Dam Failure Due to Sliding and Overtopping." 京都大学 (Kyoto University), 2008. http://hdl.handle.net/2433/66199.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第14136号<br>工博第2970号<br>新制||工||1441(附属図書館)<br>26442<br>UT51-2008-N453<br>京都大学大学院工学研究科社会基盤工学専攻<br>(主査)教授中川一, 教授関口秀雄, 教授藤田正治<br>学位規則第4条第1項該当

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Zhao, Tao. "Investigation of landslide-induced debris flows by the DEM and CFD." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:316cb3fc-dfc6-4e5a-bc0d-298e298c9c5b.

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In recent years, the increasing impacts of landslide hazards on human lives and lifeline facilities worldwide has advanced the necessity to find out both economically acceptable and useful techniques to predict the occurrence and destructive power of landslides. Though many projects exist to attain this goal, the current investigation set out to establish an understanding of the initiation and propagation mechanisms of landslides via numerical simulations, so that mitigation strategies to reduce the long-term losses from landslide hazards can be made. In this research, the Discrete Element Met

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4

McGuire, Luke A., Francis K. Rengers, Jason W. Kean, et al. "Elucidating the role of vegetation in the initiation of rainfall-induced shallow landslides: Insights from an extreme rainfall event in the Colorado Front Range." AMER GEOPHYSICAL UNION, 2016. http://hdl.handle.net/10150/621986.

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More than 1100 debris flows were mobilized from shallow landslides during a rainstorm from 9 to 13 September 2013 in the Colorado Front Range, with the vast majority initiating on sparsely vegetated, south facing terrain. To investigate the physical processes responsible for the observed aspect control, we made measurements of soil properties on a densely forested north facing hillslope and a grassland-dominated south facing hillslope in the Colorado Front Range and performed numerical modeling of transient changes in soil pore water pressure throughout the rainstorm. Using the numerical model

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5

Wishart, Jeremy Scott. "Overtopping Breaching of Rock-Avalanche Dams." Thesis, University of Canterbury. Civil Engineering, 2007. http://hdl.handle.net/10092/1193.

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River blockages formed by rock avalanches appear to pose a higher hazard potential than other landslide dams, given the extreme run-out distances and volumes of rock avalanche deposits. Recent research has identified rock avalanche deposits to have internal sedimentology consisting of a coarse surficial material (carapace) and a finer fragmented interior (body) potentially of critical importance to rock-avalanche dam stability. Physical scale modelling of overtopping failure and breach development in rock avalanche dams was used to quantify the influence of this sedimentology on critical breac

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6

Peres, David Johnny. "The hydrologic control on shallow landslide triggering: empirical and monte carlo pysically-based approaches." Doctoral thesis, Università di Catania, 2013. http://hdl.handle.net/10761/1387.

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In the dissertation, a Monte Carlo approach, that combines stochastic and deterministic modeling approaches, is used to analyze the hydrological control on shallow landslide triggering. In particular, an integrated stochastic rainfall and deterministic landslide simulator has been developed for the purpose. The simulator is composed by the following components: (i) a seasonal Neyman-Scott Rectangular Pulses (NRSP) model to generate synthetic hourly point rainfall data; (ii) a module for rainfall event identification and separation from dry intervals; (iii) the Transient Rainfall Infiltratio

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7

Festa, Davide. "Debris flow susceptibility mapping for initiation areas at medium scale: a case study in Western Norway." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18141/.

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In recent years, rapid mass movements such as debris flow and debris avalanches resulted in a significant impact on Norwegian society and economy. The need for dispelling the uncertainty inherent in landslide risk assessment has encouraged the development of hazard and susceptibility maps. Different statistically-based modelling methods, in combination with geographic information systems (GIS), have been extensively used to ascertain landslide susceptibility in quantitative terms. This thesis proposes a bivariate statistical method (Weights of Evidence) for assessing the spatial pronenes

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8

Milne, Fraser Dalton. "Topographic and material controls on the Scottish debris flow geohazard." Thesis, University of Dundee, 2008. https://discovery.dundee.ac.uk/en/studentTheses/eb4a6b03-8024-4818-8e92-ce1fd3c77209.

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Debris flows can be considered the most significant geological hazard in areas of high relief in Scotland having impacted upon slope foot infrastructure several times in recent years. The potency of this geohazard is anticipated to increase over the coming decades due to a climatologically enforced upturn in debris flow frequency. In thisresearch material and topographic controls on debris flow activity are investigated using a combination of field and laboratory based analysis of debris flows at six study sites across upland Scotland. Centrifuge modelling is also used to simulate theinitiatio

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9

Palau, Berastegui Rosa Maria. "Landslide and debris flow warning at regional scale. A real-time system using susceptibility mapping, radar rainfall and hydrometeorological thresholds." Doctoral thesis, Universitat Politècnica de Catalunya, 2021. http://hdl.handle.net/10803/672681.

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Rainfall triggered shallow slides and debris flows constitute a significant hazard that causes substantial economic losses and fatalities worldwide. Regional-scale risk mitigation for these processes is challenging. Therefore, landslide early warning systems (LEWS) are a helpful tool to depict the time and location of possible landslide events so that the hazardous situation can be managed more effectively. The main objective of this thesis is to set up a regional-scale LEWS that works in real-time over Catalonia (NE Spain). The developed warning system combines in real-time susceptibility in

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10

BLAHUT, JAN. "Debris flow hazard and risk analysis at medium and local scale." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2010. http://hdl.handle.net/10281/10914.

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Increased population, its wealth and activities lead to increased risk from landslide hazards in the mountain areas. The presented study deal with the analysis of debris flow hazard and risk at medium (regional) and local (site-specific) scale. Study took place in part of Valtellina Valley in Italian Central Alps. The first part of the study presents information about landslide hazard, risk and debris flow processes. It also shows historical information about natural disasters in the study area of Mountain Consortium of Municipalities of Valtellina di Tirano together with the results from a g

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MARTINELLO, CHIARA. "Improving statistical methodologies for landslide susceptibility modelling at regional and basin scale. Applications in the Sicilian and Salvadoran territory." Doctoral thesis, Università degli Studi di Palermo, 2022. https://hdl.handle.net/10447/561552.

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12

Rudd, Lawrence P. "Using AVIRIS Hyperspectral Imagery to Study the Role of Clay Mineralogy in Colorado Plateau Debris-Flow Initiation." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1339%5F1%5Fm.pdf&type=application/pdf.

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13

MARCHELLI, MADDALENA. "Debris flow interaction with open rigid barriers A DEM-LBM approach for trapping efficiency and impact force analysis." Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2702811.

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Debris flow is a dangerous landslide phenomenon occurring after intense rainfall in mountainous regions. It can be defined as a very rapid flow of heterogeneous material of different grain sizes with high water content. Due to its multi-phase nature, in which solid, fluid and air continuously interact, debris flow is a complex phenomenon, difficult both to analyze and to simulate. Because of its rapidity and unpredictability, it can cause loss of lives and extended damages to environment and structures. Thus, efficient mitigation measures are often desirable. Due to the complexity of the ph

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14

Brezzi, Lorenzo. "Calibration strategies of a depth-integrated numerical model for the propagation of flow-like landslides." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3421799.

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Nowadays, the numerical models are important allies for the study of physical and natural phenomena. They become progressively more complicated because various differential equations are included to consider the different processes involved in a singular phenomenon. The number of parameters used to adapt the numerical results to the real measurements increase consequently. Among the huge quantity of natural phenomena studied, the landslides are definitely important and, among them, the flow-slides are a type, which actually have an increasing occurrence frequency because of the climate change

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Kritikos, Theodosios. "Geomorphic Hazard Analyses in Tectonically-Active Mountains: Application to the Western Southern Alps, New Zealand." Thesis, University of Canterbury. Geological Sciences, 2013. http://hdl.handle.net/10092/8978.

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On-going population growth and urbanization increasingly force people to occupy environments where natural processes intensely affect the landscape, by way of potentially hazardous natural events. Tectonic plate boundaries, active volcanic regions and rapidly uplifting mountain ranges are prominent examples of geomorphically hazardous areas which today accommodate some of the world’s largest cities. These areas are often affected by more than one hazard such as volcanic eruptions, earthquakes, landslides, tsunamis, floods, storms and wildfires, which frequently interact with each other increas

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Zhou, Gongdan. "The mechanisms of debris flow /." View abstract or full-text, 2010. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202010%20ZHOU.

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Schuerch, Peter. "Debris-flow erosion and deposition dynamics." Thesis, Durham University, 2011. http://etheses.dur.ac.uk/3395/.

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Debris flows are a major natural hazard in mountains world wide, because of their destructive potential. Prediction of occurrence, magnitude and travel distance is still a scientific challenge, and thus research into the mechanics of debris flows is still needed. Poor understanding of the processes of erosion and deposition are partly responsible for the difficulties in predicting debrisflow magnitude and travel distance. Even less is known about the long-term evolution of debrisflow fans because the sequential effects of debris-flow erosion and deposition in thousands of flows are poorly docu

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Whipple, Kelin X. "Debris flow fans : process and form /." Thesis, Connect to this title online; UW restricted, 1994. http://hdl.handle.net/1773/6710.

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COVIELLO, VELIO. "Debris flow seismic monitoring and warning." Doctoral thesis, Politecnico di Torino, 2015. http://hdl.handle.net/11583/2616887.

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Standardization of measurement procedures and performances are important goals in every field of science and are in general intensely pursued by scientists. Certain natural phenomena, however, present particularly difficult challenges in this regard and many efforts are still needed to actually reach standardization and systematic performance of measurements. Debris flows certainly belong to this latter category. Due to their low frequency of occurrence, their short duration and their sudden and abrupt nature they are extremely difficult to be measured. Only instrumented basins where debris fl

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Martinez, Cora E. "Eulerian-Lagrangian Two Phase Debris Flow Model." FIU Digital Commons, 2009. http://digitalcommons.fiu.edu/etd/138.

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The main objective of this work is to develop a quasi three-dimensional numerical model to simulate stony debris flows, considering a continuum fluid phase, composed by water and fine sediments, and a non-continuum phase including large particles, such as pebbles and boulders. Large particles are treated in a Lagrangian frame of reference using the Discrete Element Method, the fluid phase is based on the Eulerian approach, using the Finite Element Method to solve the depth-averaged Navier–Stokes equations in two horizontal dimensions. The particle’s equations of motion are in three dimensions.

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Conterato, Leandro. "Uso do programa Ramms na modelagem de corridas de detritos e previsão de áreas atingidas : estudo do caso de quitite-papagaio." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/130132.

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Corrida de detritos é um tipo de movimento que se caracteriza por uma massa fluída bastante densa, constituída por lama, água, rochas e outros detritos, capaz de atingir elevadas velocidades e possuir elevado potencial de destruição. Essas características colocam esse tipo de movimento entre os mais catastróficos desastres naturais, com grande potencial de destruição, principalmente quando ocorre em áreas urbanizadas, onde os prejuízos e perdas podem ser enormes. Como apoio para definição de medidas de prevenção ou mitigação desses desastres, as ferramentas computacionais para modelagem desses

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Gibson, Andrew David. "Spectral properties and characterization of debris from the Black Ven landslide complex, Dorset, England." Thesis, University of Portsmouth, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430657.

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23

Randall, James Robert. "Characterization of the Red Bluff Landslide, Greater Cascade Landslide Complex, Columbia River Gorge, Washington." PDXScholar, 2012. https://pdxscholar.library.pdx.edu/open_access_etds/898.

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Located in the Columbia River Gorge, The Red Bluff Landslide (18.8 km2) is one of four large landslides that make up the Cascade Landslide Complex. In its current form, the Red Bluff Landslide is a post-Missoula Flood feature made up of two components: an active upper lobe (8.6 km2) that is translational, creeping to the south at 25 cm/yr and spreading laterally to the east at 6 cm/yr over a semi-fixed portion (10.2 km2) of the Red Bluff Landslide area that has been "smoothed" by Missoula Floods. The upper active lobe is the landslide debris accumulated since Missoula Flood time (~15,000 yr. B

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Paleo, Cageao Paloma. "Fluid-particle interaction in geophysical flows : debris flow." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/27808/.

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Small scale laboratory experiments were conducted to study the dynamic mor- phology and rheological behaviour of fluid-particle mixtures, such as snout-body architecture, levee formation, deposition and particle segregation effects. Debris flows consist of an agitated mixture of rock and sediment saturated with water. They are mobilized under the influence of gravity from hill slopes and channels and can reach long run-out distance and have extremely destructive power. Better understanding of the mechanisms that govern these flows is required to assess and mitigate the hazard of debris flows a

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Lopes, Eymar Silva Sampaio. "Modelagem espacial dinâmica aplicada ao estudo de movimentos de massa em uma região da serra do mar paulista, na escala de 1:10.000 /." Rio Claro : [s.n.], 2006. http://hdl.handle.net/11449/102962.

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Orientador: Paulina Setti Riedel<br>Banca: Nelson Ferreira Fernandes<br>Banca: Antonio Miguel Vieira Monteiro<br>Banca: Ana Paula Dutra Aguiar<br>Banca: Leandro Eugenio da Silva Cerri<br>Resumo: Um modelo dinamico com caracteristicas friccionais, que utiliza como parametros basicos o angulo de atrito interno do material ( int Ó ) e basal ( bed Ó ) com a superficie onde ocorre o movimento, foi calibrado e aplicado com objetivo de simular as mesmas condicoes em que ocorreram corridas de massa nos anos de 1985, 1994 e 1999, em tres bacias da Serra do Mar, na regiao de Cubatao (SP-Brasil), na esca

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Martin, Jennifer A. "Debris-Flow Activity in Canyon of Lodore, Colorado: Implications for Debris-Fan Formation and Evolution." DigitalCommons@USU, 2000. https://digitalcommons.usu.edu/etd/6785.

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Large-scale characteristics of Ladore Canyon debris fans are dependent upon the bedrock and lithology of the mainstem and tributary canyons. The largest fans occur in the widest section of the mainstem canyon, which typically correlates with the location of large faults. The steepest fans are found at the mouths of tributaries where cliffs are formed by resistant lithologies. Smaller-scale fan characteristics are dependent upon the magnitude and frequency of events from the respective drainage basin, which is controlled primarily by climate. Three distinct deposit ages ( oldest, intermediate,

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Kailey, Patrick. "Debris flows in New Zealand Alpine Catchments." Thesis, University of Canterbury. Department of Civil and Natural Resources Engineering, 2013. http://hdl.handle.net/10092/7769.

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This research aims to improve our knowledge of debris flow occurrence and behaviour in New Zealand. Detailed field data collected in four debris flow prone areas in New Zealand are presented and compared. The travel distance of these events is then modelled with an empiricalstatistical model, UBCDflow, and an analytical, “equivalent fluid” continuum model DAN-W. While field studies are useful, they are often not linked to the underlying mechanics of debris flow motion or compared with the behavior of small scale flows due to the inherent complexity and unknown boundary conditions in field scal

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Chiang, Shou-Hao, and 姜壽浩. "Modeling Multi-Hazard: Landslide Initiation and Debris Flow." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/50882099381980900885.

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博士<br>國立臺灣大學<br>地理環境資源學研究所<br>98<br>Landslides are triggered by different causes including intense or prolonged rainfall. An efficient model for evaluating the hillslope hydrology is crucial to landslide prediction. Besides, not only landslides but also rainfall-induced debris flows also lead to devastations. Although many numerical models have been proposed to simulate the physical behavior of a specific debris flow event, current models have rarely incorporated regional landslides and debris flows into a single assessment framework. In addition, applicability of landslide model to watersheds

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Wang, Chao-Wen, and 王昭雯. "Study among Landslide Outbreak and Debris Flow Formation Mechanism." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/05182613274624202382.

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碩士<br>逢甲大學<br>水利工程所<br>93<br>This research investigates the problem about landslide near a stream by equilibrium mechanics theory and the soil water content. Then it discusses the mechanism of the soil block which transforms into debris flow when it slides into the stream. According to the result, when the slope is larger than , infiltration induced by rainfall then will cause the slope to breakdown. The relation between precipitation and slope failure can be explain as below. This equation displays the probable failure of slope in two conditions, one is the factor about the slope and the o

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Yang, Jen-Lung, and 楊鎮隆. "A Study of Landslide and Debris Flow Disaster Prevention Law." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/05592778691872756620.

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碩士<br>國立高雄大學<br>財經法律學系碩士班<br>103<br>Because of the special geographical features and climate, Taiwan is subject to frequent Landslide and Debris Flow disaster. In recent years, Extreme Weather changes very quickly in the world which makes Landslide and Debris Flow disaster to become worse and worse. In order to protect the right of basic constitutional right- life and property of people, we should build legal system of Landslide and Debris Flow disaster prevention. Taiwan’s current legal system of Landslide and Debris Flow disaster prevention is very complicated, so we could divide it into thr

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Lu, Chun-Hung, and 盧俊宏. "Quantitative Precipitation and Landslide Probability for Potential Debris Flow Analysis." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/03191133360087832403.

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碩士<br>國立交通大學<br>土木工程系所<br>97<br>Up to date, the method of analyzing potential debris flow is still based on the area of village. So, it often happened that the same rainfall information (same rainfall gauge) and alert value were used to analyze the potential debris flow creeks which may belong to neighboring different sub-watershed. Therefore, the rainfall observed by a single rainfall gauge may not indicate that the rainfall also occurred in neighboring watershed around the gauge. This study is performed based on concept of watershed and taking the stream as the basic unit to analyze potentia

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Chen, Yi-Chieh, and 陳宜傑. "Application of Resistivity Image Profile Method to Debris flow and Landslide." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/96205963129454022080.

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碩士<br>國立中央大學<br>應用地質研究所<br>92<br>The aim of this study is to investigate the resistivity responses in the Lisan landslide area and debris flow areas (i.e., Sei-Mo-Kong stream Beitou District of Taipei City, Jung-He village of Jinshan Township of Taipei county, Chen-Yu-Lan River of Nantou County and Tz-Na-Gu River of Yilan County etc.) using the resistivity image profiling (RIP) method. Referred to the resistivity of outcrops and drilling data, the resistivity characteristics of the layers both in Lisan landslide and debris flow sites can be recognized. Based on the RIP data collected from sur

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CHEN, Yu-Shiu, and 陳俞旭. "An Influence of Earthquake on the Occurrence of Landslide and Debris Flow." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/42858710342587999890.

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博士<br>國立成功大學<br>水利及海洋工程學系碩博士班<br>96<br>In Taiwan, both catastrophic earthquake and heavy rainfall are two triggering factors to cause landslides in mountainous area. The sediment materials caused serious debris flows in the subsequent typhoon season. Example for the Chi-Chi earthquake, this research discusses the influence of earthquake on the occurrence of landslide and debris flow, and analyzes the variation after the earthquake. The FORMOSAT-II satellite images are applied to analyze the landslide characteristics. Spatial correction, unconfidence area confirmation, and improper area modific

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Jin-Der, Chen, and 陳進德. "A study of rockfall protection metal net for landslide and debris flow." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/56415725668658714312.

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碩士<br>國立屏東科技大學<br>土木工程系所<br>98<br>As a results of proactive geological activities such as plate movements, and frequent natural hazards such as typhoons and earthquakes, mountain slopes of Taiwan have suffered seriously by the debris flows, landslides, and erosions damages. The study focuses on the application of slope metal mesh, energy dissipation type rockfall nets, and debris flow protection net to stable the highway slope in Taiwan. Test materials, energy dissipation type of rockfall net and slope metal mesh, were installed on August 12, 2007., and work well even suffered by heavy rainfal

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Syu, Ya-Fen, and 許雅芬. "A Study for Estimating Potential material quantity of the Landslide Type Debris Flow." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/85793287645873742886.

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Shih, Hung-Ju, and 施虹如. "The Topographical and Rainfall Characteristics of the Landslide-triggered Debris Flow in Laofou Village." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/93805929984336559923.

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碩士<br>國立中興大學<br>水土保持學系所<br>101<br>The heavy rainfall events with high intensity and long duration increased in the recent years in Taiwan, and the increasing heavy rainfall events also induced the complex disasters. The study focuses on the simulation of the landslide-triggered debris flow in Laofou Village in Pingtung County caused by Typhoon Namando during August 27 to 31, 2011. The study adopts the TRIGRS model to assess the landslide potential in the Laofou watershed, discusses the geomorphologic and rainfall characteristic of Laofou landslide, and uses FLO-2D to simulate the debris flow-i

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Lin, Hsin-Hao, and 林新皓. "Application of landslide potential and debris flow risk assessment on configuration of management strategies." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/17520312007428446393.

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碩士<br>逢甲大學<br>水利工程所<br>94<br>The major objective of this research is to integrate the landslide potential model and the debris flow risk assessment model with Geographic Information System and to apply the resulting operation procedures to the configuration of slope management strategies. The study area is the Song-He First Creek in the midstream of Ta-Chia River and it is one of the 1420 debris potential rivers issued by the Soil and Water Conservation Bureau in Taiwan. and The landslide potential model is based on the landslide outbreak model along with aerial photography to determine the p

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Wu, Chun-Yi, and 吳俊毅. "The efficiency of risk reduction programs for rainfall-induced landslide and debris-flow disasters." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/05121079936833531128.

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博士<br>國立中興大學<br>水土保持學系所<br>100<br>The purpose of this research is to establish the landslide risk analysis procedures by which the disaster risk distribution within the watershed was analyzed. Orderly, this research analyzed the landslide hazard, the vulnerability of elements at risk, and the resilience capacity of village to calculate the values of property risk, life risk and total risk possibly caused landslide disasters. First, the landslide hazard assessment included the landslide spatial probability, temporal probability and probability of landslide area. Eleven geomorphological factors

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Shiue, Tzu-Chi, and 薛祖淇. "Occurrence Model of Debris Flows Triggered by Riverbed Degradation and Lateral Landslide." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/38264042756976175561.

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碩士<br>逢甲大學<br>土木及水利工程研究所<br>89<br>Basing on landslide outbreak model and riverbank stability analysis, this paper infers the mechanism of landslide that triggers debris flow, and uses flume experiments to prove this theory. The study shows that debris flow triggered by riverbed degradation and lateral landslide occurrence model is different than the previous model neglecting riverbank influence, which only considers riverbed scouring. From data analysis, we conclude the below results: 1.The minimum sediment concentration of debris flow ( ) and critical channel slope ( ) are two majo

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Liao, Sen-Li, and 廖森立. "The Review and the Future Development of the Monitoring Technology of Roadway Landslide and Debris-Flow Hazards Mitigation." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/85471802920262904370.

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Guthrie, Richard. "The Occurrence and Behavior of Rainfall-Triggered Landslides in Coastal British Columbia." Thesis, 2009. http://hdl.handle.net/10012/4484.

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This thesis seeks to analyze the occurrence and behavior of rainfall-triggered landslides in coastal British Columbia. In particular, it focuses on the analysis of landslide temporal and spatial distributions occurrence and their magnitudes, and considers the major factors that influence regional landslide behavior. Implicit in the research is the understanding that the landscape of coastal BC is managed, and that landslides, in addition to occurring naturally may be caused by, and certainly impact, resources that are important to humankind. Underlying each chapter is the rationale that by

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IADANZA, CARLA. "Metodologie di analisi e definizione di soglie di eventi pluviometrici che hanno innescato colate rapide e frane superficiali in un'area dell'arco alpino nord-orientale." Doctoral thesis, 2015. http://hdl.handle.net/11573/918167.

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Debris flows and shallow landslides, due to the high velocity, in recent decades have caused the most damage in Italy both in terms of casualties that economic losses. The triggering is in almost all cases related to intense rainfall events. For these types of landslides one of the main risk mitigation measures is the adoption of early warning systems based on rainfall thresholds that identify the critical amount of precipitation for landslide initiation. The aim of this research is the development of objective, repeatable and exportable methodologies for the identification, analysis and chara

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Chuang, Mengru, and 莊孟儒. "Study on the Simulation of Debris Flow for a Watershed with High Landslide Rate – a Case Study of Xinkai Village in Southern Taiwan." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/92884464468001119679.

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碩士<br>華梵大學<br>環境與防災設計學系碩士班<br>100<br>Due to large landslides occurred in the upstream of watersheds to result debris-flow disasters from the attack of Typhoon Morakot in the Shinkai area in the southern Taiwan, in the paper, three watershed areas- Hongshuixian, Neighborhood 23 and Dafo are selected as our case study, and the FLO-2D model are used to work on the studies for debris-flow simulation. Firstly, basic data collections of the watershed areas, as well as the rheological property experiments on debris flows are conducted. Secondly, to study the inflow hydrographs that will trigger debri

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Shiu, Jin-tze, and 徐金澤. "A study of the correlation between landslides and debris flow in Hualien and Taitung district." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/96280003571829709241.

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碩士<br>國立成功大學<br>地球科學系碩博士班<br>97<br>In this study, by using the concept of stream order and in the platform of geographic information system (GIS), the influence of landslides intensity on the occurring of debris flows in the Hualien and the Taitung districts are study. Twelve FORMOSAT 2 images that covered eleven typhoon events from 2004 to 2008 are used to identify landslides and debris flows in the study area. In addition, the Digital Elevation Model (DEM) with 40-meter resolution is used to filter out and classify the gullies with different stream order. The study results show that 140、66、

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II, Victoriano Realino, and 瑞利諾. "The characteristics of landslides, sediment transportation, and debris flow of two watersheds along Tachia River, Taiwan." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/q4b6v7.

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碩士<br>國立中央大學<br>應用地質研究所<br>107<br>Earthquakes are one of the most destructive and dangerous of all natural phenomena as it could generate several fractures, cracks, and even co-seismic landslides that may cause havoc in mountainous regions. A number of debris flows during sequential rainfall mayalsooccurinanareawhichwasexposedtostronggroundshaking. Thisstudyfocuses on the sediment transportation and deposition evolution of watersheds with debris flow torrents,alongTachiaRiver. AerialphotoscoveringhazardssuchasChi-ChiEarthquake, Typhoon Toraji, Typhoon Mindulle, and Typhoon Aere, respectively,

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Zeng, Xun-Yuan, and 曾勛苑. "Applying Logistic Regression Method to Analyze the Effects of Landslide on Rainfall Threshold Value for Debris Flow Warning –Using the Watershed of Chenyoulan Stream as An Example." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/58277895047279183314.

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碩士<br>國立臺灣大學<br>生物環境系統工程學研究所<br>100<br>The main purpose of this study is to investigate the effects of landslides and other physiographic factors on the rainfall threshold value for debris flow warning and then to evaluate it. In Taiwan, the rainfall threshold value for debris flow warning has been used for years as a basis to announce debris flow warning and it is amended annually or after the event of great mass movement disasters. The site of this study was selected at Chenyoulan stream watershed. The statistics examines to landslide ratio, the average riverbed slope steepness , effective

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Chang, Lun-Hsien, and 張綸纖. "Applying Logistic Regression Method to Analyze the Effect of Landslide on Rainfall Threshold Value for Debris Flow Warning –Using the Site of Shenmu, Nantou as An Example." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/07633566208345171455.

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碩士<br>國立臺灣大學<br>生物環境系統工程學研究所<br>99<br>The main purpose of this study is to investigate the effects of landslides and other physiographic factors on the rainfall threshold value for debris flow warning and then to evaluate it. In Taiwan, the rainfall threshold value for debris flow warning has been used for years as a basis to announce debris flow warning and it is amended annually or after the event of great mass movement disasters. The site of this study was selected at Shen-mu, Nan-tou. The debris flow events occurred in the site were collected and the method of logistic regression was used

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Hsieh, Shen-Han, and 謝昇翰. "Shear Strength of an Unsaturated Landslide Debris." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/xj9dkv.

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碩士<br>國立臺北科技大學<br>土木與防災研究所<br>100<br>The expanding of transportation network because of rapid economic development has resulted in the need to cut and fill through the mountainous area on the island of Taiwan. During rainfall, water infiltrated into the soil and led to the accumulation of water at the toe of the slope. The process causes the shear strength of the unsaturated soil to decrease, which may then trigger the failure of the slope suddenly. On a sunny 25th April, 2010, a major landslide that resulted the death of four passing by drivers occurred at 3.1 km of the No. 3 Expressway. The

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Chang, Kuang-Tzung, and 張光宗. "Case study of debris flow - Tzunaku rill debris flow and Tunghsing mud flow." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/43645536350991226543.

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碩士<br>國立中央大學<br>應用地質研究所<br>83<br>Two cases of different type debris flows ( the case of debris flow is located in the Tzunaku rill in Ilan county and the case of mud flow in Tunghsing in Hualien county ) were chosen to compare the geology, topography, the property of debris flows and to estimate the velocity, debris discharge and deposition property of mud flow in Tunghsing. From airphoto interpretation, geologic servey and topographic servey, we understood the chan

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Shu-ChouChih and 周述芝. "The impact of Landslides on the occurences of Debris flows in Chi-San River." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/64255637456754342558.

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碩士<br>國立成功大學<br>地球科學系碩博士班<br>98<br>In this study, by using the concept of stream order and working in the platform of geographic information system (GIS) ,four periods of FORMOSAT 2 images taken from 2008 to 2009 that covered three typhoon events are used to identify landslides and debris flows in the Chishan River watershed. In the images taken after the Typhoon Kalmaegi in 2008, 727.25 hectares landslides have been recognized. Additionally, 566.07 hectares landslides are triggered by the Typhoon Sinlaku in 2008 and 3239.60 hectares landslides are induced by the Morakot in 2009. For debris fl

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