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Showing 1 to 20 of 50 for “"Debris flow"”.

  1. Rheological investigations of debris flow materials

    Phillips, Christopher J.Lincoln College, University of Canterbury1988

    … and used to test the behaviour of coarse grained debris flow materials. A 1/5 scale model was also constructed and used to test fluid-only and grain-fluid mixtures. The 30° inverted cone-and-plate viscometric system produced results comparable to those obtained from more standard viscometric …

    lincoln Repository record

  2. Laboratory Debris Flow Experiments: A Study of Erosion

    Maki, Laura2018

    … on grain size distribution in experimental debris flows and erodible beds. We systematically and independently varied the composition of each the supply and erodible bed material and the flume inclination angle, ϕ. Then, we demonstrate that there is a unique neutral angle, ϕN (the angle at …

    umn Repository record

  3. A debris flow chronology and analysis of controls on debris flow occurrence in the Upper Colorado River valley, Rocky Mountain National Park, CO

    Grimsley, Kyle J., author, Rathburn, Sara, advisor, Wohl, Ellen, advisor, Bledsoe, Brian, committee memberColorado State University. Libraries2012

    The role of debris flows along the Upper Colorado River was recently highlighted when the Grand Ditch, a 19th-century water-conveyance ditch, overtopped from snowmelt in 2003 and triggered a large debris flow along Lulu Creek, a tributary of the Colorado. Historical aerial photographs indicate that …

    colostate Repository record

  4. FUNZIONE DEL BOSCO NELLA FASE DI ARRESTO DEI DEBRIS FLOW

    E. MorlottiUniversità degli Studi di Milano2010

    Debris flows, a flowing mixture of sediments, water, air and other materials, are one of the most destructive events in mountain areas: damaged buildings, interrupted infrastructures, fatalities are only some examples of their effects . In Northern Italy, for example, 36% of fatality events in the …

    milano Repository record

  5. Topographic and material controls on the Scottish debris flow geohazard

    Milne, Fraser DaltonUniversity of Dundee2008

    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 …

    dundee Repository record

  6. Debris Flow Susceptibility Map for Mount Rainier, Washington Based on Debris Flow Initiation Zone Characteristics from the November, 2006 Climate Event in the Cascade Mountains

    Lindsey, Kassandra

    portland-state Repository record

  7. Post-Wildfire Debris Flow Susceptibility and Preconditioning Factors in the Central Okanagan

    Thiel, MichaelGraduate Studies2026

    Debris flows are a common hazard in British Columbia, but studies on their occurrence in the temperate continental regions of the province are primarily limited to anthropogenic and specific large events. We document 197 debris flows in and around the Regional District of Central Okanagan and the …

    calgary Repository record

  8. Two-phase modelling of debris flow over composite topography: theoretical and numerical aspects

    Zugliani, DanielUniversità degli studi di Trento2015

    … fans. Here, when intense rainfall occurs, debris flow or hyper-concentrated flow events can produce serious problems to the population with possible casualties. On the other hand, the majority of these problems could be overcome with accurate hazard mapping, disaster prevention planning and …

    trento Repository record

  9. Evaluation and validation of multiple predictive models applied to post-wildfire debris-flow hazards

    Negri, Jacquelyn A.Colorado School of Mines. Arthur Lakes Library2016

    … a need for accurate prediction of landslides and debris-flow hazards. Statistical methods are frequently used to rapidly assess landslide and debris-flow hazards for emergency planning and risk assessment. The U.S. Geological Survey is working to improve empirical logistic regression models for …

    colo-mines Repository record

  10. Evaluation of the effectiveness of erosion control treatments after wildfire in debris-flow prone areas, An

    deWolfe, Victor G., IIIColorado School of Mines. Arthur Lakes Library2006

    Includes bibliographical references (pages 163-173).

    colo-mines Repository record

  11. Modeling hydrologic processes associated with soil saturation and debris flow initiation during the September 2013 storm, Colorado Front Range

    Timilsina, Sujana, author, Niemann, Jeffrey D., advisor, Rathburn, Sara L., committee member, Nelson, Peter A., committee memberColorado State University. Libraries2019

    … during September 2013 produced more than 1,100 debris flows in the Colorado Front Range, about 78% of which occurred on south-facing slopes (SFS). A few previously-published soil moisture observations suggest that SFS were wetter than north-facing slopes (NFS) during the event, which would …

    colostate Repository record

  12. CURRENT AND FUTURE GLOBAL DEBRIS FLOW SUSCEPTIBILITY, HUMAN VULNERABILITY, AND THE IMPACT OF SPATIAL DATA UNCERTAINTY ON SUSCEPTIBILITY MODELING

    Fubelli, Giandomenico, Kurilla, Laurie JayneUniversità degli Studi di Torino2022

    unito Repository record

  13. Analyzing the effects of vertical acceleration and deceleration in multi-phase, debris-flow sediment-column experiments / by Christine Marie Williams.

    Williams, Christine Marie

    mtu Repository record

  14. Remote estimation of grain size distribution and simulating grain size effects on debris-flow rheology and post-fire variability of transport by dry ravel

    Jacobson, Hayden LeeColorado School of Mines. Arthur Lakes Library2024

    … scale of sediment transport by dry ravel and debris flows. Variability in erosion rates and the grain size distribution of material delivered to channels has been observed due to an increase in the annual areal extent of wildfire in the Western United States. As these changes modify …

    colo-mines Repository record

  15. Recovery From and Effects of a Catastrophic Flood and Debris Flow on the Brook Trout (<i>Salvelinus fontinalis</i>) Population and Instream Habitat of the Staunton River, Shenandoah National Park, VA

    Roghair, Craig N.Virginia Tech2000

    … Park, VA. In June 1995, a catastrophic flood and debris flow altered the instream habitat and <i>Salvelinus fontinalis</i> population of the Staunton River. The debris flow scoured the streambed, deposited new substrate materials, removed trees from the riparian zone, and eliminated fish from a …

    vt Repository record

  16. Sediment in forested and logged gullies, coastal British Columbia

    Millard, Thomas H.University of British Columbia1993

    … sediment storage and transfers. Both fluvial and debris flow transport of sediment occur in gullies, and the amount of fluvial transport of sediment which occurs will affect the magnitude of a subsequent debris flow. Coarse woody debris (CWD) may affect the storage and transfer of sediment in the …

    ubc Repository record

  17. The sedimentology of coarse grained hyperconcentrated flow deposits within modern and ancient volcaniclastic and alluvial fan sequences

    MacFadyen, Colin Crawford JosephUniversity of Hull1989

    … U. S. A. in 1984, triggered the formation of a debris flow in the headwaters of the North Fork Toutle River. As the debris flow progressed downstream it transformed through the incorporation of water and the loss of sediment and within 34 kilometres became a muddy flood. The deposits produced by …

    hull Repository record

  18. Debris flows on Earth and Mars

    Conway, SusanThe Open University2010

    This thesis explores the morphology of debris flows and their role in shaping planetary surfaces. The primary objective is to assess the scale of the present martian near-surface water budget by studying recent gullies visually similar to water-carved gullies on Earth. The potential involvement of …

    the-open-u Repository record

  19. Kinematics and Kinetics of Granular Mixture: Experimental and Numerical Studies

    Zhang, JiafengUniversity of Illinois at Urbana-Champaign2015

    … forces in the solid-like bulk and the fluid-like flow are investigated for different mixtures---for all cases, the probability distribution function of the forces decays exponentially, though the exponent is mixture-dependent. Finally, both kinematics and kinetics of granular materials are …

    uiuc Repository record

  20. Оценка и снижение экологической опасности отвалов горного производства в Новороссийской промышленной агломерации

    Alekseenko, AlexeySaint Petersburg Mining University

    … emissions, erosion and possible occurrence of a debris-flow disaster. Having high sorption capacity, dust accumulates pollutants contained in the atmospheric air and subsequently precipitates on the topsoil. Soil and plant sampling and chemical analysis (> 200 specimens) revealed the geochemical …

    qucosa-diss

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