Journal ArticleDOI
Field observations of a debris flow event in the Dolomites
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TLDR
A debris flow event occurred in June 1997 in the Dolomites (Eastern Alps, Italy) and was directly observed in the field and recorded by a video camera near its initiation area as discussed by the authors.About:
This article is published in Geomorphology.The article was published on 1999-09-01. It has received 217 citations till now. The article focuses on the topics: Debris flow & Open-channel flow.read more
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Positive feedback and momentum growth during debris-flow entrainment of wet bed sediment
Richard M. Iverson,Mark E. Reid,Matthew Logan,Richard G. LaHusen,Jonathan W. Godt,Julia P. Griswold +5 more
TL;DR: In this paper, the authors use data from large-scale experiments to assess the entrainment of bed material by debris flows and find that entrainments are accompanied by increased flow momentum and speed only if large positive pore pressures develop in wet bed sediments as the sediments are overridden by debris flow.
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Valley incision by debris flows: Evidence of a topographic signature
TL;DR: In this paper, the authors used both contour maps and laser altimetry to find that the stream power law rarely extends to slopes greater than ∼0.03 to 0.10, values below which debris flows rarely travel.
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Plasticity and geophysical flows: A review
TL;DR: In this article, a review of the use of the concept of plasticity in geophysical fluid dynamics is presented, focusing on the role of pore pressure and friction in the bulk dynamics.
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Field observations of basal forces and fluid pore pressure in a debris flow
TL;DR: In this paper, the authors describe field measurements of normal and shear stresses, and fluid pore pressure for a debris flow, and show that excess porefluid pressures are long lived in debris flows and therefore contribute to their unusual mobility.
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Initiation conditions for debris flows generated by runoff at Chalk Cliffs, central Colorado
TL;DR: In this article, the initiation conditions for six debris flows between May 2004 and July 2006 in a 0.3 km2 drainage basin at Chalk Cliffs; a band of hydrothermally-altered quartz monzonite in central Colorado was monitored.
References
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The physics of debris flows
TL;DR: In this paper, a simple model that satisfies most of these criteria uses depth-averaged equations of motion patterned after those of the Savage-Hutter theory for gravity-driven flow of dry granular masses but generalized to include the effects of viscous pore fluid with varying pressure.
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Debris-flow mobilization from landslides
TL;DR: In this article, a review emphasizes models in which debris behavior evolves in response to changing pore pressures and granular temperatures, and quantifies how pore pressure and temperature can influence the behavior of debris flows.
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Rainfall Thresholds for the Initiation of Debris Flows at La Honda, California
TL;DR: In this article, a simple numerical model, based on the physical analogy of a leaky barrel, can simulate significant features of the interaction between rainfall and shallow-hillslope pore pressures.
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Debris flows and debris torrents in the Southern Canadian Cordillera
TL;DR: In Canada, debris torrents (also referred to as channelized debris flows) occur in parts of British Columbia, Alberta, and the Yukon as discussed by the authors and at least 17 deaths and an estimated $100 million of damage to b...
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Open‐Channel Flow of Bingham Fluids: Applications in Debris‐Flow Research
TL;DR: The results of a numerical simulation of open-channel flow of Bingham fluids provide improved capabilities for analyzing muddy debris flows and their depositis, and for routing debris flows as discussed by the authors.