Colorado School of Mines
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Recent Submissions
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Pikes Peak minerals : beyond amazonite and smoky quartz ; Part 1 : pegmatites
Ed Raines, a geologist, mineralogist, and mining historian, discusses the Pikes Peak batholith, explaining crystal growth and geologic processes responsible for the formation of pegmatites and other minerals in the Pikes ... -
Numerical investigation of particle size segregation in saturated granular flows using CFD-DEM coupling approach
Particle size segregation is a common feature in debris-flow deposits and is assumed to develop in a similar way as in dry granular flows where fluid forces are neglected. Solid-fluid coupling however is a defining feature ... -
Erosion by experimental debris flows : particle size effects
The mobilization of surface material by particle-laden flows involves phenomenology that cross multiple scales: particle-scale interactions and mesoscopic stresses have significant implications for landscape evolution and ... -
How does particle-size segregation affect the fluidity of multi-granular debris flows?
It is essential to consider the fluidity of a debris-flow front when calculating its impact. Here, we flume-tested monogranular and bigranular debris flows, and compared the results to those of numerical simulations. We ... -
Valid debris-flow models must avoid hot starts
Debris-flow experiments and models commonly use “hot-start” initial conditions in which downslope motion begins when a large force imbalance is abruptly imposed. By contrast, initiation of natural debris flows almost ... -
Role of topography on the volume of material eroded by debris flows, The
Prediction of sediment volume of debris flows is the most important factor for designing debris-flow control structures or estimating debris-flow prone area. It has been considered that debris-flow volume may increase due ... -
Numerical investigation of deposition mechanism of submarine debris flow
Submarine debris flow can damage oil and gas transport pipelines with potentially adverse consequences to the environment and to the industrial activity itself. The deposition process of submarine debris flow, which is ... -
Compressibility of solid phase of debris flow and erosion rate
The change in sediment concentration of debris flow causes erosion and sedimentation of the solid phase of debris flows. Moreover, the changing affects the mobility of the flow. Therefore, knowledge of the mechanism of the ... -
Commonalities between debris flows and flow failures
Debris flow and flow failure are terms used to describe large displacement slope failures. The initiation or triggering often differs due to the nature and state of the material, but once triggered these two failure ... -
Soil characteristics of long-traveling landslides and a hybrid model to predict travel distance
When landslides liquefy and sediment movement takes on characteristics of a debris flow, travel distance increases, expanding the range of potential damage. Clarifying the liquefaction mechanism for such phenomena and ... -
Research on the movable solid materials under seepage flow effect in debris flow source area, The
Solid materials distributed on the surface of watershed transform to debris flow under seepage flow effect is one of the most common disaster type in the mountainous area, especially in the Longmen Fault regions, China. ... -
Overcoming barriers to progress in seismic monitoring and characterization of debris flows and lahars
Debris flows generate seismic signals that contain valuable information about events as they unfold. Though seismic waves have been used for along-channel debris-flow and lahar monitoring systems for decades, it has proven ... -
Topographic change detection at Chalk Cliffs, Colorado, USA, using airborne lidar and UAS-based Structure-from-Motion photogrammetry
The Chalk Cliffs debris-flow site is a small headwater catchment incised into highly fractured and hydrothermally altered quartz monzonite in a semiarid climate. Over half of the extremely steep basin is exposed bedrock. ... -
Forecasting and seismic detection of debris flows in pro-glacial rivers at Mount Rainier National Park, Washington, USA
The glaciated Mount Rainier volcano in Southwestern Washington State (USA) has a rich history of outburst floods and debris flows that have adversely impacted infrastructure at Mount Rainier National Park in the 20th and ... -
Deciphering sediment dynamics in a debris flow catchment : insights from instrumental monitoring and high-resolution topography
In mountainous catchments, the quantification of sediment yield is of paramount relevance for land-use planning and design of sediment control structures. However, deciphering the contribution of the different sediment ... -
Examining the impact force of debris flow in a check dam from small-flume experiments
Debris flow is one of the most hazardous disasters in mountain regions of Korea. Rainfall-induced debris flows have occurred more frequently during past decades due to climate changes. Especially, its threat on many lives ... -
Vibrational characteristics of debris flow in Taiwan, The
Debris flows have become a common disaster in Taiwan in recent years since the impacts of extreme weathers has been aggravated. To protect people from the debris-flow disasters, a monitoring and warning system was developed ... -
Monitoring and modeling of debris-flow surges at the Lattenbach creek, Austria
Debris-flow events are often comprised by a sequence of surges, sometimes termed roll waves. The reason for this surging behavior is still a matter of debate. Explanations include the growth of hydraulic instabilities, ... -
Monitoring of rainfall and soil moisture at the Rebaixader catchment (Central Pyrenees)
The instrumental monitoring of torrential catchments is a fundamental research task and provides necessary information to improve our understanding on the mechanisms of debris flows. While most monitoring sites include ...
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