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The Bearing Capacity of Debris Flows
Debris flows are made of a cohesive muddy matrix in which large and heavy particles exist in suspension. To explain how these particles are maintained in suspension, several mechanisms...

Erodible Channel Models: State of the Art Review
This paper presents a review of existing modeling techniques, their physical and mathematical background, and applicabilities. Major areas of progress are outlined and difficulties are...

Armor Layer Evolution
This communication presents an analysis of celerity propagation for non-uniform materials. Based on the corresponding flow, sediment transpot and sorting/armoring equations, the celerity...

Channel-changing Processes on the Santa Cruz River, Pima County, Arizona, 1936-86
Lateral channel change on the mainly ephemeral Santa Cruz River, Pima County, Arizona, causes damage and has spawned costly efforts to control bank erosion. Aerial photographs, historical...

Predicting Stream Width and Bank Retreat
The width of streams is dependent on the flood flow discharge which varies from year to year, the bank material which varies from stream to stream and reach to reach, the sediment load...

Model of Deposition of Grains from Debris Flow
Rapid deposition of grains from debris flow occurs in a channel whose slope angle decreases abruptly. A model of the deposition is presented on the basis of experiments and theoretical...

Geomorphology and Sedimentology of a Valley Fan, Southern Utah
Sink Valley, located in semi-arid west-central Kane County, Utah, lies on an erosional surface of Cretaceous age Tropic Shale. The valley contains an example of a previously undocumented...

Predicting Alluvial-Fan Sediment-Water Slurry Characteristics and Behavior from Sedimentology and Stratigraphy of Past Deposits
Slurry characteristics can be predicted by a combination of field and laboratory analyses. Field observations are needed to determine deposit stratigraphy and to estimate the abundance...

Activation and Degeneration of Turbidity Currents
Flow properties of the front of a turbidity current are investigated using the two layers model which takes into account of pick up and deposition of sediment. The amount of pick up rate...

Resistance Consisting of Both Viscous Force and Dispersive Force
A set of specially designed experiments have been carried for studying the resistance of a flow consisting of water and both fine and coarse particles. The viscous force caused by fine...

Limit Concentration of Suspended Sediment
It is found from experiments that there is a limit on suspended sediment concentration. The limit concentration of uniform sediment varies with sediment diameter, and it is about 1000...

Sediment Transport Characteristics of Hyperconcentrated Flow with Suspended Load
In this paper, based on the analysis of the ovserved data, a set of theories is proposed of the transport of heper-concentrated sediment, the basic points of which are: (1) The hyperconcentrated...

A Mathematical Model of Erosion and Sedimentation of Hyperconcentrated Flow in Reservoirs
The motion of the flow with hyperconcentration has its unique law. In this paper, based on the analysis of the motion of the flow with hyperconcentration of sediment and the sediment transport...

A Study on Sediment Transportation in Debris Flow
By analysing the observation data of debris flows at the Jiangjia Ravine, Dongchuan, Yunnan Province, China in 1982-1986, this paper comprehensively and systematically describes the sediment...

Sediment Transport Models for Small Gullies in Loess Hill and Gully Regions
Three items are studied: the equation of the relation between discharge and sediment for small gullies derived by using the theory of river dynamics; the extension of the Nash theory of...

Estimating Sediment Delivery and Yield on Alluvial Fans
This paper summarizes the procedures used for computing the basinwide annual yields and single event sediment production for ephemeral channels located on an incised alluvial fan in Central...

Sediment Sources, Transport and Delivery to an Alluvial Fan, Caliente Creek, California
Sediment delivery to a proposed flood detention reservoir site in the medial region of the Caliente Creek alluvial fan is dependant on the magnitude and duration of flood flows. Because...

Erosion Processes in Upland Areas
After a soil particle is detached and entrained, it will be transported by the surface runoff. However, depending on the eroding and transport capacities of the surface runoff, some of...

Flood Control Improvements on Alluvial Fans
Floodplain management on alluvial fans has become an increasingly important issue with continued growth and urbanization in the southwest. The design of flood control facilities for new...

Task Committee on Transport Processes at the Interface of Water Column and Bottom Sediment
The Task Committee on Transport Processes at the Interface of Water Column and Bottom Sediment was formed on October 1, 1989 under the Technical Committee on Hydrologic Transport and Dispersion...

 

 

 

 

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