Search Results - "Abt, Steven R."

Comparison of Three Pebble Count Protocols (EMAP, PIBO, and SFT) in Two Mountain Gravel‐Bed Streams1 by Bunte, Kristin, Abt, Steven R., Potyondy, John P., Swingle, Kurt W.

“…:  Although the term ``pebble count'' is in widespread use, there is no standardized methodology used for the field application of this procedure. Each pebble…”
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Critical Shields values in coarse-bedded steep streams by Bunte, Kristin, Abt, Steven R., Swingle, Kurt W., Cenderelli, Dan A., Schneider, Johannes M.

“…Critical Shields values ( τc*) suitable for specific applications are back‐calculated from representative bed load samples in mountain streams and a flow…”
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Equilibrium Scour Downstream of Three-Dimensional Grade-Control Structures by Scurlock, S. Michael, Thornton, Christopher I, Abt, Steven R

“…To promote grade-control, bank stability, and fish habitat enhancement, three-dimensional structures installed within river channels are becoming increasingly…”
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Articulated Concrete Block Stability Assessment for Channelized Flow by Cox, Amanda L, Thornton, Christopher I, Abt, Steven R

“…AbstractA moment stability analysis method which computes a safety factor using shear stress and flow velocity was previously developed for assessing the…”
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Effective discharge in Rocky Mountain headwater streams by Bunte, Kristin, Abt, Steven R., Swingle, Kurt W., Cenderelli, Dan A.

“…•Two power functions describe flow frequency distributions in snowmelt regimes.•Scaling relations indicate gravel rating curve steepness in headwater…”
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Measurements of coarse particulate organic matter transport in steep mountain streams and estimates of decadal CPOM exports by Bunte, Kristin, Swingle, Kurt W., Turowski, Jens M., Abt, Steven R., Cenderelli, Daniel A.

“…•CPOM transport is fairly well measurable with bedload traps in wadeable streams.•Pronounced hysteresis requires intensive sampling for accurate estimating…”
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Predicting Peak Outflow from Breached Embankment Dams by Pierce, Michael W, Thornton, Christopher I, Abt, Steven R

“…From 1977 to 1995, a series of regression relations were developed to predict the peak discharge from breached embankment dams. In 2008, a study was conducted…”
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Effect of sampling time on measured gravel bed load transport rates in a coarse-bedded stream by Bunte, K, Abt, S.R

“…This study empirically quantified the effect of sampling time on measured transport rates and fitted rating curves based on results obtained from bed load…”
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Articulated Concrete Block Stability Assessment for Embankment-Overtopping Conditions by Cox, Amanda L, Thornton, Christopher I, Abt, Steven R

“…AbstractArticulated concrete block (ACB) revetment systems are widely used for channel lining and embankment protection. Current approaches for prediction of…”
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Quantification of Transverse In-Stream Structure Hydraulics by Michael Scurlock, S, Thornton, Christopher I, Baird, Drew C, Abt, Steven R

“…AbstractUndesired bank erosion and migration of channel bends has led to the development of transverse in-stream structures as a mitigation technique…”
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Bendway Weir Riprap Sizing Criteria by Abt, Steven R, Michael Scurlock, S, Thornton, Christopher I, Cox, Amanda L, Holste, Nathan J

“…AbstractBendway weirs are submerged, in-stream rock structures that redirect impinging flow away from outer-banks toward the center of a channel. Riprap weirs…”
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Enhanced Predictions for Peak Outflow from Breached Embankment Dams by Thornton, Christopher I, Pierce, Michael W, Abt, Steven R

“…A study was conducted to enhance the historic regression relations that predict the peak discharge from breached embankment dams. Forty-four dam breach case…”
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Evaluation of Overtopping Riprap Design Relationships by Abt, Steven R., Thornton, Christopher I., Scholl, Bryan A., Bender, Theodore R.

“…Rock riprap is one of the most widely used erosion control methods for protecting embankments, levees, spillways, and instream structures subjected to…”
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Enhanced Stone Sizing for Overtopping Flow by Thornton, Christopher I, Abt, Steven R, Scholl, Bryan N, Bender, Theodore R

“…AbstractRock riprap is one of the most widely used erosion control techniques for protecting embankments, levees, spillways, and in-stream structures subjected…”
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Measurement of Coarse Gravel and Cobble Transport Using Portable Bedload Traps by Bunte, Kristin, Abt, Steven R, Potyondy, John P, Ryan, Sandra E

“…Portable bedload traps (0.3 by 0.2 m opening) were developed for sampling coarse bedload transport in mountain gravel-bed rivers during wadable high flows. The…”
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Supercritical Flow Measurement Using a Large Parshall Flume by Cox, Amanda L, Thornton, Christopher I, Abt, Steven R

“…AbstractA full-prototype physical model was laboratory tested to determine a rating equation applicable to large Parshall flumes with supercritical flow. The…”
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One-Dimensional Modeling Techniques for Three-Dimensional Grade Control Structures by Michael Scurlock, S, Thornton, Christopher I, Abt, Steven R

“…AbstractGenerally constructed with materials from the proximal environment and promoting a more natural aesthetic within a stream, rock-weir grade control…”
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Comparison of Three Pebble Count Protocols (EMAP, PIBO, and SFT) in Two Mountain Gravel-Bed Streams by Bunte, Kristin, Abt, Steven R, Potyondy, John P, Swingle, Kurt W

“…Although the term ``pebble count'' is in widespread use, there is no standardized methodology used for the field application of this procedure. Each pebble…”
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Converging Stepped Spillways: Simplified Momentum Analysis Approach by Hunt, Sherry L, Temple, Darrel M, Abt, Steven R, Kadavy, Kem C, Hanson, Greg

“…AbstractRoller compacted concrete (RCC) stepped spillways are growing in popularity for providing overtopping protection for aging watershed dams with…”
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Discussion of Daniels and McCusker (2010): “Operator bias characterizing stream substrates using Wolman pebble counts with a standard measurement template.” Geomorphology 115, 194–198 by Bunte, Kristin, Potyondy, John P., Abt, Steven R., Swingle, Kurt W.

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