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Modifying the Bank Erosion Hazard Index (BEHI) Protocol for Rapid Assessment of Streambank Erosion in Northeastern Ohio
Published on: February 13, 2015
1976 bedload measurements, East Fork River, Wyoming
1University of California, Berkeley, California 94720.
Summary
Bedload transport rates in the East Fork River exhibit significant spatial and temporal variability. Measurements reveal common standard deviations of 50-100% and over 10-fold variations across channel widths.
Area of Science:
- Fluvial geomorphology
- Sediment transport dynamics
Background:
- Understanding bedload transport is crucial for river management and geomorphic studies.
- Previous research indicates variability, but precise quantification in dynamic systems is ongoing.
Purpose of the Study:
- To quantitatively measure bedload-transport rates in the East Fork River.
- To characterize the spatial and temporal variability of traction load.
Main Methods:
- Quantitative measurements of bedload-transport rate.
- Analysis of 1-minute increments of mean transport rate.
- Measurement of transport rates across eight equal-length increments of channel width.
Main Results:
- Bedload transport rates display substantial spatial and temporal variability.
- The standard deviation of the mean transport rate frequently ranged from 50% to 100%.
- Transport rates varied more than 10-fold between sections of minimum and maximum transport across the channel width.
Conclusions:
- Traction load in the East Fork River is highly variable over short time and spatial scales.
- These findings highlight the complexity of accurately assessing riverine sediment transport.
- The results have implications for hydrological modeling and sediment budget estimations.
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