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- Title
Quantitative characterization of stream turbidity-discharge behavior using event loop shape modeling and power law parameter decorrelation.
- Authors
Mather, Amanda L.; Johnson, Richard L.
- Abstract
Turbidity behavior in streams is a complex and dynamic function of both source material supply and event-driven transport. While the primary controls on turbidity behavior across time and space are still not fully understood, recent increases in the availability of high temporal resolution, colocated stream turbidity, and discharge data provide an opportunity for more detailed analysis. Here we examine methods to quantitatively characterize event responses by modeling the shape of turbidity-discharge hysteresis loops. A total of 1559 events from 20 gages in the Mid-Atlantic region of the U.S. were modeled using both previously reported models and new models combining elements of existing models. The results suggest that a more general power law-based model, utilizing both a discharge rate of change term and a 'supply' term, allows characterization of a wide range of simple and complex events. Additionally, this study explores a decorrelation approach to address the strong correlation frequently observed between the power law model coefficient (
- Subjects
TURBIDITY; RIVERS; HYSTERESIS loop; WATER quality; WATERSHEDS
- Publication
Water Resources Research, 2014, Vol 50, Issue 10, p7766
- ISSN
0043-1397
- Publication type
Article
- DOI
10.1002/2014WR015417