Dynamic Threshold Relations of Stormflow Runoff in Humid Headwater Catchments of the Coweeta Hydrologic Laboratory Public Deposited
- Last Modified
- March 19, 2019
- Creator
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Scaife, Charles
- Affiliation: College of Arts and Sciences, Department of Geography
- Abstract
- This thesis examines the long-term threshold response of rainfall-runoff relationships at the Coweeta Hydrologic Laboratory located in the Southern Appalachian Mountains of North Carolina. Threshold relationships between total stormflow and antecedent wetness represent an important emergent behavior that has been observed in previous studies. These studies are limited to only several years of analysis, which raises questions about longer term non-stationarity in threshold response. To examine the influence of non-stationarity, this thesis uses 15 years of data collected by the Coweeta Long-Term Ecologic Research Study and USDA Forest Service at two long-term monitoring sites to supplement additional short-term observations. Results demonstrate that threshold behavior of stormflow generation exists in Coweeta as a function of total storm precipitation plus antecedent soil moisture. Long-term thresholds vary with respect to seasonality and interannual hydroclimate variability. Lastly, we found evidence of non-linear stormflow generation, which has implications for previously observed simple threshold behavior.
- Date of publication
- December 2015
- Keyword
- Subject
- DOI
- Identifier
- Resource type
- Rights statement
- In Copyright
- Advisor
- Band, Lawrence
- Riveros-Iregui, Diego
- Moody, Aaron
- Degree
- Master of Arts
- Degree granting institution
- University of North Carolina at Chapel Hill Graduate School
- Graduation year
- 2015
- Language
- Publisher
- Place of publication
- Chapel Hill, NC
- Access
- There are no restrictions to this item.
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