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Tuning bank-full flow duration to modern drainage conditions in moderate to large drainage areas as a tool for reducing error in ancient source-to-sink mass flux calculations
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2024-05-06
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Revival of interest in the source-to-sink method has produced several applications, resulting in new techniques to estimate sediment flux from catchment areas. Each of these techniques are limited by order-of-magnitude uncertainties, requiring new research effort. Initial work by Wilson tuned bank-full-flow duration to the variables cross-sectional area, drainage area, and climate in drainages up to 30,000 km2, and found correlations that could be used to better predict bank-full duration in the ancient where these variables were known. In this research, 94 major rivers worldwide have been subsampled to look at these variables for larger drainages. There is an overall improvement between all correlations where the data is binned by major climate. Other correlations that Wilson observed in smaller drainages hold true in larger drainages. For example, larger drainages show a correlation between bank-full duration and drainage size when binned by climate.
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PuffSara_thesis.pdf
Adobe PDF, 6.26 MB
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Geological Sciences
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Holbrook, John