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Bedload flux is notoriously challenging to … Bedload flux is notoriously challenging to measure and model with its dynamics, therefore, remains largely unknown in most fluvial systems worldwide. We present a global scale bedload flux model as part of the WBMsed modeling framework. The results show that the model can very well predict the distribution of water discharge and suspended sediment and well predict bedload. Bedload predictions’ sensitivity to river slope, particle size, discharge, river width, and suspended sediment were analyzed, showing that the model is most responsive to spatial dynamics in river discharge and slope. The relationship between bedload and total sediment flux is analyzed globally and in representative longitudinal river profiles (Amazon, Mississippi, and Lena Rivers). The results show that while, as expected, the proportion of bedload is decreasing from headwater to the coasts, there is considerable variability between basins and along river corridors. The topographic and hydrological longitudinal profiles of rivers are shown to be the key driver of bedload longitudinal trends with fluctuations in slope controlling its more local dynamics. Differences in bedload dynamics between major river basins are attributed to the level of anthropogenic modifications, flow regimes, and topographic characteristics. regimes, and topographic characteristics. +
Spatial Trends and Drivers of Bedload and Suspended Sediment Fluxes in Global Rivers +
Tuscaloosa +
United States +
sagy.cohen@ua.edu +
University of Alabama +
Cohen +
Image: +
4) Teaching with Jupyter NoteBooks +
4) Xarray for Scalable Scientific Data Analysis +
1) Component Creation with Landlab +
Alabama +
United States +
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19:00:59, 31 January 2022 +
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19:01:15, 31 January 2022 +
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