Reply to Comment by Poppema and Wüthrich on “Momentum and Energy Predict the Backwater Rise Generated by a Large Wood Jam”
Name
Geophysical Research Letters - 2024 - Follett - Reply to Comment by Poppema and W thrich on Momentum and Energy Predict.pdf
Description
Published version
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593.77 KB
Format
Adobe PDF
Checksum (MD5)
cd63abd5c0d27cb86f7986bc4100b930
Author(s)
Follett, Elizabeth
Schalko, Isabella
Nepf, Heidi
Date Issued
April 17, 2024
Journal
Geophysical Research Letters
Publisher
American Geophysical Union
Citation
Poppema, D. W., & Wüthrich, D. (2024). Comment on “Momentum and energy predict the backwater rise generated by a large wood jam” by Follett, E., Schalko, I. and Nepf, H. Geophysical Research Letters, 51, e2023GL106348.
Version
Final published version
Abstract
Follett et al. (2020a, https://doi.org/10.1029/2020gl089346) developed an analytical model to predict backwater rise by log jams, using the size and packing density of logs and the jam length, as well as river slope and bed roughness. We show that the model formulas can be rewritten using the Froude number instead of river slope and roughness, thus improving their applicability in engineering practice. The equation terms and results of Follett et al. (2020a, https://doi.org/10.1029/2020gl089346) are found to be similar to those of the empirically derived formula by Schalko et al. (2018, https://doi.org/10.1061/(asce)hy.1943-7900.0001501). However, some differences are identified, calling for further study. Most notably, these distinctions pertain to the effect of accumulation porosity, with additional minor differences in the exponent of the Froude number. Lastly, model implications for some broader applications are explored, showing a methodology to calculate the representative log size for log mixtures, and the expected effect of log orientation on backwater rise.
Description
This article relates to: Follett, E., Schalko, I., & Nepf, H. (2020). Momentum and energy predict the backwater rise generated by a large wood jam. Geophysical Research Letters, 47, e2020GL089346. https://doi.org/10.1029/2020GL089346
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
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Creative Commons Attribution-NonCommercial-NoDerivatives
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DOI of Published Version
10.1029/2024gl108808
