Matthews, Bronwyn and Naylor, Mark and Sinclair, Hugh and Black, Andrew and Williams, Richard and Cuthill, Calum and Gervais, Matthew and Dietze, Michael and Smith, Anna (2024) Sounding out the river: seismic and hydroacoustic monitoring of bedload transport. Earth Surface Processes and Landforms, 49 (12). pp. 3840-3854. ISSN 0197-9337

Abstract

Seismological observations provide a non‐invasive and continuous means for indirectly measuring fluvial bedload transport. A significant challenge remains in independently characterising the seismic signature of bedload transport from other sources such as turbulence. We present a unique dataset from an alluvial Scottish river, combining seismic data and hydroacoustic measurements, to analyse bedload transport during three high‐flow events occurring within the same year. By studying three successive events, we assess the consistency of bedload transport thresholds in response to changing flow conditions and explore the presence of hysteresis in seismic data versus water level as an indicator of coarse bedload transport. Through the use of hydroacoustic data to independently characterise bedload transport, our findings reveal that bedload transport occurred during all three events but that the threshold for entrainment varied. These entrainment thresholds were influenced by antecedent events, with a drop of 15%–20% of the threshold flow depth following the largest of the three events. In agreement with recent studies, we also found that hysteresis in the seismic versus water level data is not sufficient for identifying and analysing bedload transport: Distinct hysteresis was only observed during the largest of the three events despite all events experiencing bedload transport as observed through the independent hydroacoustic data. Our work shows the value in combining independent datasets for long‐term monitoring of bedload transport to understand the evolution in the thresholds of bedload motion, providing crucial information for effective river and land‐use management in a changing climate with potentially impacted high‐flow events.

People
Matthews, Bronwyn
Author

Matthews, Bronwyn and Naylor, Mark and Sinclair, Hugh and Black, Andrew and Williams, Richard and Cuthill, Calum and Gervais, Matthew and Dietze, Michael and Smith, Anna (2024) Sounding out the river: seismic and hydroacoustic monitoring of bedload transport. Earth Surface Processes and Landforms, 49 (12). pp. 3840-3854. ISSN 0197-9337

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Naylor, Mark
Author

Matthews, Bronwyn and Naylor, Mark and Sinclair, Hugh and Black, Andrew and Williams, Richard and Cuthill, Calum and Gervais, Matthew and Dietze, Michael and Smith, Anna (2024) Sounding out the river: seismic and hydroacoustic monitoring of bedload transport. Earth Surface Processes and Landforms, 49 (12). pp. 3840-3854. ISSN 0197-9337

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Sinclair, Hugh
Author

Matthews, Bronwyn and Naylor, Mark and Sinclair, Hugh and Black, Andrew and Williams, Richard and Cuthill, Calum and Gervais, Matthew and Dietze, Michael and Smith, Anna (2024) Sounding out the river: seismic and hydroacoustic monitoring of bedload transport. Earth Surface Processes and Landforms, 49 (12). pp. 3840-3854. ISSN 0197-9337

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Black, Andrew
Author

Matthews, Bronwyn and Naylor, Mark and Sinclair, Hugh and Black, Andrew and Williams, Richard and Cuthill, Calum and Gervais, Matthew and Dietze, Michael and Smith, Anna (2024) Sounding out the river: seismic and hydroacoustic monitoring of bedload transport. Earth Surface Processes and Landforms, 49 (12). pp. 3840-3854. ISSN 0197-9337

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Williams, Richard
Author

Matthews, Bronwyn and Naylor, Mark and Sinclair, Hugh and Black, Andrew and Williams, Richard and Cuthill, Calum and Gervais, Matthew and Dietze, Michael and Smith, Anna (2024) Sounding out the river: seismic and hydroacoustic monitoring of bedload transport. Earth Surface Processes and Landforms, 49 (12). pp. 3840-3854. ISSN 0197-9337

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Cuthill, Calum
Author

Matthews, Bronwyn and Naylor, Mark and Sinclair, Hugh and Black, Andrew and Williams, Richard and Cuthill, Calum and Gervais, Matthew and Dietze, Michael and Smith, Anna (2024) Sounding out the river: seismic and hydroacoustic monitoring of bedload transport. Earth Surface Processes and Landforms, 49 (12). pp. 3840-3854. ISSN 0197-9337

Sperling, Justin R. and Poursat, Baptiste A.J. and Savage, Laurie and Christie, Iain and Cuthill, Calum and Aekbote, Badri and McGuire, Katie and Karimullah, Affar S. and Robbie, Jill and Sloan, William T. and Gauchotte-Lindsay, Caroline and Peveler, William J. and Clark, Alasdair W. (2023) A cross-reactive plasmonic sensing array for drinking water assessment. Environmental Science: Nano, 10 (12). pp. 3500-3508. ISSN 2051-8153

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Gervais, Matthew
Author

Matthews, Bronwyn and Naylor, Mark and Sinclair, Hugh and Black, Andrew and Williams, Richard and Cuthill, Calum and Gervais, Matthew and Dietze, Michael and Smith, Anna (2024) Sounding out the river: seismic and hydroacoustic monitoring of bedload transport. Earth Surface Processes and Landforms, 49 (12). pp. 3840-3854. ISSN 0197-9337

See full publications list
Dietze, Michael
Author

Matthews, Bronwyn and Naylor, Mark and Sinclair, Hugh and Black, Andrew and Williams, Richard and Cuthill, Calum and Gervais, Matthew and Dietze, Michael and Smith, Anna (2024) Sounding out the river: seismic and hydroacoustic monitoring of bedload transport. Earth Surface Processes and Landforms, 49 (12). pp. 3840-3854. ISSN 0197-9337

See full publications list
Smith, Anna
Author

Matthews, Bronwyn and Naylor, Mark and Sinclair, Hugh and Black, Andrew and Williams, Richard and Cuthill, Calum and Gervais, Matthew and Dietze, Michael and Smith, Anna (2024) Sounding out the river: seismic and hydroacoustic monitoring of bedload transport. Earth Surface Processes and Landforms, 49 (12). pp. 3840-3854. ISSN 0197-9337

See full publications list
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