project . 2022 - 2024 . On going

What controls the flow resistance of rough-bed rivers? Major new advances from high-resolution topography

UK Research and Innovation
  • Funder: UK Research and InnovationProject code: NE/W00125X/1
  • Funded under: NERC Funder Contribution: 642,466 GBP
  • Status: On going
  • Start Date
    01 Jan 2022
    End Date
    31 Dec 2024
Description
Being able to predict the depth and speed of water in a river channel is important for managing in-channel engineering, predicting sediment transport and flood risk, planning river restoration, prescribing minimum flows to preserve river habitats, and predicting carbon dioxide efflux. To make these predictions, we need to understand how the roughness of a river channel's bed and banks slows down the flow within it, i.e. the flow resistance of the channel. We commonly assume that sediment particles are the most important objects obstructing flow in river channels, and we represent their effect using the size of the larger particles relative to the flow depth . Th...
Description
Being able to predict the depth and speed of water in a river channel is important for managing in-channel engineering, predicting sediment transport and flood risk, planning river restoration, prescribing minimum flows to preserve river habitats, and predicting carbon dioxide efflux. To make these predictions, we need to understand how the roughness of a river channel's bed and banks slows down the flow within it, i.e. the flow resistance of the channel. We commonly assume that sediment particles are the most important objects obstructing flow in river channels, and we represent their effect using the size of the larger particles relative to the flow depth . Th...
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