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Unsteady Features of Bedload and Near-Bed Turbulence Measured in a Braided Gravel Bed River

Author(s): Ryota Tsubaki; Karimullah Sefat; Jeffrey Tuhtan; Satomi Kawamura; Hideto Yoshimura

Linked Author(s): Hideto YOSHIMURA, Ryota Tsubaki, Jeffrey Tuhtan

Keywords: Pressure roughness geophone gravel-bed river turbulent sediment transport

Abstract: This study focused on a section of a river restoration project whose main objective was to investigate how river morphology changes due to natural flood processes and annual flushing flows from a dam. We utilized geophones to estimate the bedload and employed a custom benthic water pressure logger system, Sphera to monitor the hydro-geomorphological processes occurring during the flushing flow conducted in June 2024. In this work, we discuss both the raw and processed pressure data collected by Sphera. The data processing method leverages the unique characteristics of the measurement system to provide differential pressure readings during flood events.

DOI:

Year: 2025

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