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1 Introduction Nearshore waters are known to be more turbid than waters further offshore, owing to land runoff, large tidal currents, and high-energy waves (Fettweis & Lee, 2017). Turbidity in nearshore waters is primarily due to suspended sediment (more turbid waters represent waters with higher concentrations of suspended particles).
Multibeam acoustic backscatter has considerable utility for remote characterization of spatially heterogeneous bed-sediment composition over vegetated and unvegetated riverbeds of mixed sand and gravel. However, the use of high-frequency, decimeter-resolution acoustic backscatter for sediment classification in shallow water is hampered by significant topographic contamination of the signal.
1 Introduction The occurrence and movement of large wood (downed, dead pieces greater than 10 cm in diameter and 1 m long; Wohl, Kramer, et al., 2019) can significantly influence the evolution of river ecosystems through bio-geomorphic feedbacks (Ruiz-Villanueva et al., 2016; Wohl, Brierley, et al., 2019).
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