Fig. 4.

Simulated suspended particle characteristics (at location of bottom-mounted ADCP) and signal-to-noise ratio (SNR) from bottom-mounted ADCP (averaged over three beams and mean removed to account for expected decay with distance). (A) SNR values versus depth (grayscale: dB). (B) Depth-averaged SNR values (dB). (C) Near-bottom SNR minus near-surface SNR values in excess of mean plus one standard deviation (dB). (DāF) Simulated depth-averaged velocity (cm sā1) of suspended sediments at ADCP location for sand size of 0.2 mm (D), 0.25 mm (E), and 0.3 mm (F) diameters.