Figure 4. Field measurements of flow fields and channel geometry. (a) Deployment locations of the AD2CPs (in black) and ADCP (in blue) instruments used in this study are shown together with the channel cross-sections where topographic surveys were carried out by means of an RTK-GPS. (b) Cross-sectional profiles of the surveyed channel cross-sections as obtained from the RTK data. Elevations are reported in meters above the mean sea level (MSL). Different symbols and colors denote different cross-sections according to the legend shown in panel “a”. (c,d,e,f) Photograph of the deployed instrument prior to data acquisition. Names of individual instruments recall those reported in panel “a”. (g) Photo of the topographic survey campaign carried out by means of an RTK-GPS during low tide. All the photos reported in panels (c,d,e,f, and g) were taken during the late stages of ebb tides.
Table 1. Parameters of the AD2CP and ADCP instruments used in this study