Figure 54. Graphs showing time series of acoustic backscatter 10-centimeters from transducers of the acoustic backscatter sensor (ABSS) mounted on profiling arm. Units plotted on the y-axis are the logarithm of the ABSS response measured in analog-digital converter counts, normalized by the maximum number of counts. Dashed line marks time when tripod tipped over by strong waves and currents. Refer to the Abbreviations and Symbols section.