higher uncertainty in areas with high %Mud. The average error for %Mud prediction is
1.5% with less than 4% of the survey area having a standard deviation error greater than
7%. The opposite spatial distribution patterns were observed for the predictions of %Sand
(Figure 2A-C). The average error for %Sand prediction is 4.6% with only 1% of the area
having a standard deviation error greater than 21% (Figure 2D). The general patterns for
the two sediment parameters are consistent with our knowledge of the survey areas, based
on physical samples and underwater video.