The side-scan sonograms were analyzed to classify morphology and examine distribution patterns of furrow aspects such as depth, directionality, crosscutting relationships, and width. Plane furrows are mostly curvilinear to linear in plan view and are flat in cross-section. The widths of these plane furrows are most commonly 25 m or less. Washboard furrows are typically 25-50 m in width, with lower occurrence in both smaller and larger widths. The steep sides of the furrows generate hyperbolic reflection.
Gouge furrows are commonly sinuous or arcuate to the point of doubling back on themselves.
Furrow type correlates with depth. Plane furrows occur in water depths of less than 600 meters. Gouge furrows occur in deeper water, between 400 and 700 meters of water depth. The distribution of washboard furrows occurs in water depths of 600 to 400 meters. Gouge furrows cut across washboard furrows, while washboard furrows cut across plane furrows.