Area with current depressions

Definition: An area of the seabed with depressions formed by bottom currents. They have an almost flat bottom often consisting of coarse-grained sediments that provide high backscatter in acoustic data, and current-/wave ripples are often observed. The size of the depressions varies, but they can be up to 3 km long, 300 m wide, and 1 m deep. Current depressions have been found, for example, on Sveinsgrunnen off Troms and in the North Sea.