Northwest Atlantic Mid-Ocean Channel

The Northwest Atlantic Mid-Ocean Channel (NAMOC) is the main body of a turbidity current system of channels and canyons running on the sea bottom from the Hudson Strait, through the Labrador Sea, and ending at the Sohm Abyssal Plain in the Atlantic Ocean.

Contrary to most other such systems which fan away from the main channel, numerous tributaries run into the NAMOC and end there.

With a total length of about 3,800 km (2,361 mi), NAMOC is one of the longest underwater channels in the world.

This asymmetry is attributed to the Coriolis effect affecting the turbidity currents, which reach velocities of 6–8.5 m/s[3] and deposit silt and clay over the channel.

The channel becomes on average more straight towards the south, but it still contains abrupt turns due to local seamounts sea bed fractures.