Which bottom current flows around seabed projections rather than over them?

Which bottom current flows around seabed projections rather than over them?

• A. Eastern Boundary Current
• B. Downwelling
• C. Contour Current
• D. Eddy

Answer: (C)

Bottom currents near the seabed are strongly shaped by the shape of the seabed itself. When a current encounters a seabed projection like a ridge or seamount, friction and the obstacle cause the flow to ride along the contours rather than push straight over the top. This makes the flow hug the bathymetric contours, curving around the feature instead of climbing over it. That behavior is the hallmark of a contour current. The other options describe different concepts: large-scale surface currents along coastlines, vertical sinking of water, or circular rotating flows. While those can occur in various contexts, they do not specifically capture the bottom current that follows contours around seabed features.

Bottom currents near the seabed are strongly shaped by the shape of the seabed itself. When a current encounters a seabed projection like a ridge or seamount, friction and the obstacle cause the flow to ride along the contours rather than push straight over the top. This makes the flow hug the bathymetric contours, curving around the feature instead of climbing over it. That behavior is the hallmark of a contour current.

The other options describe different concepts: large-scale surface currents along coastlines, vertical sinking of water, or circular rotating flows. While those can occur in various contexts, they do not specifically capture the bottom current that follows contours around seabed features.