Sea floor topography and flow on the flanks of the MAR.

(a) 3D projection from swath bathymetry surveys around the NW MAR station, vertical and horizontal scales the same. (b) Location of the NW mooring (base 2500 m depth) and flow at different heights above the sea floor. Red vectors - long term mean velocity. Green - ellipses of the dominant (M2) tidal constituent. (c) Diagrammatic cross section of a flank of the ridge showing the relationship between flat plains, gentle slopes and steep cliffs. The steep cliffs face towards the ridge axis.