Topographic Slope

Topographic slope is the gradient of the sea floor or land surface, the rate of elevation change with horizontal distance, expressed as an angle, a percent, or a ratio. On the sea floor it separates the near-flat continental shelf, typically under 0.1 degree, from the steeper continental slope at roughly 3 to 6 degrees, and the gentle abyssal plain. Slope governs sediment stability and the threshold for downslope failure, turbidity currents, and slumps, and it controls bottom-current strength and bedform development. Multibeam bathymetry yields slope as a derived grid, a primary input to seabed classification, cable and pipeline routing, and slope-stability assessment.