The science of measuring and charting the depths of an qcean, sea, lake, or other body of water Bathymetry revealed that the ocean floor,like the surface of the land, has many mountains, plains, and canyons
the science of measuring ocean depths to determine the topography of the sea floor
The science of measuring the depth of bodies of water in order to determine underwater topography A bathymetric map shows the topographic contours of the bottom of a body of water A bathymetric chart, in addition, provides navigational information (See hydrographic chart)
The measurement of the depth of the ocean floor from the water surface; the oceanic equivalent of topography