Parameter Tree:
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH

Definition:
A measurement of distance from the sea surface to the sea floor.

Reference:
Alyn C. Duxbury, Alison B. Duxbury, and Keith A. Sverdrup. An Introduction to
the World's Oceans. 6th edition. McGraw-Hill Higher Education, 2000.