- the measurement of the depths of oceans, seas, or other large bodies of water.
- the data derived from such measurement, especially as compiled in a topographic map. (<a href="http://dictionary.reference.com/browse/bathymetry">dictionary.com</a>)
"Also sensitive to sea floor roughness are the internal waves in oceans that bring up deep, cold, nutrient-rich waters to the surface and carry dissolved atmospheric carbon dioxide to ocean depths. 'Knowing the sea floor bathymetry better would definitely improve the mixing models that we use," says Steven Jayne, a physical oceanographer at Woods Hole Oceanographic Institution in Massachusetts."
- Eric Hand, "New satellite radar could find 100,000 underwater mountains", 20 March 2015 <a href="http://news.sciencemag.org/earth/2015/03/new-satellite-radar-could-find-100000-underwater-mountains">Science</a>