From MarineSpecies Introduced Traits Wiki
Mapping of the seafloor depth with respect to the mean water level and the study of floor topography (Lincoln & Boxshall, 1987)..
The depths are almost always derived indirectly by measuring the time required for a signal to travel from a transmitter, to the bottom, and back to a receiver.
- Use of X-band and HF radar in marine hydrography
- Hyperspectral seafloor mapping and direct bathymetry calculation in littoral zones
- Lincoln R., Boxshall G. and Clark P. (1998). A Dictionary of Ecology, Evolution and Systematics (2nd Ed). Cambridge University Press: Cambridge, (England). 361pp.