What is another word for depth sounding?
Pronunciation: [dˈɛpθ sˈa͡ʊndɪŋ] (IPA) 
Depth sounding, a technique used to determine water depths, has several synonyms that are used interchangeably. These synonyms include bathymetry, hydrography, and echo sounding. Bathymetry refers to ocean depths and topography mapping, using various measurement techniques that are involved in depth sounding. Hydrography is the study of water bodies' physical features, including water depth. It involves using various techniques such as radar, sonar and echo sounding. Echo sounding is the use of sound waves to determine the depth of water. These synonyms are in the same field of study and are used in different contexts depending on the situation and technique used in depth sounding.
