Thesaurus Term/Concept: BATHYMETRIC SURVEY
| Identifier | 147268 |
|---|---|
| Class | EVENT TYPE |
| Status | Preferred |
| Index? | Yes |
| Scope Note | A maritime investigation that records depth data which can be used to map submerged topography utilising echo sounders which emit a short acoustic pulse. Depth is calculated by measuring the time taken for the pulse to be reflected back to the transducer. |