Principals of MULTIBEAM swath bathymetry
- Using sound waves to determine water depth
- Measuring time difference between sending and receiving of the sound wave
- When sound velocity is accurately known; water depth can be determined
… same as for single-beam echosounding/echolod
- Biggest advantage of MULTIBEAM mapping is TIME-COST efficiency
- Depth values and positions are corrected (CTD sound velocity profiles; motion sensor; GPS)
SEABEAM 1050: 50 kHZ; 120 degrees swath angle; 1.5 by 1.5 degrees beam angle; 108 beams
| Footprint or depth measurement = | 1.5 m by 1.5 m at 50 m water depth |
| 37 m by 37 m at 1500 m water depth |
Programm of the RAS Presidium No. 17.8 (2009) and FWO Flanders project 1.5.198.09.