Dataset: POS 402 - Seabeam 3050
Imprint
| HOME Imprint |
| Archive | unpublished |
| Dataset citation | unpublished |
| Metadata of dataset | ISO 19115/19139, FGDC |
| Cruise | POS402 |
| Navigation system | Poseidon - GG24 |
| Horizontal reference system (EPSG) | WGS84 geographic (4326) |
| Sonar system | SeaBeam 3050 |
| Sonar type | multibeam |
| Depth definition | True depths |
| Depth datum (EPSG) | MeanSeaLevel depth (5715) |
| File format | Elac exchange format XSE |
| File listing | 185 files, as XML file |
| Tracklength [km] | 992 |
| Generalised track ¹ | KML file |
| Gross coverage [km²] (unedited - no warranty) | 3093 |
| Usage | Primary data are generally not depth-edited and should not directly be used for final product compilations. |
| Maintenance | Update frequency of dataset: notPlanned |
| Constraints | Access: onDemand Use: copyright |
| Status | completed |
| Purpose | |
| Abstract | The L3 ELAC Nautik multibeam echosounder SeaBeam 1050D was used during this cruise to map a total of almost 600 km2 of the Menez Gwen segment. the system collects bathymetric data in shallow to medium water depths with a swath width of 120 degrees. Two narrow beam width transducer arrays are pinging quasi-simultaneously into 14 directed sectors with a high acoustic transmission level. The receiving beamformer generates 3 narrow beams within each sector (a so-called subfan) with a beam width of 1.5° (Phase calculator) and a spacing of 1.25°. Acomplete fan comprises three subfans, i.e. there are 14 sectors x 3 beams x 3 subfans = 126 beams in total. The relatively high operating frequency of 50 kHz together with special small size transducers offers the two advantages of high coverage and narrow beam width. The application of preformed beams guarantees extremely good side lobe suppression and a very low error rate. |
| Sonar system operators | Paul Wintersteller |
| (MaNIDA) data level | 0 |
| Data quality / Lineage | |
| Point of contact | MARUM bathymetry data responsible party |
| Aggregation |
(¹): KML file is created online from database applying track generalization ±50 meter.