Dataset: M72/2 - Simrad EM120 Data
Imprint
| HOME Imprint |
| Archive | DOI |
| Dataset citation | HTML, BibTeX, RIS |
| Metadata of dataset | ISO 19115/19139, FGDC, PANGAEA |
| Cruise | M72/2 |
| Navigation system | Meteor C-Nav |
| Horizontal reference system (EPSG) | WGS84 geographic (4326) |
| Sonar system | Simrad EM120 |
| Sonar type | multibeam |
| Depth definition | true depths |
| Depth datum (EPSG) | MeanSeaLevel depth (5715) |
| File format | Simrad multibeam processing format |
| File listing | 231 files, as XML file |
| Tracklength [km] | 725 |
| Generalised track ¹ | KML file |
| Gross coverage [km²] (unedited - no warranty) | 1650 |
| 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 | During the M72/2 expedition, mainly the EM120 multibeam echo sounder (operating at 12 kHz) was operated in the Black Sea. Sound velocity profiles obtained during CTD operations were implemented for calibration. The vessel´s speed was 5 kn during surveys, and 10 kn during the transits. The operating frequency of the EM120 multibeam echo sounder is 12 kHz with an angular coverage sector of up to 150 degrees and 191 beams per ping as narrow as 1 degree. Achievable swath width on a flat bottom will normally be up to 5.5 times the water depth. The angular coverage sector and beam pointing angles was set to vary automatically with depth according to achievable coverage. This maximizes the number of usable beams. The beam spacing is normally equidistant with equi-angle available, corresponding to 1 % of depth at 90 degrees angular coverage, 2 % at 120 degrees and 3 % at 140 degrees. |
| Sonar system operators | S. Gauger |
| (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.