Dataset: M79/3 - Simrad EM120 Data
Imprint
| HOME Imprint |
| Archive | unpublished |
| Dataset citation | unpublished |
| Metadata of dataset | ISO 19115/19139, FGDC |
| Cruise | M79/3 |
| 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 | 70 files, as XML file |
| Tracklength [km] | 1051 |
| Generalised track ¹ | KML file |
| Gross coverage [km²] (unedited - no warranty) | 10950 |
| 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 | Cruise M79/3 aimed at physical, biogeochemical and biological sampling at and around seamounts in the Cape Verde region. These seamounts are important targets for the local fishery, but nearly nothing is known about their ecology. The EM120 deep-sea echo-sounder uses a frequency of 12 kHz with a 150° fan. One single ping obtains 191 beams with an actual footprint of 1° by 2°. The settings for the beam spacing can be set to equidistant on the bottom or equiangular. The equidistant mode was chosen in order to get a regular point allocation. The swath width depends on the water depth and achieves coverage to six times of the water depth. Raw multibeam data were obtained by the acquisition software SIS (Seabed Information System) running on a Windows operation system. Additionally CTD data were taken. |
| Sonar system operators | A. Schmidt |
| (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.