Dataset: MSM11/1 - Simrad EM120 Data
Imprint
| HOME Imprint |
| Archive | unpublished |
| Dataset citation | unpublished |
| Metadata of dataset | ISO 19115/19139, FGDC |
| Cruise | MSM11/1 |
| Navigation system | Merian - Seapath 200 |
| 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 | 186 files, as XML file |
| Tracklength [km] | 1320 |
| Generalised track ¹ | KML file |
| Gross coverage [km²] (unedited - no warranty) | 5017 |
| 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 | On board MARIA S.MERIAN the multi-beam echosounding system (MBES) KONGSBERG EM 120 is used for deep-sea bathymetric surveys. It is mounted on the hull of the research vessel and provides 191 beams with spacings that can be set up equidistant or equiangular. The emission beam can be adjusted to opening angles up to 130° across-track while the opening angle alongtrack is fixed to 2°. Resulting footprints are dependent on water-depth (2° along-track and 2° across-track). The echo received from the seafloor consists of 191 reflected beams from frequency coded (11.25 to 12.6 kHz) acoustic signals. Raw depth data obtained by the MBES and recorded by Kongsbergs SIS-Software contain along-track distance, across-track distance and depth information. This raw data is already corrected for sound-velocity changes in the water-column by a SVP and for heave/pitch/roll movement by data from the motion reference unit (MRU). |
| Sonar system operators | S. Stephan, F. Schmidt-Schierhorn, N. Kaul |
| (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.