Dataset: MSM09/3 - Simrad EM120 Data
Imprint
| HOME Imprint |
| Archive | unpublished |
| Dataset citation | unpublished |
| Metadata of dataset | ISO 19115/19139, FGDC |
| Cruise | MSM09/3 |
| Navigation system | Merian - Seapath 200 |
| Horizontal reference system (EPSG) | WGS84 World Mercator (3395) |
| 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 | 1040 files, as XML file |
| Tracklength [km] | 7883 |
| Generalised track ¹ | KML file |
| Gross coverage [km²] (unedited - no warranty) | 33408 |
| 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 | Multi-beam bathymetric surveying with EM-120 for seafloor mapping |
| Abstract | RV Merian is equipped with a Kongsberg EM-120 multi-beam echo-sounder for continuous mapping of the seafloor. This system consists of a transmitter and receiver transducer array which is installed in a mills cross below the keel of the vessel. The transceiver unit contains the transmitter and receiver electronics and processors for beamforming and control of all parameters with respect to gain, ping rate and transmit angles. It has serial interfaces for vessel motion sensors, such as roll, pitch and heave, external clock and vessel position. The operator station processes the collected raw data, applies corrections, displays the results and logs the data to media. The EM-120 system has an interface to a sound speed sensor. On this cruise leg, the EM-120 was operated continuously with a setting of 12 kHz frequency and an angular coverage of 60° to each side. Data are stored as native raw data and grid data format on the Kongsberg server disks. |
| Sonar system operators | Karsten Gohl |
| (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.