Dataset: SO206 - Simrad Em120 Data
Imprint
| HOME Imprint |
| Archive | unpublished |
| Dataset citation | unpublished |
| Metadata of dataset | ISO 19115/19139, FGDC |
| Cruise | test |
| Navigation system | Sonne GPS+GLONASS GG24 |
| 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 | ? |
| Tracklength [km] | ? |
| Generalised track ¹ | ? |
| Gross coverage [km²] (unedited - no warranty) | ? |
| 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 cruise SO206 was predominantly conducted as a pre-site survey for in order to fill existing gaps in the seismic record at two of the proposed drill locations. A 2D seismic survey was conducted running over the large-scale seamount subduction slide "Jaco Scarp" yielding a highly improved image of the structural pattern within the upper 1000 m of the sedimentary sequence. Most of the area had already been mapped in the past. Consequently, acquiring new bathymetry was not a major objective. As seismics were generally carried out at low survey speed and with closely spaced survey lines, bathymetric grids were thought to be improved by choosing a reduced swath opening angle of 80°. While this produced good results in deeper water, the overlapping footprints of the system in shallow water resulted in side echoes and erroneous depth recordings. An additional dedicated bathymetric survey on the upper slope was consequently carried out with 120° total swath width. |
| Sonar system operators | Sebastian Karstel, Ingo Klaucke |
| (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.