Dataset: SO191/1 - Simrad EM120 Data
Imprint
| HOME Imprint |
| Archive | unpublished |
| Dataset citation | unpublished |
| Metadata of dataset | ISO 19115/19139, FGDC |
| Cruise | SO191-1 |
| 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 | 496 files, as XML file |
| Tracklength [km] | 4266 |
| Generalised track ¹ | KML file |
| Gross coverage [km²] (unedited - no warranty) | 21475 |
| 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 | SO191-1 set out to achieve further insight like the build up, life time, internal structure, long term behaviour, etc. at the seep sites at the Hikurangi Margin. Geoacoustic Methods were applied to map the distribution and appearance of these seeps while seismic profiling provides high resolution images of the internal structures. Controlled source electromagnetic measurements were applied to complement the seismic sections. Methane concentration was measured near the surface and near the ocean bottom in order to study the distribution of methane at the transition from the subsurface to the water column and at the transition to the atmosphere. During SO191 a swath width of 120 or 100° was usually used for mapping. The system kept running during the entire time regardless if the ship steamed or was on station. New raw data files were started about every hour. |
| Sonar system operators | Jens Greinert |
| (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.