Dataset: SO237 - Simrad EM122 Data
Imprint
| HOME Imprint |
| Archive | DOI |
| Dataset citation | HTML, BibTeX, RIS |
| Metadata of dataset | ISO 19115/19139, FGDC, PANGAEA |
| Cruise | SO237 |
| Navigation system | Sonne (2) - INS - GPS |
| Horizontal reference system (EPSG) | WGS84 geographic (4326) |
| Sonar system | EM 122 |
| Sonar type | multibeam |
| Depth definition | true depths |
| Depth datum (EPSG) | MeanSeaLevel depth (5715) |
| File format | Simrad multibeam processing format |
| File listing | 923 files, as XML file |
| Tracklength [km] | 8388 |
| Generalised track ¹ | KML file |
| Gross coverage [km²] (unedited - no warranty) | 134123 |
| Usage | |
| Maintenance | |
| Constraints | Access: onDemand Use: copyright |
| Status | completed |
| Purpose | |
| Abstract | The cruise SO237 aimed to survey and sample the entire length of one of the major offsets of the Mid-Atlantic Ridge, the Vema Fracture Zone, looking at a history of plate creation and modification over 120Ma. During SO237 the sounding spacing was set to be equiangle (equidistant in the Puerto Rico Trench), meaning data were collected with approximately equal coverage on both port and starboard sides. After roll, pitch and heading calibration and setting tests during the first transit to define the optimum operating parameters, the majority of surveys were conducted with a symmetrical beam spacing of 60° to both sides, a survey speed of 10 kn and a line spacing of 7nm, giving a typical swath width on the seafloor of around 9nm/17km and yielding bathymetric grids with a final resolution of up to 60m and no gaps. |
| Sonar system operators | (none) |
| (MaNIDA) data level | 0 |
| Data quality / Lineage | |
| Point of contact | GEOMAR bathymetry data responsible party |
| Aggregation |
(¹): KML file is created online from database applying track generalization ±50 meter.