Dataset: SO226 - Simrad EM120 Data
Imprint
| HOME Imprint |
| Archive | unpublished |
| Dataset citation | unpublished |
| Metadata of dataset | ISO 19115/19139, FGDC |
| Cruise | SO226 |
| Navigation system | Sonne - INS - GPS |
| 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 | 1829 files, as XML file |
| Tracklength [km] | 7930 |
| Generalised track ¹ | KML file |
| Gross coverage [km²] (unedited - no warranty) | 22902 |
| 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 | SO226 aimed to observe pockmarks along the Chatam Rise, offshore New Zealands South Island. Consequently SO226 assumed that sealevel lowstands during glacial maxima caused the dissolution of gas hydrates and hence triggered the formation of pockmarks. The EM120 was run at ship speeds between 3 kn and 4 kn, dedicated multibeam surveys were run at 6-8 knots, and during transit the survey speed was 10-12 kn. A roll offset of -0.2° was identified at the end of the cruise. |
| Sonar system operators | Jasper Hoffmann and Wilhelm Weinrebe |
| (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.