Dataset: M57/3 - Atlas Hydrosweep DS2 Data
Imprint
| HOME Imprint |
| Archive | unpublished |
| Dataset citation | unpublished |
| Metadata of dataset | ISO 19115/19139, FGDC |
| Cruise | M57/3 |
| Navigation system | Meteor C-Nav |
| Horizontal reference system (EPSG) | WGS84 geographic (4326) |
| Sonar system | Hydrosweep DS2 |
| Sonar type | multibeam |
| Depth definition | true depths |
| Depth datum (EPSG) | MeanSeaLevel depth (5715) |
| File format | SAM Electronics SURF format |
| File listing | 179 files, as XML file |
| Tracklength [km] | 3600 |
| Generalised track ¹ | KML file |
| Gross coverage [km²] (unedited - no warranty) | 9037 |
| 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 main focus of the third leg of M57 was to investigate the impact of biogeochemical carbon, nitrogen and sulfur cycles in the shelf area of Walvis Bay (between 22°S and 25°S). Therefore CTD rosettes were used to collect data about water mass composition and oxygen and nutrient contents.. Additionally acoustic survey were done to investigate free gas in sediment .Sediment cores were also taken. The used Hydrosweep system is a multibeam echosounder which uses a frequency of 15.5 kHz. The Parasound system was used to determine the water depth as well as displaying upper sediment layers using low frequences. Between 15.03.2003 22:00 and 17.03.2003 16:00 data was recorded that could not been converted to the SURF formate. No storage of data between 17.-20.03. causing data los. Though multibeam data was recorded, it was not the main focus of the cruise and no further information have been provided by the responsible party. |
| Sonar system operators | (none) |
| (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.