Dataset: M129 - Simrad EM710 Data | HOME Imprint |
Archive | unpublished |
Dataset citation | unpublished |
Metadata of dataset | ISO 19115/19139, FGDC |
Cruise | M129 |
Navigation system | Meteor - Seapath 320 |
Horizontal reference system (EPSG) | WGS84 geographic (4326) |
Sonar system | Simrad EM710 |
Sonar type | multibeam |
Depth definition | true depths |
Depth datum (EPSG) | MeanSeaLevel depth (5715) |
File format | Simrad multibeam processing format |
File listing | 36 files, as XML file |
Tracklength [km] | 167 |
Generalised track ¹ | KML file |
Gross coverage [km²] (unedited - no warranty) | 77 |
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 ecological-biological expedition M129 focused on biogeochemical processes, trophic networks, and productivity and the interaction between shallow waters, the shelf, and the open ocean. Major topics of research were covered during this cruise: The eutrophic, low-pH ecosystem off-shore Mauritania to Senegal. The sea off Mauritania and Senegal represents a transition zone between the relatively cool water masses of the Canary Current upwelling system coming from the North and the outreaches of the warm tropical waters of the Guinea Current from the South. Trophic networks in the upwelling eco-system Ciliates and heterotrophic dinoflagellates often have a larger grazing impact on autotrophs than do copepods. Though multibeam has been recorded during the cruise, it was not a major focus and the responsible party provided no acquisition information. |
Sonar system operators | Klenz, Thilo |
(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.