Dataset: M129 - Simrad EM710 Data

HOME 
Imprint 
Archive unpublished
Dataset citation unpublished
Metadata of dataset ISO 19115/19139, FGDC
CruiseM129
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 listing36 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.