Dataset: M81/2c - Simrad EM120 Data

HOME 
Imprint 
Archive unpublished
Dataset citation unpublished
Metadata of dataset ISO 19115/19139, FGDC
CruiseM81/2c
Navigation system Meteor C-Nav
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 listing665 files, as XML file
Tracklength [km] 5103
Generalised track ¹ KML file
Gross coverage [km²] (unedited - no warranty) 66943
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 goal of M81/2c GASLOG was to investigate the water column around the Logatchev hydrothermal vent field (LHF) on the mid-Atlantic ridge. The hull-mounted multibeam system EM 120 (12 kHz) was used to record bathymetry and backscatter data during the transit (except within the EEZs) and during field work around Logatchev. The system parameters were set to automatic mode with a fix swath angle of 120°. Some data is very much disturbed by heavy movement of the vessel. Additionally to the multibeam data CTD data were taken.
Sonar system operators N/A
(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.