Dataset: SO216 - Simrad EM120 Data

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Metadata of dataset ISO 19115/19139, FGDC, PANGAEA
CruiseSO216
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 listing760 files, as XML file
Tracklength [km] 5142
Generalised track ¹ KML file
Gross coverage [km²] (unedited - no warranty) 29415
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 During SO-216 the 12 kHz Simrad EM120 multibeam system of RV Sonne was used. This system works with 191 beams, where the maximum total angle of the emission beam is 150° across track and 2° along track. To obtain a high data accuracy, however, lower beam angles across track have been used (either 120° during transits or 90° within the main working area). Furthermore, the system was calibrated to allow correction of the ship's motion. Twice a roll 15 and pitch calibration procedure was started: the first calibration was on 19 June 2011 (Site 002MB; along a line from 3°51.50'S/ 152°08.00'E to 3°55.90'S/ 152°10.50'E), the second calibration was performed on 20 June 2011 (Site 006MB; along a line from 3 47.90'S/ 152°06.00'E to 3°44.90'S/ 152°06.00'E)
Sonar system operators Wolfgang Bach, Niels Jöns, Volker Ratmeyer
(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.