Dataset: SO183 - Simrad data

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Metadata of dataset ISO 19115/19139, FGDC, PANGAEA
CruiseSO183
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 listing2266 files, as XML file
Tracklength [km] 20075
Generalised track ¹ KML file
Gross coverage [km²] (unedited - no warranty) 211086
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 Multibeam data were collected to extend the global database of seafloor topography and to provide high resolution bathymetry for the expedition's scientific program.
Abstract The swath sonar bathymetry data were acquired as part of the project AISTEK-II during SONNE cruise SO183. The data were sampled using the multibeam sonar system Simrad EM 120 from Kongsberg, which operates on a frequency of 12 kHz, maximum swath width of 150 degree and 191 preformed beams. Mean sound velocity was gained from six sensor CTD measurements acquired during the cruise. Ship position was measured by GPS and DGPS, ship orientation by gyrocompass. The density and quality of depths were decreased during bad weather conditions. Raw data are delivered within Simrad format. XYZ data files are provided in addition, derived from edited data and containing a time period of 8 hours each.
Sonar system operators Ralf Krocker, Roland Niebling, Alexander Labrenz
(MaNIDA) data level 0
Data quality / Lineage
Point of contact AWI bathymetry data responsible party
Aggregation crossReference: SO183/001-1 CTD data
crossReference: SO183/004-1 CTD data
crossReference: SO183/007-1 CTD data
crossReference: SO183/013-1 CTD data
crossReference: SO183/016-1 CTD data
crossReference: SO183/020-1 CTD data


 (¹): KML file is created online from database applying track generalization ±50 meter.