Dataset: SO219A/1 - Simrad EM120 Data

HOME 
Imprint 
Archive DOI
Dataset citation HTML, BibTeX, RIS
Metadata of dataset ISO 19115/19139, FGDC, PANGAEA
CruiseSO219A/1
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 listing418 files, as XML file
Tracklength [km] 2360
Generalised track ¹ KML file
Gross coverage [km²] (unedited - no warranty) 22741
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 The main intention of using the hydroacoustic systems during SO219A was to obtain bathymetry of profiles crossing the Japan Trench for comparison with data obtained before the earthquake in March 2011 and to obtain subbottom information in the areas where sediment cores have been retrieved. Additionally, finding any indications for seep related features have been of interest.
Abstract Rv SONNE is equipped with the KONGSBER multibeam echosounder EM120. Due to insufficient data quality in the outer beams, the maximum swath width used during this cruise was between 120 to 130. Actual sound veolocity profiles were recorded with the CPT an inserted as basis for optimized performance. For the purpose of detailed bathymetrey and backscatter mapping in small areas the swath width was regularly reduced to90 while for general surveying during transits and runnin long profiles a swath of 120 or 130 was chosen. Data were recorded in *.all files
Sonar system operators (none)
(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.