Dataset: SO217 - Simrad EM120 data

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Archive unpublished
Dataset citation unpublished
Metadata of dataset ISO 19115/19139, FGDC
CruiseSO217
Navigation system Sonne GPS+GLONASS GG24
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 listing494 files, as XML file
Tracklength [km] 4038
Generalised track ¹ KML file
Gross coverage [km²] (unedited - no warranty) 15318
Usage Edited swathfile data are processed for grid and map compilations
Maintenance Update frequency of dataset: notPlanned
Constraints Access: onDemand
Use: copyright
Status completed
Purpose
Abstract The main objectives of Cruise SO-217 are to determine the isotopic and geochemical characteristics of North Pacific thermocline water and cool South Pacific intermediate water; to evaluate the hydrographic profiles of the two main inflow paths; to document changes in the ITF inflow during the late Pleistocene and to test model predictions of a strongly reduced glacial throughflow and significantly changed hydrographic profile in the Makassar strait. Angular coverage of the EM120 on board the Sonne was typically set at 65° to minimize noisy data at high angles, however the sea state was so calm during this voyage that it was typically set to 70°. When the ship was slowed to under 10kn during formal surveys the angle could be increased to 72° on each side. The system behaved extremely well during the course of the cruise.
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.