Dataset: SO190/1 Simrad EM120 Data | HOME Imprint |
Archive | unpublished |
Dataset citation | unpublished |
Metadata of dataset | ISO 19115/19139, FGDC |
Cruise | SO190-1 |
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 listing | 1106 files, as XML file |
Tracklength [km] | 6153 |
Generalised track ¹ | KML file |
Gross coverage [km²] (unedited - no warranty) | 63500 |
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 overall goal of SO190-1 was to investigate the relationship between the variability of the subducted plate and the tectonic evolution of the overriding plate. To understand the basic physical processes seismic and geoacoustic measurements were undertaken to quantify the "raw material" and to study the reaction and tectonic counter effects of the overriding plate. Before the EM120 surveys a roll calibration was carried that resulted in an offset of 0.03° positive to port side. This value was applied to the system before cruise SO190, increasing the roll correction from 1.05 to 1.08°. The operational parameters have been set as: no tide correction, equidistant beam coverage, automatic sounding mode, sound velocity at ships keel from ships sensor. Beam angles and across track distance were fixed to 65° and 12000 m. Only when crossing the upper slope and forearc basins in shallower waters the swath width was changed to 70° angle, allowing for slightly broader swaths. |
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.