Dataset: SO109/1 - Atlas Hydrosweep DS Data | HOME Imprint |
Archive | unpublished |
Dataset citation | unpublished |
Metadata of dataset | ISO 19115/19139, FGDC |
Cruise | SO109/1 |
Navigation system | Sonne GPS SkyFix |
Horizontal reference system (EPSG) | WGS84 geographic (4326) |
Sonar system | Hydrosweep DS |
Sonar type | multibeam |
Depth definition | true depths |
Depth datum (EPSG) | MeanSeaLevel depth (5715) |
File format | Raw Hydrosweep DUX format |
File listing | 57 files, as XML file |
Tracklength [km] | 1562 |
Generalised track ¹ | KML file |
Gross coverage [km²] (unedited - no warranty) | 6307 |
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 | The specific objectives of Leg S0109-1 were to first survey the Axial Volcano sites and the sites on the Second Accretionary Ridge. The purpose was to identify currently active point sources of hydrothermal and cold fluids respectively. Identification of active vents was to be accomplished by delineation and tracking of plume structures based on tracer anomalies such as temperature. During Leg S0109-1 the 3 working areas Axial Volcano, Rogue Seamount and Oregon margin as well as the Astoria Canyon were swathmapped by Hydrosweep. The accuracy of the system is approximately 1 % of the water depth. The calibration of the sound velocity can be performed with a depth-constant sound velocity (1480 m/s; S0108). Data obtained on the Juan de Fuca Ridge were effected by high swell and steaming velocities and show artefacts even after careful reduction of the slant beams. |
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.