Dataset: SO109/1 - Atlas Hydrosweep DS Data

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Archive unpublished
Dataset citation unpublished
Metadata of dataset ISO 19115/19139, FGDC
CruiseSO109/1
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 listing57 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.