Dataset: M62/4 - Atlas Hydrosweep DS2 Data
Imprint
| HOME Imprint |
| Archive | unpublished |
| Dataset citation | unpublished |
| Metadata of dataset | ISO 19115/19139, FGDC |
| Cruise | M62/4 |
| Navigation system | Meteor C-Nav |
| Horizontal reference system (EPSG) | WGS84 geographic (4326) |
| Sonar system | Hydrosweep DS2 |
| Sonar type | multibeam |
| Depth definition | true depths |
| Depth datum (EPSG) | MeanSeaLevel depth (5715) |
| File format | SAM Electronics SURF format |
| File listing | 1441 files, as XML file |
| Tracklength [km] | 9260 |
| Generalised track ¹ | KML file |
| Gross coverage [km²] (unedited - no warranty) | 67565 |
| 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 aim of the cruise M62/4 was the geophysical investigation of spreading segment processes.The cruise set out to investigate processes of ridge segmentation at the Mid-Atlantic Ridge. The Hydrosweep swath-mapping system from Krupp-Atlas uses 56 beams subtending an angle of 90 degrees at the ship. In practice the data towards the edge of the swath can be noisy. Given the steady southeasterly trade winds in the study area, this meant that data could not be reliably collected on courses between about 120° and 230°. The best data resulted from courses heading roughly due north. We did not run Hydrosweep in calibration mode as previous experience has shown that this does not work in regions of rough seafloor topography. Instead, the depths will be calibrated using results from a CTD station at 7: 30S, 13: 26W. The data appeared to be degraded by strong spikes, which could be easily edited. Hydrosweep ran almost uninterrupted throughout the cruise. |
| Sonar system operators | S. Hacker, I. Jacobsen, M. Vinding Fallesen |
| (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.