Dataset: MSM31 - Simrad EM122 Data
Imprint
| HOME Imprint |
| Archive | DOI |
| Dataset citation | HTML, BibTeX, RIS |
| Metadata of dataset | ISO 19115/19139, FGDC, PANGAEA |
| Cruise | MSM31 |
| Navigation system | Merian - Seapath 320 |
| Horizontal reference system (EPSG) | WGS84 geographic (4326) |
| Sonar system | Simrad EM122 |
| Sonar type | multibeam |
| Depth definition | true depths |
| Depth datum (EPSG) | MeanSeaLevel depth (5715) |
| File format | Simrad multibeam processing format |
| File listing | 1171 files, as XML file |
| Tracklength [km] | 14105 |
| Generalised track ¹ | KML file |
| Gross coverage [km²] (unedited - no warranty) | 36539 |
| 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 | Bathymetric measurements were conducted continuously during the whole cruise with the Kongsberg EM122 multibeam echo sounder. Data acquisition started on August 18th, 2013 at 7:41 UTC shortly before reaching the Knipovich Ridge and lasted until September 13th, 2013, 22:02 UTC after leaving the Barents shelf south of Svalbard. In total an area of about 23,400 km² with a track length of about 7800 km was mapped during the cruise. Combined seismo-acoustic studies were conducted at ship speed of about 5 knots, dedicated multibeam surveys were run at 7-8.5 knots, and during transit the survey speed was 12-14 knots. The swath width of the EM122 was mostly set to values between 60° and 66°, depending on water depth, ship speed and sea condition, so that the outer beam quality did not decrease too much. To calibrate the measured depths the sound velocity profile was regularly updated using data from CTD casts that were performed on different sites of the survey area. |
| Sonar system operators | Jensen, Laura, Hadler, Annette, Hoffmann, Jasper |
| (MaNIDA) data level | 0 |
| Data quality / Lineage | |
| Point of contact | AWI bathymetry data responsible party |
| Aggregation |
(¹): KML file is created online from database applying track generalization ±50 meter.