Dataset: MSM15/1 - Simrad EM1002 Data
Imprint
| HOME Imprint |
| Archive | DOI |
| Dataset citation | HTML, BibTeX, RIS |
| Metadata of dataset | ISO 19115/19139, FGDC, PANGAEA |
| Cruise | MSM15/1 |
| Navigation system | Merian - Seapath 200 |
| Horizontal reference system (EPSG) | WGS84 geographic (4326) |
| Sonar system | Simrad EM1002 |
| Sonar type | multibeam |
| Depth definition | True depths |
| Depth datum (EPSG) | MeanSeaLevel depth (5715) |
| File format | Simrad multibeam processing format |
| File listing | 915 files, as XML file |
| Tracklength [km] | 1598 |
| Generalised track ¹ | KML file |
| Gross coverage [km²] (unedited - no warranty) | 2246 |
| 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 | Multibeam swathmapping surveys were performed with the onboard multibeam echo sounder system Kongsberg EM1002. This is a shallow to medium water echo sounding system developed for ranges between 2 and 1000 meters. To assign a geographic position to a depth measurement, navigation data of MARIA S. MERIAN is provided by a Seapath intertial navigation system (INS). This data is based on a differential GPS signal from a Trimble SPS461 DGPS system. On this cruise 14 multibeam surveys were performed with an overall time of 72 hours. Throughout all surveys the EM1002 system worked very reliable. A problem not solvableduring this cruise was a systematic error in the outer starboard beams (approx. from beam 88 to 111). These were lowered about 1 m compared to the other beams in the fan. Therefore all these beams had to be deleted for every profile. The resulting profile width decreased to 80 % and the line spacing between the profiles had to be decreased significantly, too. |
| Sonar system operators | (none) |
| (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.