Dataset: SO186/1b - Sirmrad EM120 | HOME Imprint |
Archive | unpublished |
Dataset citation | unpublished |
Metadata of dataset | ISO 19115/19139, FGDC |
Cruise | SO186-1b |
Navigation system | Sonne - INS - GPS |
Horizontal reference system (EPSG) | WGS84 geographic (4326) |
Sonar system | Simrad EM120 |
Sonar type | multibeam |
Depth definition | true depths |
Depth datum (EPSG) | MeanSeaLevel depth (5715) |
File format | Simrad multibeam processing format |
File listing | 689 files, as XML file |
Tracklength [km] | 6470 |
Generalised track ¹ | KML file |
Gross coverage [km²] (unedited - no warranty) | 45520 |
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 main objective of the cruise SO186-1B&C was to contribute substantially to the implementation of the German-Indonesian Tsunami Early Warning System The main objective of the first part of the cruise (1-B) was a comprehensive site survey of the area in order to find suitable positions for the OBUs. This required extensive bathymetric mapping as most parts of the Sunda Arc subduction zone have not been mapped in detail so far. In addition, bathymetric information is essential for modelling tsunami wave propagation through the Indian Ocean which is another task in the framework of the GI-TEWS project. The EM120 was continuously in operation until the recovery operation of OBS. During the whole survey programme a constant speed of 10 knots was maintained to achieve sufficient bottom coverage along-track and to get data of better quality. The total survey length sums up to 2,546 nautical miles, yielding an estimated areal coverage of about 45,000 km2. |
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.