Attention:
Please note that operations of the Sound Velocity Probe MIDAS SVP requires experienced scientific staff on board. The system is not operated by the ship's crew. Announce operations with the Sound Velocity Probe MIDAS SVP to AWI-Logistics prior to the cruise and clarify the data transfer after the cruise.
Summary
MIDAS Sound Velocity Profiler is used for measuring the speed along a vertical transect through the water column up to 6000m water depth.
| Manufacturer | Valeport |
|---|---|
| Model | MIDAS |
| Serial No. | 41492 |
| Type | sound velocity sensor |
Transducer Frequency
2.5 MHz
Contacts
| Name | Institution | Role |
|---|---|---|
| Boris Dorschel | Alfred-Wegener-Institute for Polar and Marine Research | Engineer In Charge |
| Boris Dorschel | Alfred-Wegener-Institute for Polar and Marine Research | Data Scientist |
| Alfred Wegener Institute for Polar and Marine Research | Alfred Wegener Institute, Helmholz Centre for Polar and Marine Research | Owner |
Components
The sound velocity probe consits of the probe, the mounting cage and the computer. The data processing software DataLog Express is installed on the computer. RS232 interface connects the computer to the probe. The sound velocity profiles can be transferred to the computer of the multibeam echo sounder Hydrosweep DS3 via the computer network.
Position
| Origin Description: | no xyz-position given, device stored in E525 and deployed when needed |
Data logging, storage and archiving
Logged parameters
| Parameter | Sensor Output Type | Unit |
|---|---|---|
| sound velocity | sound velocity | m/s |
| water temperature | water temperature | °C |
| pressure | pressure | bar |
Rawdata storage on board
The sound velocity probe measures the sound velocity in temporally equidistant intervals and stores the data to the internal flash drive. Import of the data from the probe to the computer is conducted with the data processing software DataLog Express. There is no designated central sound velocity data storage location. The operator is in charge of sound velocity data storage for further use, e.g. data transfer to the multibeam echo sounder Hydrosweep DS3.
Data archiving on land
After the cruise, the operator transfers the measurement data along with required meta data to AWI after consultaion with the data scientist and AWI Logistics.
File format(s) |
*.txt |
|---|---|
Calibration certificates |
YES at AWI Logistics |