Please note that operations of the Fishing Echo Sounder Simrad EK 60 / EK 80 requires experienced scientific staff on board. The system is not operated by the ship's crew. Announce operations with the Fishing Echo Sounder Simrad EK 60 / EK 80 to AWI-Logistics prior to the cruise and clarify the data transfer after the cruise. Data quality of Fishing Echo Sounder Simrad EK 60 / EK 80 is decreased by operating other Echo Sounders. Repeatable disturbances wered detected from simultaneously operating a) POSIDONIA, b) Deep Water Sounder Simrad EA 500 DWS, c) Sonar Doppler Speed Log DOLOG and d) Sediment Echo Sounder Parasound P70. Switch off these Echo Sounders for high data quality. |
18, 38, 70, 120, 200 kHz |
The system consits of five "split beam" transducers (ES-18, ES-38B, ES-70C, ES-120C, ES-200C) located in the box keel, five General Purpose Transceivers (GPTs) in Geräteraum and a computer with data acquisition and processing software installed in wissenschaftlichen Arbeitsraum. |
38 kHz | 70 kHz | 120 und 200 kHz |
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Time synchronising of the computers is regulated via the affiliation to the Windows domain. Additionally, the NMEA-String ZDA is stored in the data files. |
The geographical ship's position is transferred to the Master PC together with the NMEA-String and to the data files. There is no centering of the GPS Position to the transducers. |
The data acquisition and processing software ER60 creates rawdata in the following data structure: |
|| root directory | \\polsrv1\data01\fishsounder\... || directory name | CruiseNo \ \\ e.g. \\ ANT25_3\ || file name | CruiseNo-Dyyyymmdd-Thhmmss.raw \\ with: \\ yyyy = year \\ mm = month \\ dd = day \\ hh = hour \\ mm = minute \\ ss = second \\ e.g. \\ ANT25_3-D20090113-T144735.raw || |
|| Data volume (MB per day) ca | 3500 || || Number of files per day ca | 100 || |
No data transfer to DShip. |
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. Then, the data (including meta data) can be extracted from https://www.pangaea.de/ (for authorized users only). |
|| File format(s) | ??? || || Calibration certificates | ??? || |