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Attention:

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.

Summary

Transducer Frequency:

18, 38, 70, 120, 200 kHz

Responsible Persons

Components

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

Subdevices

Position

Data logging, storage and archiving

Logged parameters

Central geographical ship's position and time standard

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.

Rawdata storage on board

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

Dship

No data transfer to DShip.

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. Then, the data (including meta data) can be extracted from https://www.pangaea.de/ (for authorized users only).

File format(s)

???

Calibration certificates

???

Documentation

External Manuals

Events

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