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Comment: Automatically updated by Registry2Confluence-Transporter (polarstern@ingestsrv1, ask o2a-support@awi.de for questions)

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Note
titleAttention:

Please note that operations of the Fishing Echo Sounder Simrad EK 60 / EK 80 requires experienced scientific staff on board and can be only operated on request. The system is not operated by the ship's crew. Request operations with the Fishing Echo Sounder Simrad EK 60 / EK 80 to AWI-Logistics in sufficient time 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 were detected from simultaneously operating a) POSIDONIA, b) Sonar Doppler Speed Log DOLOG and c) Sediment Echo Sounder Parasound P70. Switch off these Echo Sounders for high data quality.

Summary

Sensorweb integration
urnvessel:polarstern:simrad_ek_60___ek_80ek80_ps
contenttypeSummary

The sounder operates several frequencies simultaneously thus allowing to detect fish in different depths.

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Sensorweb integration
urnvessel:polarstern:simrad_ek_60___ek_80ek80_ps
contenttypeMetadata
ManufacturerKongsberg
ModelSimrad EK 60 / EK 80
Serial No.n/a
Typeecho sounder
REGISTRY-Link↪ REGISTRY (8406)


Sensorweb integration
urnvessel:polarstern:simrad_ek_60___ek_80ek80_ps
contenttypeImages

Image Removed Image Removed Image Removed Image Removed Image Added Image Added Image Added


Transducer Frequency:

18, 38, 70, 120, 200 kHz
Metadata (Metadata Plugin)
0Frequency
Contacts
 Sensorweb integration
urnvessel:polarstern:simrad_ek_60___ek_80ek80_ps
contenttypeContacts
 Name  Institution  Role 
Sören KrägefskyAlfred - Wegener - Institute, Helmholtz Centre for Polar and Marine ResearchEngineer In Charge, Principal Investigator, Data Scientist
Alfred Wegener Institute for Polar and Marine ResearchSören KrägefskyAlfred - Wegener - Institute, Helmholtz Centre for Polar and Marine ResearchData ScientistOwner
Components
The system consits of five "split beam" transducers (ES-18, ES-38B, ES-70-7C, ES-120-7C, ES-200-7C) located in the box keel, five General Purpose Transceivers (GPTs), two EK80 WBTs (45-90 kHz, 90-160 kHz) and a computer with installed data acquisition and processing software ER60 and EK80 in room A113.
 Metadata (Metadata Plugin)
0Components
Subdevices
 Sensorweb integration
urnvessel:polarstern:simrad_ek_60___ek_80ek80_ps
contenttypeSubdevices
echo sounder 
 Name  Model  Type  Serial Number  REGISTRY-Link 
Calibration System for Simrad EK60/EK80 small scale facility F120/200_kHz transducerSimrad EK60EK80n/EK80not assigned a↪ REGISTRY (8414)
F18_kHz transducerEK60/EK80Simrad EK80n/a↪ REGISTRY (8411)
F38_kHz transducerSimrad EK60EK80n/EK80not assigned a↪ REGISTRY (8407)
F70_kHz transducerSimrad EK60/EK80not assigned EK80n/a↪ REGISTRY (8409)
acoustic doppler current profiler and echo sounderEC150-3C transducern/a↪ REGISTRY (8419)
Position
 Sensorweb integration
urnvessel:polarstern:simrad_ek_60___ek_80ek80_ps
contenttypeLocalFrame
Origin Description:Infoxyz-position calculated from Alignment Survey Report RV Polarstern (2016), transducers located in box keel, electronics located in E525, computers located in A113
X:73.14 m
(X-0 is at the center of der rudder (ref. design drawing of the vessel), positive X-axis is forward and along vessel centerline) 
Y:0.022 m
(Y-0 at centerline, positive Y-axis is portside )
Z:0.012 m
(Z-0 is set to the lowest point of the keel, positive Z-axis is upwards) 
Data logging, storage and archiving
Logged parameters
 Sensorweb integration
urnvessel:polarstern:simrad_ek_60___ek_80ek80_ps
contenttypeParameters
 Parameter  Sensor O2ARegistry Output Type  Unit 
depthdepthm
Central geographical ship's position and time standard
 Metadata (Metadata Plugin)
0timestandard
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 
Mass data: The data acquisition and processing software ER60 creates rawdata in the mass storage. Please note that there will be a transit from Simrad EK60 to EK80 in 2018 changing data structure and volume.

 Metadata (Metadata Plugin)
0Rawdata

 Metadata list
|| 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
 Metadata (Metadata Plugin)
0DShip
Reduced set of measurement data.

|| Device name | fishing echo sounder || 
|| Parameters | depth (18 kHz) \[m\]; depth (38 kHz) \[m\]; depth (70 kHz) \[m\]; depth (120 kHz) \[m\];  depth (200 kHz) \[m\] ||
 Metadata list
Data archiving on land 
|| File format(s) | *.txt || 
|| Calibration certificates | NO ||
 Metadata (Metadata Plugin)
0DataOnLand
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). DShip data set can be extracted from https://dms.awi.de.
 Metadata list

 Metadata list
Calibration
The EK80 system must be calibrated. Ideally, the calibration is executed before and after the measurement in the working area. So, the calibration parameters can be defined dependent the actual water conditions. For this reason a calibration on previous cruises will not lead to optimal results. 
The calibration is performed using three winch systems positioning the calibration sphere below the transducers. 
The winch system as well as their control must operated by the scientists. The laboratory electronic engineer may assist the setup of the system. 
A calibration must be planned like all other scrientific work prior the cruise, because the calibration work needs time. Ideally half a day is requested, but will take longer (may be a whole day), if weather conditions decrease. 
Ideally the calibration is performed in calm sea without wind. If wind forces the drift of the ship, the winches will not hang vertical anymore but will also drift. Under this conditions it is very difficult, to move the calibration sphere to the requested locations. 
Furthermore, the calibration must be planned, because calibration equipment is not permanently on board. The winches etc. need storage capacities and are stored during harbour visit in Bremerhaven, only. 
If you are planning to execute a calibration, please add the that work in formula "Einsatzplanung" and step in contact with schiffskoord@awi.de for further planning. 
Documentation
 Sensorweb integration
urnvessel:polarstern:simrad_ek_60___ek_80ek80_ps
contenttypeResources