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Attention:

Thermosalinograph Keel 1 and Keel 2 data stored in data acquisition system DShip are uncorrected measurement data.

Summary

The thermosalinograph is an instrument used to accurately determine sea surface conductivity and temperature. The remote temperature sensor SBE38 is integrated with the SBE21 Thermosalinograph.

ManufacturerSeabird
ModelSBE21 with SBE38
Serial No.n/a
Typethermosalinograph



Contacts

NameInstitutionRole
Gerd RohardtAlfred-Wegener-InstituteEngineer In Charge
Gerd RohardtAlfred-Wegener-InstituteData Scientist
Sandra TippenhauerAlfred-Wegener-InstituteEditor
Alfred Wegener Institute for Polar and Marine ResearchAlfred Wegener Institute, Helmholz Centre for Polar and Marine ResearchOwner
polarstern dshipAlfred-Wegener-Institutedship connector

Components

Both thermosalinographs keel 1 and keel 2 consist of SBE21, external thermometer SBE38, NMEA interface box and a pipe system with a flow meter. The system is located in the box keel. The water inflow is in about 11 m depending on the ships draft. Several devices of type SBE21 and SBE38 exist. They are used in rotation and are calibrated regularly. Shown here are the devices which are currently installed.

Subdevices

TSK1


TSK2


Position

Origin Description:no xyz-position given, device located in box keel

Data logging, storage and archiving

Logged parameters

TSK1

ParameterSensor Output TypeUnit
conductivity keelconductivitymS/cm
salinity keelsalinityPSU
sound velocity keelsound velocitym/s
temperature internal keelwater temperature°C

TSK2

ParameterSensor Output TypeUnit
conductivity bowconductivitymS/cm
salinity bowsalinityPSU
sound velocity bowsound velocitym/s
temperature internal bowwater temperature°C

Central geographical ship's position and time standard

UTC time is supplied via NMEA telegram.
Geographical position is supplied via NMEA telegram.

Rawdata storage on board

Data storage in DShip system.

Dship

Uncorrected measurement data.

TSK1

Device name

thermosalinometer keel

Parameters

conductivity keel S/m [S/m], salinity keel [psu], soundvelocity external [m/s], temperature keel [°C], temperature keel internal [°C], TSG_KEEL.SBE21.Sentence

TSK2

Device name

TSK2

Parameters

ConductivityHz [Hz], Conductivity Keel S/m [S/m], ConductivityKHz [kHz], Conductivity ms [ms/cm], density [kg/m3], FirstVoltage [V], salinity Keel 2 [psu], SBE [Hz], SecondVoltage [Hz], Sentence, soundvelocity external [m/s], sound velocity Keel [m/s], TemperatureHz [Hz], temperature Keel [°C], temperature Keel internal [°C], TSK2.SBE21.SBE21

Data archiving on land

Shortly after the cruise the uncorrected thermosalinograph measurement data are available at the DShip onshore system https://dship.awi.de/. As soon as a post-cruise calibration was performed, the data are processed and uploaded in PANGAEA.

File format(s)

*.txt

Calibration certificates

YES

Location of certificates

Fielax GmbH (calibration information in Epic processing reports)

Documentation





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