Please note that operations of the CTD (Conductivity-Temperature-Depth) watersampler requires experienced scientific staff on board. The system is not operated by the ship's crew. Announce operations with the CTD watersampler to AWI-Logistics prior to the cruise and clarify the data transfer after the cruise.

Summary

The CTD probe measures conductivity and temperature along a vertical transect through the water body. The measured parameter are used to calculate the salinity of the water. Additionally, up to 24 water samples can be taken in different water depths during the CTD measurements. A fluorometer, an oxygen sensor and a transmissiometer are attached to the CTD as well. The system is operational up to 2000m water depth.



Manufacturer Seabird
Model SBE911plus mit SBE32
Serial No. SBE11P S/N: 11P52063-0792
Type CTD
REGISTRY-Link ↪ REGISTRY (2361)



Contacts

Name Institution Role
Sandra Tippenhauer Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research Editor

Components

The CTD system consists of the underwater unit SBE 9plus, the deck unit SBE 11plus V2 and the carousel water sampler SBE32 which is equipped with free flow water samplers manufactured by Hydro-Bios. The CTD is outfitted with a double set of temperature (SBE 3plus) and conductivity (SBE 4C) sensors that are calibrated regularly. Additionally, an altimeter, a transmissometer, an oxygen sensor and a fluorometer may be attached to the CTD unit and operated to water depths of 6000m.

On the CTD data aquisition PC in the Messraum following software is installed: aquisition software Seasave (Version V7_19), SBE Data processing software, ManageCTD software packet for cleansing and conversion of the data and Ocean Data View (ODV) for visualization.

Under the table in the Messraum a frame with four backup bottles is installed.


Name Model Serial Number REGISTRY-Link
Fl Chla Wetlabs FLRTD 1365 ↪ REGISTRY (5907)
SBE32 water sampler SBE32 n/a ↪ REGISTRY (2363)
SBE3plus temperature sensor 4918 ↪ REGISTRY (5856)
SBE3plus temperature sensor 5110 ↪ REGISTRY (5859)
SBE4 conductivity sensor 3810 ↪ REGISTRY (5878)
SBE4 conductivity sensor 3827 ↪ REGISTRY (8506)
SBE43 oxygene sensor SBE43 n/a ↪ REGISTRY (4123)
SBE43 oxygene sensor 2007 ↪ REGISTRY (5884)
SBE5 pump 4297 ↪ REGISTRY (5893)
SBE5 pump 5228 ↪ REGISTRY (5894)
Transmissiometer Wetlabs C-Star 435 ↪ REGISTRY (5915)


Position


InfoThe CTD unit is usually stored on the main deck. Electronics and the computer for operation are installed in the Mess- und Registrierraum.
X0.0 (no unit given)
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Y0.0 (no unit given)
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Z0.0 (no unit given)
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Data logging, storage and archiving

Logged parameters

Parameter O2ARegistry Output Type Unit
conductivity conductivity S/m
water temperature water temperature °C
oxygen content oxygen ml/l
pressure pressure dbar
fluorescence fluorescence V
distance to sea floor distance m
transmission transmission %

Central geographical ship's position and time standard


Rawdata storage on board

Data archiving on land

Documentation