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| Note |
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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 watersampler to AWI-Logistics prior to the cruise and clarify the data transfer after the cruise. |
Summary
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Components
| Metadata (Metadata Plugin) |
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The system consits of the CTD underwater unit (SBE9), the CTD shipboard equipment (SBE11), the watersampler carousel (SBE32) with 24 x 12 liter bottles (OTE) and the data acquisition computer with installed data acquisition software Seasave (V7.23.1) and data processing software SBE Data Processing (V7.22.5) and ManageCTD.
The CTD underwater unit is equipped with 2 temperature (SBE3plus) and 2 conductivity (SBE4C) sensors by default, which are calibrated on a regular basis. Several external sensors are available, which can be used in water depth up to 6000m: altimeter (Benthos PSA-916D), Fluorometer (Dr. Haardt or Wetlabs EcoFLR), Oxygen sensor (SBE43), Transmissiometer (Weblabs CStar 25cm), mechanical bottom detector. |
Subdevices
| urn | vessel:heincke:ctd_sbe9plus_1015 |
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| contenttype | Summary |
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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. |
| Sensorweb integration |
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| urn | vessel:heincke:ctd_sbe9plus_1015 |
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| contenttype | Metadata |
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| Manufacturer | Seabird |
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| Model | SBE911plus mit SBE32 |
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| Serial No. | SBE11P S/N: 11P52063-0792 |
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| Type | CTD |
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| REGISTRY-Link | ↪ REGISTRY (2361) |
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Contacts
| Sensorweb integration |
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| urn | vessel:heincke:ctd_sbe9plus_1015 |
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| contenttype | Contacts |
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| Name | Institution | Role |
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| Sandra Tippenhauer | Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research | Editor |
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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.
| Sensorweb integration |
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| urn | vessel:heincke:ctd_sbe9plus_1015 |
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| contenttype | Subdevices |
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Position
| Sensorweb integration |
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| urn | vessel:heincke:ctd_sbe9plus_1015 |
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| contenttype | LocalFrame |
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| Info | The CTD unit is usually stored on the main deck. Electronics and the computer for operation are installed in the Mess- und Registrierraum. | | X | 0.0 (no unit given)
(no description given) | | Y | 0.0 (no unit given)
(no description given) | | Z | 0.0 (no unit given)
(no description given) |
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Data logging, storage and archiving
Logged parameters
| Sensorweb integration |
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| urn | vessel:heincke:ctd_sbe9plus_1015 |
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| contenttype | Parameters |
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| Parameter | O2ARegistry Output Type | Unit |
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| 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 | % |
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Central geographical ship's position and time standard
| Metadata (Metadata Plugin) |
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| Time synchronising of the computers is regulated via Windows Domain affiliation. UTC time is supplied via NMEA telegram and processed by Seasave software.
Geographical position is supplied via NMEA telegram and processed by Seasave software. |
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Rawdata storage on board
| Metadata (Metadata Plugin) |
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Mass data: The ManageCTD software produces data files in the mass storage.
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| Metadata list |
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|| root directory | \\polsrv1\data01\CTD ||
|| directory name | CruiseNo \\ e.g. \\ ANT-XXVI-1 ||
|| file name | several files in the following subdirectories: \\ btl \\ conf1 \\ dsp \\ final \\ mat \\ odv \\ work ||
|| Data volume (MB per day) ca | 50 ||
|| Number of files per day ca | 10 || |
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Data archiving on land
| Metadata (Metadata Plugin) |
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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 made available on https://www.pangaea.de/ (for authorized users only). |
| Metadata list |
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|| File format(s) | raw data: *.hex, *.bl, *.hdr, *.xmlcon; processed data: *.txt ||
|| Calibration certificates | YES ||
|| Location of certificates | PI (calibration data is stored in *.xmlcon file) || |
Documentation
| Sensorweb integration |
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| urn | vessel:heincke:ctd_sbe9plus_1015 |
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| contenttype | Resources |
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