Attention:
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
Contacts
Components
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.
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
Position
Data logging, storage and archiving
Logged parameters
Central geographical ship's position and time standard
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.
Geographical position is supplied via NMEA telegram and processed by Seasave software.
Rawdata storage on board
Mass data: The ManageCTD software produces data files in the mass storage.
root directory |
\\polsrv1\data01\CTD |
|---|---|
directory name |
CruiseNo |
file name |
several files in the following subdirectories: |
Data volume (MB per day) ca |
50 |
Number of files per day ca |
10 |
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 made available on https://www.pangaea.de/
(for authorized users only).
(for authorized users only).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) |