Metadata Report for BODC Series Reference Number 554758
Metadata Summary
Problem Reports
Data Access Policy
Narrative Documents
Project Information
Data Activity or Cruise Information
Fixed Station Information
BODC Quality Flags
SeaDataNet Quality Flags
Metadata Summary
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Problem Reports
No Problem Report Found in the Database
Data Access Policy
Public domain data
These data have no specific confidentiality restrictions for users. However, users must acknowledge data sources as it is not ethical to publish data without proper attribution. Any publication or other output resulting from usage of the data should include an acknowledgment.
The recommended acknowledgment is
"This study uses data from the data source/organisation/programme, provided by the British Oceanographic Data Centre and funded by the funding body."
Narrative Documents
Sea-Bird SBE 25 SEALOGGER CTD
The SBE 25 SEALOGGER is a research-quality CTD profiling system used for coastal, estuarine and, can also be a practical option, for deep-water work. It is easily configured in the field for a wide range of auxiliary sensors. The SEALOGGER is self-powered, requires no conductive cable, and is designed for use up to 6800 meters (10,000 psia). It uses the SBE3F temperature and SBE4 conductivity sensors as well as having an external strain gauge pressure sensor. It provides pump-controlled T-C ducted flow, samples at 8 Hz, records internally and provides simultaneous real-time data via its built-in RS-232 interface.
The standard CTD unit comes with a plastic housing (rated to 600 m), although this can be replaced by aluminium housing for depths up to 6800 m.
Specifications
| Parameter | SBE 25 |
|---|---|
| Temperature | Range: -5 to +35 °C Accuracy: 0.002 °C Resolution: 0.0003 °C |
| Conductivity | Range: 0 to 7 S m-1 (0 to 70 mmho cm-1) Accuracy: 0.0003 S m-1 Resolution: 0.00004 S m-1 |
| Strain gauge pressure sensor | Range: 0 to 20, 100, 350, 600, 1000, 2000, 3500, 7000 metres (expressed in metres of deployment depth capability) Accuracy: 0.1% of full scale range Resolution: 0.015% of full scale range |
Options and accessories
Additional sensors can be attached to the CTD, including:
- Dissolved Oxygen (SBE 43 DO Sensor)
- pH (SBE 18 pH Sensor or SBE 27 pH/ORP Sensor)
- fluorescence
- radiance (PAR)
- light transmission
- optical backscatter (turbidity)
The SBE 5T titanium pump can be used in place of SBE 5P pump. Further details can be found in the manufacturer's SBE 25 instrument specification.
RV Clupea 6/2000 CTD Data Documentation
Introduction
Documentation for data collected on R.V. Clupea cruise 6/2000 (10 April - 29 April 2000) by Fisheries Research Services, Aberdeen, UK.
Instrumentation and Protocols
For leg A the temperature and salinity data were collected using a SeaBird Sealogger (SBE25) instrument which was calibrated using bottle samples and thermometer readings to produce the following equations:
T(cal) = T(obs)
C(cal) = 0.960898C(obs) + 1.397208
For leg B the temperature and salinity data were collected using a SeaBird SBE19 (2304) instrument which was calibrated using bottle samples and thermometer readings to produce the following equations:
T(cal) = T(obs)
C(cal) = 1.058977C(obs) - 2.070110
For further information contact:
George Slesser
Ocean Climate Group
FRS, Marine Laboratory Aberdeen
PO Box 101
Victoria Road
Aberdeen AB11 9DB
G.Slesser@marlab.ac.uk
Project Information
No Project Information held for the Series
Data Activity or Cruise Information
Cruise
| Cruise Name | 0600C |
| Departure Date | 2000-04-10 |
| Arrival Date | 2000-04-29 |
| Principal Scientist(s) | Phil A Gillibrand (Fisheries Research Services Aberdeen Marine Laboratory) |
| Ship | FRV Clupea |
Complete Cruise Metadata Report is available here
Fixed Station Information
No Fixed Station Information held for the Series
BODC Quality Control Flags
The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:
| Flag | Description |
|---|---|
| Blank | Unqualified |
| < | Below detection limit |
| > | In excess of quoted value |
| A | Taxonomic flag for affinis (aff.) |
| B | Beginning of CTD Down/Up Cast |
| C | Taxonomic flag for confer (cf.) |
| D | Thermometric depth |
| E | End of CTD Down/Up Cast |
| G | Non-taxonomic biological characteristic uncertainty |
| H | Extrapolated value |
| I | Taxonomic flag for single species (sp.) |
| K | Improbable value - unknown quality control source |
| L | Improbable value - originator's quality control |
| M | Improbable value - BODC quality control |
| N | Null value |
| O | Improbable value - user quality control |
| P | Trace/calm |
| Q | Indeterminate |
| R | Replacement value |
| S | Estimated value |
| T | Interpolated value |
| U | Uncalibrated |
| W | Control value |
| X | Excessive difference |
SeaDataNet Quality Control Flags
The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:
| Flag | Description |
|---|---|
| 0 | no quality control |
| 1 | good value |
| 2 | probably good value |
| 3 | probably bad value |
| 4 | bad value |
| 5 | changed value |
| 6 | value below detection |
| 7 | value in excess |
| 8 | interpolated value |
| 9 | missing value |
| A | value phenomenon uncertain |
| B | nominal value |
| Q | value below limit of quantification |
