Metadata Report for BODC Series Reference Number 572439
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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Time Co-ordinates(UT) |
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Parameters |
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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
Valeport CTD 600
Background
The Valeport CTD 600 is designed for Continental Shelf operation and permits the accurate measurement of seawater Conductivity and Temperature against a Depth profile. The results obtained are applicable to many fields of scientific research. The meter is particularly suited to the obtaining of Temperature and Salinity profiles for the computation of the Speed of Sound through water, as required for the calibration of survey echo sounders and acoustic navigation systems.
More information may be found:
Click here for an Oceanscan instrument description
Click here for a pdf stored by BODC.
Parameters
| Parameter | Sensor Type | Operating Range | Accuracy | Display Resolution | Response Time |
|---|---|---|---|---|---|
| Conductivity | Dual inductive coils | 0 - 60 mmho cm-1 | Better than 0.2 mmho cm-1 | 0.01 mmho cm-1 | - |
| Temperature | Linearised Thermistor | -5 to +40 °C | Better than 0.2 °C | 0.01 °C | < 3 secs to 98% |
| Pressure | Strain gauge pressure transducer | 0 to 10, or 0 to 20 bar standard, (100 or 200 m) Optional, 0 to 50 bar (500 m) Note, 10 bar fitted in units with 50 m cables | +/- 0.3% of full scale | 0.1 m | - |
RV Scotia 5/2001 CTD Data Documentation
Instrumentation
The instrument used was a Valeport 600 MK3 CTD.
Details of the sensors on the CTD are -
| Manufacturer | Sensor | Serial No. | Manufacturer Cal. Date |
|---|---|---|---|
| Valeport | Pressure | 751567 | 01 Mar 2001 |
| Valeport | Temperature | 107P | 01 Mar 2001 |
| Valeport | Conductivity | P05056 | 01 Mar 2001 |
Pressure Sensor:
Tx range dBar 600
Set Range dBar 500
Valeport Calibration Certificate Number C12206
NOTE: These data have not had any calibrations applied. The CTD machine was used as supplied by the hirer. Comparisons of data collected nearby (notably station 204) by other institutes has show the data collected to be rather high. Therefore the salinity data should be used with caution.
Information
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 | 0501S |
| Departure Date | 2001-03-17 |
| Arrival Date | 2001-03-27 |
| Principal Scientist(s) | Alistair D McIntosh (Fisheries Research Services Aberdeen Marine Laboratory) |
| Ship | FRV Scotia |
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 |
