Metadata Report for BODC Series Reference Number 1039477
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
Data Description |
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Data Identifiers |
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Time Co-ordinates(UT) |
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Spatial Co-ordinates | |||||||||||||||||||||||||
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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
Vemco Minilog8 TR temperature logger
The VEMCO Minilog8-TR is a miniature data logger that records temperature at a user programmed time interval. It is housed in a waterproof cylinder and the temperature sensor is mounted on a protruding stainless steel probe.
Specifications
Memory | 16 or 64k memory size, approximately 8000 readings stored in non-volatile Electrically Erasable Programmable Read Only Memory (EEPROM). Logging duration is between 1 second to 6 hours for up to 5 years depending on the logging interval. |
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Data Retention | 20 years. |
Temperature Range | -5 to 40 °C; 0.1-0.2 °C resolution; ±0.2-0.3 °C accuracy with factory calibration. |
Maximum Depth | 680 m |
Communication Link | Infrared LED. No external connections are required. Full memory downloads in 3 to 6 minutes. |
Battery | Internal lithium battery with life of up to 5 years or up to 700- 1000 full deployments. |
Further details can be found in the manufacturer's specification sheet.
BODC Processing
Data were received in ASCII format files. Pressure offsets were applied to the data where indicated as necessary by the originator. The series were transferred to BODC's in-house format. The following table shows how the variables within the file were mapped to the appropriate BODC parameter codes.
Original parameter name | Original Units | BODC Parameter Code | BODC Units | Comments |
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Pressure | decibars | PREXPS01 | decibars | |
Depth | m | DEPHFP01 | m | Not derived for all moorings |
Temperature | °C | TEMPPR01 | °C | Not measured at all moorings |
Following reformatting, the data were visually screened. Any data considered suspect were flagged accordingly. Flags from the originator's quality control were retained during transfer.
Originator's Data Processing
Marine Scotland applied the standard manufacturers' calibrations to all water level recorder (WLR)/Minilogger data and produced ASCII files for submission to BODC. Data files (.hmo) were named according to the mooring code and the instrument number. Files contained water level data in meters (WLR) or decibars (Minilogger). Minilogger files also contained temperature data. Header metadata were collated in additional files (.frm).
Project Information
No Project Information held for the Series
Data Activity or Cruise Information
Data Activity
Start Date (yyyy-mm-dd) | 2009-07-21 |
End Date (yyyy-mm-dd) | 2009-08-04 |
Organization Undertaking Activity | Marine Scotland Aberdeen Marine Laboratory |
Country of Organization | United Kingdom |
Originator's Data Activity Identifier | 775w |
Platform Category | fixed benthic node |
FRS Minilogger (775w) from Pentland Firth
A bottom mounted, pressure recording VEMCO Minilogger was deployed by Marine Scotland, Aberdeen Marine Laboratory in the Pentland Firth (58° 39.00'N 03° 19.37'W). The instrument was deployed on 21/07/2009 and recovered on 04/08/2009, during the FRV Scotia cruise 1009S. The station had a nominal water depth of 28m.
The mooring consisted of the following instruments
Instrument type | Series Number | Serial Number | Deployment start | Deployment end | Instrument depth (m) | No. Readings/Hour | Comments |
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VEMCO Minilogger | 775w | 3383 | 21/07/2009 | 04/08/2009 | 28 | 20 | - |
Cruise
Cruise Name | 1009S |
Departure Date | 2009-07-19 |
Arrival Date | 2009-08-05 |
Principal Scientist(s) | Peter Hayes (Marine Scotland 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 |
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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 |
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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 |