Metadata Report for BODC Series Reference Number 1374374
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
Aanderaa SEAGUARD Recording Current Meter
A multi-frequency Doppler current sensor for measuring horizontal current speed and direction. The shallow water (SW), intermediate water (IW) and deep water (DW) models can be deployed to 300 m, 2000 m and 6000 m, respectively. The instrument has a maximum sampling rate of 0.5 Hz, a velocity range of 0 - 300 cm/s, and incorporates an electronic compass and a tilt sensor. A number of additional oceanographic sensors may also be attached.
Further details can be found in the manufacturer's specification sheet.
BODC Processing
Data were received in ASCII format files. 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 |
|---|---|---|---|---|
| Eastward and Northward current velocity | cm.s-1 | LCDAEL01 and LCSAEL01 (direction and speed) | cm.s-1 and ° | Converted by transfer to current direction (Eulerian) in the water column by in-situ current meter and correction to true North, and current speed (Eulerian) in the water column by in-situ current meter |
| Temperature | °C | TEMPPR01 | °C | |
| Salinity | PSU | PSALPR01 | Dimensionless | Not recorded at all moorings |
Following transfer to QXF, the data were visually screened using in house BODC software. Any data considered as suspect were flagged accordingly. The originator's quality control flags were retained during transfer.
Originator's Data Processing
Marine Scotland applied the standard manufacturers' calibrations to all current, temperature and salinity data and produced ASCII files for submission to BODC. Data files (.hmo) were named according to the mooring code and the instrument number. Each current meter file contained eastward and northward velocities and temperature. In cases where the temperature data ran for longer than the current data, the temperature records were saved as separate files appended 't'. Salinity data for each instrument were contained in files appended 's'. Header metadata were collated in additional files (.frm). Speed/Direction distributions (.csd) and harmonic analyses files (.lpr) for the current meter data were also generated.
Project Information
No Project Information held for the Series
Data Activity or Cruise Information
Data Activity
| Start Date (yyyy-mm-dd) | 2013-05-20 |
| End Date (yyyy-mm-dd) | 2013-10-15 |
| Organization Undertaking Activity | Marine Scotland Aberdeen Marine Laboratory |
| Country of Organization | United Kingdom |
| Originator's Data Activity Identifier | 848 |
| Platform Category | subsurface mooring |
Marine Scotland current meter mooring (848), Fair Isle Channel
The Aanderaa recording current meter was initially located at 59° 15.75' N, 01° 31.32' W in a nominal water depth of 99 m. Then it was towed by a fishing boat between 04:40 and 07:20 on 6th August 2013. The new location was 59° 9.11' N, 01° 32.51' W in a nominal water depth of 111 m.
The Aanderaa Seaguard RCM was deployed on 20th May 2013 by Marine Scotland from cruise FRV Scotia 0513S and recovered on 15th October 2013. Instrumentation details are included in the following table.
| Instrument type | Serial Number | Deployment start | Deployment end | Instrument depth (m) | Comments |
|---|---|---|---|---|---|
| Seaguard RCM | 1131 | 20-05-2013 | 08-10-2013 | 37 before being towed; 49 after | Data record split into two; before and after the mooring was towed. |
Related Data Activity activities are detailed in Appendix 1
Cruise
| Cruise Name | 0513S |
| Departure Date | 2013-05-10 |
| Arrival Date | 2013-05-24 |
| Principal Scientist(s) | George Slesser (Marine Scotland Aberdeen Marine Laboratory) |
| Ship | FRV Scotia |
Complete Cruise Metadata Report is available here
Fixed Station Information
Fixed Station Information
| Station Name | Fair Isle 3 |
| Category | Offshore location |
| Latitude | 59° 15.75' N |
| Longitude | 1° 31.32' W |
| Water depth below MSL | 99.0 m |
Fair Isle 3 Fixed Station Document
This site is located 29km SSE of Fair Isle and falls within the operational area of the Brahan Project's Long Range SeaSonde HF radar system which covers the Fair Isle Gap.
The nominal position of the site is 59.2625° N; 1.522° W with a water depth of 99 metres.
Related Fixed Station activities are detailed in Appendix 2
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 |
Appendix 1: 848
Related series for this Data Activity are presented in the table below. Further information can be found by following the appropriate links.
If you are interested in these series, please be aware we offer a multiple file download service. Should your credentials be insufficient for automatic download, the service also offers a referral to our Enquiries Officer who may be able to negotiate access.
| Series Identifier | Data Category | Start date/time | Start position | Cruise |
|---|---|---|---|---|
| 1374386 | Currents -subsurface Eulerian | 2013-05-20 07:40:00 | 59.15183 N, 1.54183 W | FRV Scotia 0513S |
Appendix 2: Fair Isle 3
Related series for this Fixed Station are presented in the table below. Further information can be found by following the appropriate links.
If you are interested in these series, please be aware we offer a multiple file download service. Should your credentials be insufficient for automatic download, the service also offers a referral to our Enquiries Officer who may be able to negotiate access.
| Series Identifier | Data Category | Start date/time | Start position | Cruise |
|---|---|---|---|---|
| 1374442 | Currents -subsurface Eulerian | 2013-10-15 08:00:00 | 59.26267 N, 1.52233 W | FRV Scotia 1313S |
