Metadata Report for BODC Series Reference Number 1640669

• 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

Problem Reports

No Problem Report Found in the Database

Data Access Policy

Open Data supplied by Natural Environment Research Council (NERC)

You must always use the following attribution statement to acknowledge the source of the information: "Contains data supplied by Natural Environment Research Council."

Narrative Documents

Sea-Bird SBE 37-SMP MicroCAT

The SBE 37-SMP MicroCAT is a high accuracy conductivity and temperature recorder (pressure optional) with Serial interface, internal battery, non-volatile FLASH Memory and integral Pump. The Integral Pump runs for 1 second each time the MicroCAT samples, improving the conductivity response and giving improved anti-foul protection.

Designed for moorings and other long-duration, fixed-site deployments, MicroCATs have non-corroding titanium housings rated for operation to 7000 meters or pressure sensor full scale-range. Communication with the MicroCAT is over an internal, 3-wire, RS-232C link. The MicroCAT's aged and pressure-protected thermistor has a long history of exceptional accuracy and stability (typical drift is less than 0.002°C per year). Electrical isolation of the conductivity electronics eliminates any possibility of ground-loop noise.

Specifications

Further information can be found via the following link: Sea-Bird SBE 37-SMP MicroCAT Datasheet

Wyville Thomson Ridge Moored SBE 37 - Processing by BODC

Data from one SBE37 MicroCAT arrived at BODC in one ASCII file. The following table shows how the variables within the files were mapped to appropriate BODC parameter codes:

The data were screened using BODC in house software and no quality control flags were added as none of the data were considered improbable.

Wyville Thomson Ridge Moored SBE37 - Originator's Processing

Sampling Strategy

A SBE37 MicroCAT attached to a fixed mooring was deployed from cruise RRS Discovery D379 between 7 August 2012 to 8 May 2013 as part of a long term monitoring programme on the Wyville Thompson Ridge.

Data Processing

Data from the SBE37 MicroCAT was downloaded in binary format. The file was then converted to ASCII and submitted to BODC in a single file. No further post-processing or calibrations took place at the Scottish Association for Marine Science (SAMS) before submitting the data to BODC.

References

Griffiths C. R. et al. , (2012). RRS Discovery Cruise D379, 31 Jul 2012 - 17 Aug 2012. Southampton to Reykjavík - the Extended Ellett Line. Scottish Association for Marine Science, 184pp. (Scottish Marine Institute, Oban, 14-23)

Project Information

No Project Information held for the Series

Data Activity or Cruise Information

Data Activity

Wyville Thomson Ridge - Ridge Top Mooring Data Activity

This mooring was deployed as part of a long-term monitoring programme examining transport across the Wyville Thomson Ridge.

The instruments were attached to a leaded seasteel mooring with two small glass spheres at the top. The mooring was fitted with an acoustic release which was connected to a chain anchor using L/L chain. The Teledyne ADCP unit was fitted into a 40 inch syntactic sphere with an Argos beacon. The table below indicates the moorings attachments:

The research leading to these results has received funding from NACLIM, a project of the European Union 7th Framework Programme (FP7 2007-2013) under grant agreement n.308299.

Related Data Activity activities are detailed in Appendix 1

Cruise

Complete Cruise Metadata Report is available here

Fixed Station Information

Fixed Station Information

Wyville Thomson Ridge

The Wyville Thomson Ridge marks the boundary between the Rockall Trough and the Faroe-Shetland Channel. The Ridge is an important area for the study of deep ocean circulation and has been the focus of many studies (particularly CTD surveys), by various institutions, since 1975.

The Wyville Thomson Ridge is also a location of focused mooring activities led by the Scottish Association for Marine Science (SAMS). See Wyville Thomson Ridge Moored ADCP for specific details.

Measurements made along and around the Wyville Thomson Ridge lie within a box bounded by co-ordinates 59° 40' N, 9° 54' W at the southwest corner and 60° 50' N, 5° 00' W at the northeast corner.

Related Fixed Station activities are detailed in Appendix 2

Fixed Station Information

Wyville Thomson Ridge Acoustic Doppler Current Profiler (ADCP) Mooring

Introduction

The Wyville Thomson Ridge is an area of the North Atlantic Ocean floor running in a south easterly direction from the Faroe Bank to the Scottish continental shelf. The most eastern pathway across the Wyville Thomson Ridge marks a noteable boundary between cold and warm deep water at the southern edge of the Faroe-Shetland Channel. To enable monitoring of transport across this region the Scottish Association for Marine Science (SAMS) deployed a succession of Acoustic Doppler Current Profiler (ADCP) moorings (occasionally with auxilliary instrumentation) in the region between 2003 and 2013. These moorings were situated approximately 1.2 km north-west of the formal Faroe end of the Fair Isle-Munken (FIM) line (at approximately 60.2°N, 8.9°W) and constitute part of a larger long term monitoring programme studying the nature of flow across the ridge, and the causes of its variability.

Moored data summary

The following table summarises the SAMS mooring deployments at the Wyville Thomson Ridge:

References

Sherwin, T.J., Griffiths, C.R., Inall, M.E., and Turrell, W.R., 2008. Quantifying the overflow across the Wyville Thomson Ridge into the Rockall Trough, Deep-Sea Research, 55, 4, 396-404.

Related Fixed Station activities are detailed in Appendix 3

BODC Quality Control Flags

The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:

SeaDataNet Quality Control Flags

The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:

Appendix 1: WTR Ridge Top Mooring Data Activity

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.

Appendix 2: Wyville Thomson Ridge

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.

Appendix 3: Wyville Thomson Ridge Moored ADCP

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.