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Metadata Report for BODC Series Reference Number 1840936


Metadata Summary

Data Description

Data Category Currents -subsurface Eulerian
Instrument Type
NameCategories
Nortek Aquadopp 3D doppler current meter  current meters; water temperature sensor
Instrument Mounting subsurface mooring
Originating Country United Kingdom
Originator Mr Povl Abrahamsen
Originating Organization British Antarctic Survey
Processing Status banked
Online delivery of data Download available - Ocean Data View (ODV) format
Project(s) BAS Long Term Monitoring and Survey
 

Data Identifiers

Originator's Identifier OP6_1315_2_AQD_9264_2297M
BODC Series Reference 1840936
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2013-03-30 19:15
End Time (yyyy-mm-dd hh:mm) 2015-03-21 11:00
Nominal Cycle Interval 900.0 seconds
 

Spatial Co-ordinates

Latitude 60.56278 S ( 60° 33.8' S )
Longitude 41.63393 W ( 41° 38.0' W )
Positional Uncertainty 0.0 to 0.01 n.miles
Minimum Sensor or Sampling Depth 2297.0 m
Maximum Sensor or Sampling Depth 2297.0 m
Minimum Sensor or Sampling Height 43.0 m
Maximum Sensor or Sampling Height 43.0 m
Sea Floor Depth 2340.0 m
Sea Floor Depth Source DATAHEAD
Sensor or Sampling Distribution Fixed common depth - All sensors are grouped effectively at the same depth which is effectively fixed for the duration of the series
Sensor or Sampling Depth Datum Approximate - Depth is only approximate
Sea Floor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
 

Parameters

BODC CODERankUnitsTitle
AADYAA011DaysDate (time from 00:00 01/01/1760 to 00:00 UT on day)
AAFDZZ011DaysTime (time between 00:00 UT and timestamp)
ACYCAA011DimensionlessSequence number
HEADCM011DegreesOrientation (horizontal relative to true north) of measurement device {heading}
LCDAZZ011Degrees TrueDirection (towards) of water current in the water body
LCEWZZ011Centimetres per secondEastward velocity of water current in the water body
LCNSZZ011Centimetres per secondNorthward velocity of water current in the water body
LCSAZZ011Centimetres per secondSpeed of water current (Eulerian measurement) in the water body
LRZAZZZZ1Centimetres per secondUpward velocity of water current in the water body
PREXPR011DecibarsPressure (measured variable) exerted by the water body by semi-fixed in-situ pressure sensor and corrected to read zero at sea level
PTCHFG011DegreesOrientation (pitch) of measurement platform by triaxial fluxgate compass
ROLLFG011DegreesOrientation (roll angle) of measurement platform by triaxial fluxgate compass
TEMPPR011Degrees CelsiusTemperature of the water body

Definition of Rank

  • Rank 1 is a one-dimensional parameter
  • Rank 2 is a two-dimensional parameter
  • Rank 0 is a one-dimensional parameter describing the second dimension of a two-dimensional parameter (e.g. bin depths for moored ADCP data)

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

Nortek Aquadopp Open Water Current Meter

This instrument provides 3D acoustic doppler current measurements along with standard measurements of temperature, pressure, tilt and direction. It can be used in real time measurement situations or can log to an internal recorder powered by internal batteries. It can also be configured to measure surface wave height, period and direction concurrently. It has the unique feature of being run in 'diagnostic' mode when set to collect data at 1 Hz frequency in user specified intervals. This allows studies of mooring motion and the performance of other current meters to be conducted. It can be set in various configurations with titanium housings for deployment at greater depths.

Standard Measured Parameters

  • 3D current velocity (East/North/Up, X/Y/Z or Beam 1/2/3)
  • Acoustic signal strength (Beam 1/2/3)
  • Compass
  • Tilt
  • Temperature
  • Pressure
  • Battery voltage
  • Status code
  • Error code

Surface wave monitoring

The standard Aquadopp is suitable for measuring surface wave height, period, and direction, which are calculated using the PUV method whereby spectra are estimated based on a combination of the pressure signal recorded by the instrument (P) and two horizontal components of the wave orbital velocity (U and V). More specifically, the pressure signal is used to provide an estimate of the wave frequency spectrum. The energy in this spectrum is then used to estimate wave height and period. The measurements of the wave orbital velocities are used to provide an estimate of the wave direction. Since these estimates are based on the distribution of wave energy and are not direct measurements of the free surface, they should be considered inferred estimates.

Both the dynamic pressure and the orbital velocities are driven by surface waves. The signals that are associated with these properties are complicated by the fact that they attenuate (that is the signals are weaker) with depth. The exact behaviour of the attenuation is determined by the water depth and the wavelength being observed. The greater the water depth the greater the attenuation; likewise, the shorter the wavelength (or higher the frequency of the wave) the greater the attenuation for a given water depth. This means that the estimation of wave parameters is limited by both water depth and wave frequency.

Specifications

Water Velocity Measurement
Range ± 5 m/s (standard 300 m version)
± 3 m/s (3000 m and 6000 m versions - higher ranges available on request)
Accuracy 1% of measured value ± 0.5 cm/s
Max. sampling rate 1 Hz, 4 Hz also available on request (standard version)
Internal sampling rate 23 Hz
Measurement Area
Measurement cell size 0.75 m
Measurement cell position 0.35 - 5.0 m
Default position 0.35 - 1.8 m
Doppler uncertainty (noise)
Typical 0.5 - 1.0 cm/s
At 1 Hz sampling rate 1.5 cm/s
Echo Intensity
Acoustic frequency 2 MHz
Resolution 0.45 dB
Dynamic range 90 dB
Sensors
Temperature Thermistor embedded in head
Range -4°C to 40°C
Accuracy/resolution 0.1°C / 0.01°C
Time response 10 min
Compass Magnetometer
Accuracy/Resolution 2° / 0.1° for tilt < 20°
Tilt Liquid level
Maximum tilt 30°
Up or down Automatic detect
Pressure Piezoresistive
Range 0 - 300 m (standard), 0 - 3000 m or 0 - 6000 m
Accuracy/resolution 0.5%
Analogue Inputs
No. of channels 2
Voltage supply 12 V
Voltage input 16 bit A/D
Materials
Standard version Delrin with titanium screws
3000 m version Delrin with titanium screws
6000 m version Titanium with Delrin transducer head
Environmental
Operating temperature -4°C to 40°C
Dimensions
Cylinder 568 mm x 75 mm (standard)
619 mm x 84 mm (3000 m version)
625 mm x 84 mm (6000 m version)
Weight in air 3.5 kg (standard)
3.6 kg (3000 m version)
7.6 kg (6000 m version)
Weight in water Neutral (standard)
1.2 kg (3000 m version)
4.8 kg (6000 m version)

Further details can be found in the manufacturer's specification sheets for the Aquadopp, Aquadopp 3000 and Aquadopp 6000.

BODC Processing

Data processing

The data arrived at BODC as individual .mat files containing data collected on moorings OP1, OP2, OP3, OP4, OP5, OP6, OP7, CI1 and CI2. They were submitted as part of an accession which includes data from several mooring instruments e.g. ADCP, Aquadopp, RCM8, RCM11, RBR, SBE37 and SBE39.

Reformatting

The parameters from the originator's files were reformatted to internal format using BODC standard procedures.

The following parameters from the Aquadopp data were not reformatted as they are considered metadata or are not environmental variables: date, depth (m), botdepth (m), lat/lon, mooringname, nomdepth (m), serial_no, type, temp_offset_applied and press_offset_applied.

The table below includes the final variables and how they were mapped to the appropriate BODC parameter codes:

Originator's Variable Originator's Units BODC Parameter Code BODC Units Comments
dir deg LCDAZZ01 deg -
heading deg HEADCM01 deg -
pitch deg PTCHFG01 deg -
pressure dbar PREXPR01 dbar -
roll deg ROLLFG01 deg -
speed cm s-1 LCSAZZ01 cm s-1 -
temp C TEMPPR01 C -
u cm s-1 LCEWZZ01 cm s-1 -
v cm s-1 LCNSZZ01 cm s-1 -
w cm s-1 LRZAZZZZ cm s-1 -
tilt deg ZNTHSS01 deg Tilt was not included in the data for 2017-2019 mooring deployments

Battery voltage and amplitude channels were reformatted to help with the screening process and are not included in the final file but are avaiable upon request.

None of the parameters required a unit conversion and no derived parameters were created during reformatting.

Screening

The reformatted data were visualised using in house software and spikes or improbable values were flagged accordingly.

Originator's Data Processing

Sampling Strategy

Sampling was carried out as part of the BAS LTMS (British Antarctic Survey Long Term Monitoring and Survey) until 2016. From 2016 onwards the moorings are split between 'The Ocean Regulation of Climate by Heat and Carbon Sequestration and Transports (ORCHESTRA)' project and 'Dynamics of the Orkney Passage Outflow (DynOPO)' project.

The projects involve the deployment of moorings CI1, CI2, OP1, OP2, OP3, OP4, OP5, OP6 and OP7 in the Southern Ocean, situated north of Coronation Island and the Orkney Passage in the Weddell and Scotia Sea.

Moorings CI1 and CI2 were deployed from 2005 to 2007 and moorings OP1, OP2, OP3, OP4, OP5 and OP6 have been continuously maintained since 2007 with the addition of OP7 in 2015.

Aquadopp Deep Water current meters data have been collected at 15 minute intervals since 2011. Gaps in the series may be related to either instruments not being recovered, or data not being collected due to instrument malfunction.

Data Processing

Little information is known with regards to the exact details of the calibrations carried out on the mooring data. Originator's data processing, visualisation and calibration were done through the use of Matlab scripts written for Matlab R2014b version.

The originator did not apply corrections to current velocity, direction or components for magnetic variation for the data from 2011 to 2013 as the variation in this region is less than one degree.

According to the originator, it has been found that in some conditions Aquadopp current meters overread current speeds compared with a mechanical vector measuring current meter and there is considerable uncertainty associated with the exact corrections that should be applied. Because of the continuing uncertainties of how best to correct for the differing characteristics of these instruments, no correction has been applied to these data.

Offsets applied to the data were:

Mooring Time Period Depth (m) Serial Number Offset Applied Channel
2011 - 2014 Deployment
OP1 2011-03-26 - 2014-04-01 1826 5993

-0.0178

-13

Temperature

Pressure

OP1 2011-03-26 - 2014-04-01 2170 6180

0.0501

-8

Temperature

Pressure

OP1 2011-03-26 - 2014-04-01 2944 6236

0.0349

-64

Temperature

Pressure

OP1 2011-03-26 - 2014-04-01 3607 6198

-0.02

-21

Temperature

Pressure

2011 - 2013 Deployment
OP2 2011-03-27 - 2013-03-31 1700 6263

0.02

-12

Temperature

Pressure

OP2 2011-03-27 - 2013-03-31 3062 6112

0.02

-12

Temperature

Pressure

OP3 2011-03-25 - 2013-03-31 1705 6251

0.08

-12

Temperature

Pressure

OP4 2011-03-27 - 2013-04-03 1844 6226

0.016

-23

Temperature

Pressure

OP6 2012-04-02 - 2013-03-30 2009 9250

0.07

-22

Temperature

Pressure

OP6 2012-04-02 - 2013-03-30 2259 9264

0.035

-22

Temperature

Pressure

2013 - 2015 Deployment
OP1 2013-04-02 - 2015-03-20 3574 6198

-0.020

-19

Temperature

Pressure

OP1 2013-04-02 - 2015-03-20 2916 6236

-0.0349

-70

Temperature

Pressure

OP1 2013-04-02 - 2015-03-20 2143 6180

-0.0501

-15

Temperature

Pressure

OP1 2013-04-02 - 2015-03-20 1798 5993

-0.0178

-38

Temperature

Pressure

OP1 2013-04-02 - 2015-03-20 2970 6112

-0.010

-12

Temperature

Pressure

OP2 2013-04-01 - 2015-03-22 2970 6112

-0.010

-12

Temperature

Pressure

OP3 2013-04-01 - 2015-03-22 1449 6000

-0.033

-16

Temperature

Pressure

OP4 2013-04-03 - 2015-03-21 1839 6226

-0.016

-15

Temperature

Pressure

OP5 2013-03-29 - 2015-03-21 3004 9556

-0.0482

-19

Temperature

Pressure

OP6 2013-03-30 - 2015-03-21 2041 9250 -0.060 Temperature
2015 - 2017 Deployment
OP1 2015-04-05 - 2017-04-15 3589 8111

0.0382

71.5095

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 3509 6260

0.0984

29.8384

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 3409 11979

0.1097

26.7369

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 3309 6203

0.0145

8.3123

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 3209 6244

0.0445

8.0077

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 3109 11997

0.0596

32.8177

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 3009 6275

0.0071

122.5084

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 2909 8352

0.0825

1.7536

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 2809 8088

0.0684

7.2869

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 2709 5883

0.0699

-19.6149

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 2609 6178

0.0236

2.8005

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 2409 8355

0.0804

-15.5835

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 2259 6182

0.085

-29.1805

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 2109 12020

0.0901

28.2211

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 1959 8351

0.0706

1.2935

Temperature

Pressure

OP1 2015-04-05 - 2017-04-15 1809 6273

0.0499

0.6167

Temperature

Pressure

OP2 2015-04-04 - 2017-04-14 2990 1430

0.0333

153.5029

Temperature

Pressure

OP2 2015-04-04 - 2017-04-14 2907 8097

0.0305

-19.4836

Temperature

Pressure

OP2 2015-04-04 - 2017-04-14 2807 1415

0.0447

12.9683

Temperature

Pressure

OP2 2015-04-04 - 2017-04-14 2707 6262

-0.0065

-16.1659

Temperature

Pressure

OP2 2015-04-04 - 2017-04-14 2507 1404

0.0255

-40.7168

Temperature

Pressure

OP2 2015-04-04 - 2017-04-14 2407 8360

0.5566

15.344

Temperature

Pressure

OP2 2015-04-04 - 2017-04-14 2257 6181

0.0813

3.1019

Temperature

Pressure

OP2 2015-04-04 - 2017-04-14 2107 12053

0.0813

14.7062

Temperature

Pressure

OP2 2015-04-04 - 2017-04-14 1957 8093

0.0416

13.3101

Temperature

Pressure

OP2 2015-04-04 - 2017-04-14 1807 6242

-0.0145

4.0409

Temperature

Pressure

OP2 2015-04-04 - 2017-04-14 1657 6213

0.0868

1.8819

Temperature

Pressure

OP2 2015-04-04 - 2017-04-14 1507 8362

-0.0046

5.5219

Temperature

Pressure

OP3 2015-04-03 - 2017-04-15 1688 9378

0.0675

-58.8189

Temperature

Pressure

OP3 2015-04-03 - 2017-04-15 1438 9392

0.0447

-8.68

Temperature

Pressure

OP5 2015-04-06 - 2017-04-14 3346 6000

0.0369

-49.5278

Temperature

Pressure

OP5 2015-04-06 - 2017-04-14 3296 6236

0.0364

48.5972

Temperature

Pressure

OP5 2015-04-06 - 2017-04-14 3196 5993

-0.0151

11.219

Temperature

Pressure

OP5 2015-04-06 - 2017-04-14 3096 6112

-0.0141

-9.7246

Temperature

Pressure

OP5 2015-04-06 - 2017-04-14 2946 6263

0.0533

22.2441

Temperature

Pressure

OP5 2015-04-06 - 2017-04-14 2796 6180

0.0503

-16.6151

Temperature

Pressure

OP5 2015-04-06 - 2017-04-14 2646 6198

-0.0259

-11.5228

Temperature

Pressure

OP5 2015-04-06 - 2017-04-14 2496 6226

0.0162

-13.3585

Temperature

Pressure

OP6 2015-04-06 - 2017-04-14 2288 9264

0.0389

Temperature

OP7 2015-04-09 - 2017-04-15 3015 6276

0.0426

32.4043

Temperature

Pressure

OP7 2015-04-09 - 2017-04-15 2935 11990

0.0944

7.9064

Temperature

Pressure

OP7 2015-04-09 - 2017-04-15 2835 12016

0.102

24.2884

Temperature

Pressure

OP7 2015-04-09 - 2017-04-15 2735 6224

0.0151

7.3328

Temperature

Pressure

OP7 2015-04-09 - 2017-04-15 2535 12047

0.0739

11.2592

Temperature

Pressure

OP7 2015-04-09 - 2017-04-15 2435 8080

0.0634

14.1018

Temperature

Pressure

OP7 2015-04-09 - 2017-04-15 2285 12010

0.1066

22.433

Temperature

Pressure

OP7 2015-04-09 - 2017-04-15 2135 6225

0.0673

5.0642

Temperature

Pressure

OP7 2015-04-09 - 2017-04-15 1835 11992

-0.0931

28.3732

Temperature

Pressure

OP7 2015-04-09 - 2017-04-15 1685 8556

0.0496

0.0617

Temperature

Pressure

OP7 2015-04-09 - 2017-04-15 1535 8059

-0.0139

1.3122

Temperature

Pressure

2017 - 2019 Deployment
OP1 2017-04-18 - 2019-01-29 3646 6180

0.0503

-26.4548

Temperature

Pressure

OP1 2017-04-18 - 2019-01-29 2983 6112

-0.0140

5.4291

Temperature

Pressure

OP1 2017-04-18 - 2019-01-29 2210 6000

0.0319

1.3410

Temperature

Pressure

OP1 2017-04-18 - 2019-01-29 1876 5993

-0.0162

-25.0159

Temperature

Pressure

OP2 2017-04-18 - 2019-01-27 2993 6236

0.0364

-67.8422

Temperature

Pressure

OP2 2017-04-18 - 2019-01-27 2332 6226

0.0165

4.5650

Temperature

Pressure

OP2 2017-04-18 - 2019-01-27 1643 6198

-0.0259

-15.0367

Temperature

Pressure

OP3 2017-04-19 - 2019-01-29 1690 8556

0.0496

-11.0776

Temperature

Pressure

OP3 2017-04-19 - 2019-01-29 1437 5424

-

-4.5370

Temperature

Pressure

OP4 2017-04-21 - 2019-01-29 2902 9264

0.0389

-30.2441

Temperature

Pressure

OP4 2017-04-21 - 2019-01-29 2199 9250

0.0825

26.0381

Temperature

Pressure

OP4 2017-04-21 - 2019-01-29 1841 6263

0.0511

58.0802

Temperature

Pressure

OP5 2017-04-19 - 2019-01-29 3341 12016

0.1020

12.8185

Temperature

Pressure

OP5 2017-04-19 - 2019-01-29 2987 12010

0.1061

17.8358

Temperature

Pressure

OP6 2017-04-20 - 2019-01-30 2264 12053

0.0813

-

Temperature

Pressure

OP6 2017-04-20 - 2019-01-30 1910 12020

0.0901

-

Temperature

Pressure


Project Information

BAS Long Term Monitoring and Survey

Introduction

The Long Term Monitoring and Survey project (LTMS) has been running since the British Antarctic Survey (BAS) was created. This project is one of the BAS core projects, with several groups of scientists collecting various types of data e.g biological, geological, atmospheric, among others.

Data collection is achievable through a wide scope of instruments and platforms, e.g. the Antarctic research stations, autonomous instrument platforms deployed on or from BAS research ships, BAS aircrafts, satellite remote sensing and others.

Scientific Objectives

This project was implemented in order to measure change and variability in the Earth system. Its long term duration allows for the monitoring of processes that could be missed in shorter term studies and experiments. The data collected is also used to check and improve the reliability of models used to stimulate and predict the behavior of the Earth system.

The main objectives are:

  • Topographic survey
  • Geosciences survey
  • Biological survey and monitoring
  • Atmospheric and oceanographic monitoring

Data Availability

The data sets obtained through this project are available to the academic community.


Data Activity or Cruise Information

Data Activity

Start Date (yyyy-mm-dd) 2013-03-30
End Date (yyyy-mm-dd) 2015-03-23
Organization Undertaking ActivityBritish Antarctic Survey
Country of OrganizationUnited Kingdom
Originator's Data Activity IdentifierOP6
Platform Categorysubsurface mooring

Orkney Passage mooring 6 (OP6)

The mooring was deployed at the following positions:

Organisation Undertaking Activity British Antarctic Survey, Cambridge
Country of Organisation United Kingdom
Originator's Data Activity Identifier OP6
Platform Category Subsurface mooring
Latitude (+ve N) -60.5629
Longitude (+ve E) -41.6327
Water Depth (m) 2309

The mooring was deployed on the Orkney Passage on cruise JR20130317 (JR252B, JR272B, JR273A, JR281, UKD-4) on 30 March 2013 and recovery was done on cruise JR20150309 (JR272D, JR310) on 21 March 2015.

The table below lists the instruments deployed on this mooring:

Instrument type Serial Number Data start (UT) Data end (UT) Instrument depth (m)
Aquadopp 9250 2013-03-30 16:30:00 2015-03-23 16:59:35 2041
Aquadopp 9264 2013-03-30 16:30:00 2015-03-23 16:43:52 2297
Sea Bird SBE37 8267 2013-03-30 17:30:01 2015-03-23 14:07:07 2321

Related Data Activity activities are detailed in Appendix 1

Cruise

Cruise Name JR20130317 (JR252B, JR272B, JR273A, JR281, UKD-4)
Departure Date 2013-03-17
Arrival Date 2013-04-27
Principal Scientist(s)Jean-Baptiste Sallee (British Antarctic Survey)
Ship RRS James Clark Ross

Complete Cruise Metadata Report is available here


Fixed Station Information

Fixed Station Information

Station NameOrkney Passage OP6
CategoryOffshore location
Latitude60° 33.74' S
Longitude41° 37.93' W
Water depth below MSL2309.0 m

Orkney Passage OP6 site

Site OP6 is part of the Orkney Passage mooring array which is an activity covered by the Long Term Monitoring and Survey British Antarctic Survey's (BAS) programme. The data collection is the result of an ongoing collaboration between BAS and the Lamont-Doherty Earth Observatory (LDEO).

This site has been occupied since 2012, the recovery/deployment history, including position details, is presented below:

Deployed Recovered
Year Cruise Year Cruise Latitude (+veN) Longitude (+ve E) Water Depth (m)
2012 JR20120326 (JR254E, JR257, JR272A) 2013 JR20130317 (JR272B, JR273A, JR281, UKD-4) -60.5623 -41.6322 2309
2013 JR20130317 (JR272B, JR273A, JR281, UKD-4) 2015 JR20150309 (JR272D, JR310) -60.5629 -41.6327 2309
2015 JR20150309 (JR272D, JR310) 2017 JR16005 -60.5621 -41.6339 2338

Detailed information for each deployment can be accessed from the OP6 Data Activity document.

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: OP6

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 IdentifierData CategoryStart date/timeStart positionCruise
1840948Currents -subsurface Eulerian2013-03-30 19:15:0060.56278 S, 41.63393 WRRS James Clark Ross JR20130317 (JR252B, JR272B, JR273A, JR281, UKD-4)
1840371Hydrography time series at depth2013-03-30 19:15:0160.56278 S, 41.63393 WRRS James Clark Ross JR20130317 (JR252B, JR272B, JR273A, JR281, UKD-4)

Appendix 2: Orkney Passage OP6

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 IdentifierData CategoryStart date/timeStart positionCruise
1362834Currents -subsurface Eulerian2012-04-02 20:15:0060.56315 S, 41.63217 WRRS James Clark Ross JR20120327 (JR254E, JR257, JR272A)
1362846Currents -subsurface Eulerian2012-04-02 20:15:0060.56315 S, 41.63217 WRRS James Clark Ross JR20120327 (JR254E, JR257, JR272A)
1223533Hydrography time series at depth2012-04-02 20:15:0060.56315 S, 41.63217 WRRS James Clark Ross JR20120327 (JR254E, JR257, JR272A)
1840948Currents -subsurface Eulerian2013-03-30 19:15:0060.56278 S, 41.63393 WRRS James Clark Ross JR20130317 (JR252B, JR272B, JR273A, JR281, UKD-4)
1840371Hydrography time series at depth2013-03-30 19:15:0160.56278 S, 41.63393 WRRS James Clark Ross JR20130317 (JR252B, JR272B, JR273A, JR281, UKD-4)
1814106CTD or STD cast2015-03-21 06:42:0860.5711 S, 41.6281 WRRS James Clark Ross JR20150309 (JR272D, JR310)
1805766Currents -subsurface Eulerian2015-03-21 06:42:3160.57106 S, 41.6281 WRRS James Clark Ross JR20150309 (JR272D, JR310)
1814616CTD or STD cast2015-04-06 09:52:4760.5624 S, 41.633 WRRS James Clark Ross JR20150309 (JR272D, JR310)
1806272Currents -subsurface Eulerian2015-04-06 09:53:0260.56171 S, 41.63373 WRRS James Clark Ross JR20150309 (JR272D, JR310)
1894762Currents -subsurface Eulerian2015-04-06 13:40:0060.56212 S, 41.63388 WRRS James Clark Ross JR20150309 (JR272D, JR310)
1894774Currents -subsurface Eulerian2015-04-06 13:40:0060.56212 S, 41.63388 WRRS James Clark Ross JR20150309 (JR272D, JR310)
1881272Hydrography time series at depth2015-04-06 13:40:0160.56212 S, 41.63388 WRRS James Clark Ross JR20150309 (JR272D, JR310)
2022408Currents -subsurface Eulerian2017-04-20 14:40:0060.56277 S, 41.63182 WRRS James Clark Ross JR16005
2022421Currents -subsurface Eulerian2017-04-20 14:40:0060.56277 S, 41.63182 WRRS James Clark Ross JR16005
2022549Hydrography time series at depth2017-04-20 14:40:0160.56277 S, 41.63182 WRRS James Clark Ross JR16005