Metadata Report for BODC Series Reference Number 1076943

Metadata Summary

Data Description
Data Category CTD or STD cast
Instrument Type
NameCategories
Neil Brown MK3 CTD  CTD; water temperature sensor; salinity sensor; dissolved gas sensors
SeaTech transmissometer  transmissometers
Chelsea Technologies Group Aquatracka fluorometer  fluorometers
Instrument Mounting lowered unmanned submersible
Originating Country United Kingdom
Originator Dr Ken Jones
Originating Organization Scottish Association for Marine Science
Processing Status QC in progress
Project(s) BENBO
 

Data Identifiers

Originator's Identifier CTDP07
BODC Series Reference 1076943
 

Time Co-ordinates(UT)
Start Time (yyyy-mm-dd hh:mm) 1999-05-30 20:19
End Time (yyyy-mm-dd hh:mm) -
Nominal Cycle Interval 1.0 decibars
 

Spatial Co-ordinates

Latitude 57.51267 N ( 57° 30.8' N )
Longitude 12.24300 W ( 12° 14.6' W )
Positional Uncertainty 0.0 to 0.01 n.miles
Minimum Sensor Depth 0.5 m
Maximum Sensor Depth 1783.11 m
Minimum Sensor Height -
Maximum Sensor Height -
Sea Floor Depth -
Sensor Distribution Variable common depth - All sensors are grouped effectively at the same depth, but this depth varies significantly during the series
Sensor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
Sea Floor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
 

Parameters
BODC CODE Rank Units Title
ATTNMR01 1 per metre Attenuance (red light wavelength) per unit length of the water body by 20 or 25cm path length transmissometer
DOXYPR01 1 Micromoles per litre Concentration of oxygen {O2} per unit volume of the water body [dissolved phase] by in-situ Beckmann probe
FVLTAQ01 1 Volts Instrument output (voltage) by in-situ Aquatracka chlorophyll fluorometer
OXYSBB01 1 Percent Saturation of oxygen {O2} in the water body [dissolved phase] by in-situ Beckmann probe and computation from concentration using Benson and Krause algorithm
POTMCV01 1 Degrees Celsius Potential temperature of the water body by computation using UNESCO 1983 algorithm
PRESPR01 1 Decibars Pressure (spatial co-ordinate) exerted by the water body by profiling pressure sensor and corrected to read zero at sea level
PSALST01 1 Dimensionless Practical salinity of the water body by CTD and computation using UNESCO 1983 algorithm
SIGTPR01 1 Kilograms per cubic metre Sigma-theta of the water body by CTD and computation from salinity and potential temperature using UNESCO algorithm
TEMPST01 1 Degrees Celsius Temperature of the water body by CTD or STD
 

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

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

Neil Brown MK3 CTD

The Neil Brown MK3 conductivity-temperature-depth (CTD) profiler consists of an integral unit containing pressure, temperature and conductivity sensors with an optional dissolved oxygen sensor in a pressure-hardened casing. The most widely used variant in the 1980s and 1990s was the MK3B. An upgrade to this, the MK3C, was developed to meet the requirements of the WOCE project.

The MK3C includes a low hysteresis, titanium strain gauge pressure transducer. The transducer temperature is measured separately, allowing correction for the effects of temperature on pressure measurements. The MK3C conductivity cell features a free flow, internal field design that eliminates ducted pumping and is not affected by external metallic objects such as guard cages and external sensors.

Additional optional sensors include pH and a pressure-temperature fluorometer. The instrument is no longer in production, but is supported (repair and calibration) by General Oceanics.

Specifications

These specification apply to the MK3C version.

Pressure Temperature Conductivity
Range

6500 m

3200 m (optional)

 -3 to 32°C 1 to 6.5 S cm-1
Accuracy

0.0015% FS

0.03% FS < 1 msec

0.0005°C

0.003°C < 30 msec

0.0001 S cm-1

0.0003 S cm-1 < 30 msec

Further details can be found in the specification sheet.

Aquatracka fluorometer

The Chelsea Instruments Aquatracka is a logarithmic response fluorometer. It uses a pulsed (5.5 Hz) xenon light source discharging between 320 and 800 nm through a blue filter with a peak transmission of 420 nm and a bandwidth at half maximum of 100 nm. A red filter with sharp cut off, 10% transmission at 664 nm and 678 nm, is used to pass chlorophyll-a fluorescence to the sample photodiode.

The instrument may be deployed either in a through-flow tank, on a CTD frame or moored with a data logging package.

Further details can be found in the manufacturer's specification sheet.

SeaTech Transmissometer

Introduction

The transmissometer is designed to accurately measure the the amount of light transmitted by a modulated Light Emitting Diode (LED) through a fixed-length in-situ water column to a synchronous detector.

Specifications

Notes

The instrument can be interfaced to Aanderaa RCM7 current meters. This is achieved by fitting the transmissometer in a slot cut into a customized RCM4-type vane.

A red LED (660 nm) is used for general applications looking at water column sediment load. However, green or blue LEDs can be fitted for specilised optics applications. The light source used is identified by the BODC parameter code.

Further details can be found in the manufacturer's Manual.

Project Information

Biogeochemistry in the Deep Ocean Benthic Boundary (BENBO)

Introduction

BENBO was a Thematic Programme funded by the U.K's Natural Environment Research Council (NERC). It ran between 1997 and 2000, bringing together scientists from several research groups to study the biogeochemical processes at work on the seabed. In total, there were four multidisciplinary research cruises linked to the BENBO Programme.

Scientific Rationale

The fundamental aim of the BENBO Programme was to gain a better understanding of the physical, chemical and biological processes occurring at the seabed in the relatively undisturbed marine environment to the west of Britain. The broad objective was to provide a more accurate picture of the biogeochemical interactions within the benthic boundary layer in relation to episodic influxes of organic material following surface ocean phytoplankton blooms. Coupled with this was a desire to further understand the residence times and fates of anthropogenic pollutants, such as trace metals, within this environment.

Fieldwork

In order to achieve the objectives of BENBO, scientists undertook three research cruises to the Rockall Trough region. Three different localities were selected for study on the basis of bottom current activity, phyto-detrital input and water depth. The first cruise (CD107, August 1997) was a preliminary site assessment. This was followed by two process cruises (CD111, April-May 1998 and CD113, June-July 1998). A further cruise (CH143, May-June 1999) was part-funded by BENBO to retrieve moorings left at the study sites.

A wide variety of techniques/instrumentation were employed by BENBO. These included:

Contacts

Collaborator Organisation
Dr. Kevin Black (Project Manager) Dunstaffnage Marine Laboratory
Prof. Graham Shimmield Dunstaffnage Marine Laboratory
Prof. John Gage Dunstaffnage Marine Laboratory
Dr. Richard Lampitt Southampton Oceanography Centre
Dr. Andy Gooday Southampton Oceanography Centre
Dr. John Thomson Southampton Oceanography Centre
Prof. J.W. Murray Southampton Oceanography Centre
Dr. Carol Turley Plymouth Marine Laboratory
Prof. William Davison Lancaster University
Dr. Gary Fones Lancaster University
Dr. John Hamilton-Taylor Lancaster University
Dr. Michael Krom Leeds University
Dr. Hilary Kennedy Bangor University
Dr. Dave Thomas Bangor University
Dr. Gordon Cook Scottish Universities Research and Reactor Centre
Dr. Gus MacKenzie Scottish Universities Research and Reactor Centre
Dr. Greg Cowie Edinburgh University
Dr. Bryne Ngwenya Edinburgh University
Dr. Harry Elderfield Cambridge University

Data Activity or Cruise Information


No Data Activity or Cruise Information held for the Series

Fixed Station Information

Fixed Station Information

Station NameExtended Ellett Line
CategoryOffshore route/traverse

Extended Ellett Line

The Extended Ellett Line is a hydrographic transect consisting of 58 individual fixed stations which have been occupied, typically on an annual basis, since September 1996. The Line runs from the south of Iceland, across the Iceland Basin to the outcrop of Rockall, and across the Rockall Trough to the north west coast of Scotland (see map). CTD dips and associated water sampling for the analysis of nutrients are routinely performed during each station occupation.

The Extended Ellett Line augments the original Ellett Line time series - a shorter repeated transect which encompassed those stations between Rockall and Scotland. Work on the Ellett Line was typically carried out at least once a year between 1975 and 1996.

Map of standard stations (1996-present)

BODC image

Map produced using the GEBCO Digital Atlas

The white triangles indicate the nominal positions of the Extended Ellett Line stations visited since September 1996. Measurements made along the Extended Ellett Line lie within a box bounded by co-ordinates 56° N, 21° W at the south west corner and 65° N, 6° W at the north east corner.

Nominal Extended Ellett Line stations (September 1996-present)

Listed below are nominal details of the standard hydrographic stations that have formed the Extended Ellett Line since September 1996.

Station Latitude Longitude Depth Range
IB23S 63.318 N 20.210 W 125 m -
IB22S 63.217 N 20.067 W 660 m 0.0 nm
IB21S 63.133 N 19.917 W 1030 m 6.5 nm
IB20S 62.917 N 19.550 W 1415 m 16.4 nm
IB19S 62.667 N 19.667 W 1500 m 16.0 nm
IB18S 62.333 N 19.833 W 1800 m 16.0 nm
IB17 62.000 N 20.000 W 1700 m 20.6 nm
IB16 61.500 N 20.000 W 2000 m 30.1 nm
IB15 61.250 N 20.000 W 2375 m 15.0 nm
IB14 61.000 N 20.000 W 2400 m 15.0 nm
IB13 60.500 N 20.000 W 2500 m 30.1 nm
IB12 60.000 N 20.000 W 2700 m 30.1 nm
IB11 59.667 N 19.117 W 2680 m 33.3 nm
IB10 59.400 N 18.417 W 2420 m 26.7 nm
IB9 59.333 N 18.233 W 1910 m 6.9 nm
IB8 59.200 N 17.883 W 1540 m 13.4 nm
IB7 59.117 N 17.667 W 1000 m 8.3 nm
IB6 58.950 N 17.183 W 850 m 18.0 nm
IB5 58.883 N 17.000 W 1150 m 7.0 nm
IB4 58.500 N 16.000 W 1210 m 38.8 nm
IB3 58.250 N 15.333 W 680 m 25.8 nm
IB2 57.950 N 14.583 W 480 m 29.9 nm
IB1 57.667 N 13.900 W 160 m 27.7 nm
A 57.583 N 13.633 W 130 m 10.0 nm
B 57.567 N 13.333 W 210 m 9.7 nm
C 57.550 N 13.000 W 330 m 10.8 nm
D 57.542 N 12.867 W 1000 m 4.3 nm
E 57.533 N 12.633 W 1658 m 7.6 nm
F 57.508 N 12.250 W 1817 m 12.5 nm
G 57.492 N 11.850 W 1812 m 13.0 nm
H 57.483 N 11.533 W 2020 m 10.3 nm
I 57.467 N 11.317 W 750 m 7.0 nm
J 57.450 N 11.083 W 550 m 7.6 nm
K 57.400 N 10.867 W 850 m 7.6 nm
L 57.367 N 10.667 W 2076 m 6.8 nm
M 57.300 N 10.383 W 2340 m 10.1 nm
N 57.233 N 10.050 W 2100 m 11.5 nm
O 57.150 N 9.700 W 1900 m 12.4 nm
P 57.100 N 9.417 W 1050 m 9.7 nm
Q 57.050 N 9.217 W 350 m 7.2 nm
R 57.000 N 9.000 W 135 m 7.7 nm
S 56.950 N 8.783 W 125 m 7.7 nm
15G 56.883 N 8.500 W 125 m 10.1 nm
T 56.837 N 8.333 W 120 m 6.1 nm
14G 56.808 N 8.167 W 115 m 5.7 nm
13G 56.783 N 8.000 W 110 m 5.7 nm
12G 56.758 N 7.833 W 80 m 5.7 nm
11G 56.733 N 7.667 W 55 m 5.7 nm
10G 56.733 N 7.500 W 220 m 5.5 nm
9G 56.733 N 7.333 W 160 m 5.5 nm
8G 56.733 N 7.167 W 175 m 5.5 nm
7G 56.733 N 7.000 W 145 m 5.5 nm
6G 56.733 N 6.750 W 35 m 8.2 nm
5G 56.733 N 6.600 W 75 m 4.9 nm
4G 56.733 N 6.450 W 115 m 4.9 nm
3G 56.708 N 6.367 W 75 m 3.1 nm
2G 56.683 N 6.283 W 40 m 3.2 nm
1G 56.667 N 6.133 W 190 m 5.0 nm

Occupations of the Extended Ellett Line (September 1996-present)

BODC Cruise Identifier Cruise Dates Ship
D223A 28 September-21 October 1996 RRS Discovery
D230 7 August-17 September 1997 RRS Discovery
D233 23 April-1 June 1998 RRS Discovery
D242 7 September-6 October 1999 RRS Discovery
D245 * 27 January-20 February 2000 RRS Discovery
0700S * 8-22 May 2000 FRV Scotia
D253 4 May-20 June 2001 RRS Discovery
0703S * 15 April-5 May 2003 FRV Scotia
PO300_2 * 19 July-6 August 2003 RRS Poseidon
PO314 11 July-23 July 2004 RV Poseidon
CD176 6 October-1 November 2005 RRS Charles Darwin
D312 11-31 October 2006 RRS Discovery
D321A 24 July-23 August 2007 RRS Discovery
D321B 24 August-9 September 2007 RRS Discovery
0508S * 6-25 May 2008 FRV Scotia
D340A 10-25 June 2009 RRS Discovery
D351 10-28 May 2010 RRS Discovery
D365 13 May-02 June 2011 RRS Discovery

* These cruises only surveyed the original hydrographic section between Scotland and Rockall.

Other Series linked to this Fixed Station - 559020 559032 559044 559056 559068 559081 559093 559100 559112 559124 559136 559148 559161 559173 559185 559197 559204 559216 559228 559241 626666 626678 626691 626709 626710 626722 626734 626746 626758 626771 626783 626795 626802 626814 626826 626838 626851 626863 626875 626887 751960 751972 753573 753585 756478 771438 771451 771487 772245 772257 772269 776246 776258 776271 776283 776295 776302 776314 776326 776338 776351 776363 776406 776418 776431 776443 776455 776467 776479 776480 776492 776523 776547 776559 776560 776572 776584 776596 776603 776615 776627 776639 776640 776652 776664 776676 776688 776707 776719 776732 776744 776756 776768 776781 776885 776897 776904 776916 776928 776941 776953 776965 844872 844884 844896 844903 844915 844927 844939 844940 844952 844964 844976 844988 845003 845015 845027 845040 845064 845088 845107 845119 845120 845132 845144 845156 845168 845181 845193 845200 845212 845224 845236 847243 847255 847267 847279 847280 847292 847311 847335 847347 847359 847360 847372 847384 847396 847403 847415 847427 847439 847440 847452 847464 847476 847488 847507 847519 847520 847532 847544 847556 847568 847612 847624 847636 847648 847661 847845 847857 847869 847870 847882 847894 880732 880744 880756 880768 880781 880793 880800 880812 880824 880836 880848 880861 880873 880885 880897 880904 880916 880928 880941 880953 880965 880977 880989 880990 881004 881016 881028 881041 881053 896390 896408 896421 896433 896445 896457 896469 896470 896482 896494 896501 896513 896525 896537 896550 896562 896574 896586 896734 896746 896758 896771 896783 896795 896863 896875 896887 896899 896906 896979 896980 896992 897006 897018 897031 897043 897055 897067 897079 897080 953888 953919 953920 953932 953944 953956 953968 953981 953993 954007 954019 954020 954044 954056 954068 954081 954093 954100 954112 954124 954136 954148 954161 954173 954185 954197 954204 954216 954228 954241 954253 954265 954277 954289 954290 954308 954321 954333 954345 954357 954369 954370 954382 954394 954683 954695 954702 954714 954726 954738 954751 954763 954775 954787 954799 954806 954818 954831 974580 974592 974611 974623 974635 974647 974659 974660 974672 974684 1015463 1015475 1015487 1015499 1015506 1015518 1015531 1020404 1020416 1020428 1020441 1020453 1020465 1020477 1020489 1020490 1020508 1020521 1020533 1020557 1020569 1020570 1020582 1020594 1020601 1020613 1020625 1020637 1020649 1020650 1020674 1020686 1043415 1043427 1052467 1052479 1052480 1052492 1052511 1052535 1052547 1052559 1052560 1052572 1052584 1052596 1052615 1052627 1052639 1052640 1053434 1053446 1053458 1053483 1053502 1053526 1053538 1070566 1070578 1070591 1070609 1070610 1070622 1070634 1070658 1070671 1070695 1070702 1070714 1070726 1070738 1070751 1070763 1070775 1070787 1070799 1070806 1070818 1070831 1070843 1070855 1070867 1070879 1070880 1070892 1070911 1070923 1070935 1070947 1070959 1070960 1070972 1070984 1070996 1071011 1071023 1071035 1071047 1071059 1071834 1071846 1071858 1074881 1074900 1074924 1075000 1075012 1075024 1075036 1075048 1075061 1075073 1075085 1075097 1075104 1075128 1075153 1075177 1075189 1075190 1075208 1075221 1075233 1075245 1075257 1075269 1075270 1076899 1076906 1076918 1076931 1076955 1076979 1076980 1077092 1077111 1077123 1077135 1077147 1077159

Fixed Station Information

Station NameEllett Line/Extended Ellett Line Station F
CategoryOffshore location
Latitude57° 30.48' N
Longitude12° 15.00' W
Water depth below MSL1817.0 m

Ellett Line/Extended Ellett Line: Station F

Station F is one of 58 fixed CTD stations, which together form The Extended Ellett Line. The line lies between Iceland and the Sound of Mull (Scotland) crossing the Iceland Basin and Rockall Trough via the outcrop of Rockall. As part of this initiative, CTD dips, together with associated discrete sampling of the water column, have typically been carried out annually at this station since September 1996.

Prior to September 1996, Station F was part of a shorter repeated survey section, consisting of 35 fixed stations, known as The Ellett Line (originally termed the Anton Dohrn Seamount Section). This line incorporated those stations across the Rockall Trough and Scottish shelf between Rockall and the Sound of Mull and was visited at regular intervals (usually at least once a year) between 1975 and January 1996.

Other Series linked to this Fixed Station - 88805 89359 89998 90232 90465 90902 91284 94141 94442 95224 96934 96946 186013 187514 188308 188867 189336 189416 190780 193624 250441 254024 257427 258295 259711 261334 265488 265986 313369 314951 316343 316957 317764 382641 385602 386617 387749 389210 390585 390954 434178 435274 559081 626826 776547 844915 847415 880793 896525 954241 1020613 1052707 1070787

Fixed Station Information

Station NameEllett Line
CategoryOffshore route/traverse

Ellett Line

The Ellett Line is a hydrographic transect consisting of 35 individual fixed stations which were occupied, usually at least once a year, between 1975 and 1996. The time series is named after the scientist David Ellett, who coordinated the survey work at Dunstaffnage Marine Laboratory (DML), near Oban. The transect ran between the north west coast of Scotland to the small outcrop of Rockall, via the Anton Dohrn Seamount - a prominent bathymetric feature in the Rockall Trough (see map). STD/CTD dips and associated water sampling for the analysis of nutrients were routinely performed during each station occupation.

In 1996 the transect was lengthened to incorporate new additional fixed stations crossing the Iceland Basin from Rockall to Iceland. This transect, which is still routinely occupied annually, is now known as the Extended Ellett Line and is a collaborative effort between scientists at Dunstaffnage Marine Laboratory and the Southampton site of the National Oceanography Centre (NOC).

Map of standard stations (1975-1996)

BODC image

Map produced using the GEBCO Digital Atlas

The white triangles indicate the nominal positions of the Ellett Line stations (1975- 1996). Measurements made along the Ellett Line lie within a box bounded by co-ordinates 56° 40.02' N, 13° 42.0' W at the south west corner and 57° 37.2' N, 6° 7.98' W at the north east corner.

Nominal Ellett Line stations (1975-1996)

Listed below are nominal details of the standard hydrographic stations that formed the Ellett Line between 1975 and January 1996.

Station Latitude Longitude Depth Range
A 57.583 N 13.633 W 130 m 10.0 nm
B 57.567 N 13.333 W 210 m 9.7 nm
C 57.550 N 13.000 W 330 m 10.8 nm
D 57.542 N 12.867 W 1000 m 4.3 nm
E 57.533 N 12.633 W 1658 m 7.6 nm
F 57.508 N 12.250 W 1817 m 12.5 nm
G 57.492 N 11.850 W 1812 m 13.0 nm
H 57.483 N 11.533 W 2020 m 10.3 nm
I 57.467 N 11.317 W 750 m 7.0 nm
J 57.450 N 11.083 W 550 m 7.6 nm
K 57.400 N 10.867 W 850 m 7.6 nm
L 57.367 N 10.667 W 2076 m 6.8 nm
M 57.300 N 10.383 W 2340 m 10.1 nm
N 57.233 N 10.050 W 2100 m 11.5 nm
O 57.150 N 9.700 W 1900 m 12.4 nm
P 57.100 N 9.417 W 1050 m 9.7 nm
Q 57.050 N 9.217 W 350 m 7.2 nm
R 57.000 N 9.000 W 135 m 7.7 nm
S 56.950 N 8.783 W 125 m 7.7 nm
15G 56.883 N 8.500 W 125 m 10.1 nm
T 56.837 N 8.333 W 120 m 6.1 nm
14G 56.808 N 8.167 W 115 m 5.7 nm
13G 56.783 N 8.000 W 110 m 5.7 nm
12G 56.758 N 7.833 W 80 m 5.7 nm
11G 56.733 N 7.667 W 55 m 5.7 nm
10G 56.733 N 7.500 W 220 m 5.5 nm
9G 56.733 N 7.333 W 160 m 5.5 nm
8G 56.733 N 7.167 W 175 m 5.5 nm
7G 56.733 N 7.000 W 145 m 5.5 nm
6G 56.733 N 6.750 W 35 m 8.2 nm
5G 56.733 N 6.600 W 75 m 4.9 nm
4G 56.733 N 6.450 W 115 m 4.9 nm
3G 56.708 N 6.367 W 75 m 3.1 nm
2G 56.683 N 6.283 W 40 m 3.2 nm
1G 56.667 N 6.133 W 190 m 5.0 nm

History of Ellett Line occupations (1975-January 1996)

BODC Cruise Identifier Cruise Dates Ship
CH3/75 4-13 March 1975 RRS Challenger
CH7A/75 1-6 May 1975 RRS Challenger
CH10A/75 4-10 July 1975 RRS Challenger
CH12A/75 26 August-2 September 1975 RRS Challenger
CH14A/75 7-12 November 1975 RRS Challenger
CH5A/76 29 March-5 April 1976 RRS Challenger
CH8/76 19 May-1 June 1976 RRS Challenger
CH12/76 4-15 August 1976 RRS Challenger
CH15/76 7-16 October 1976 RRS Challenger
CH17/76 7-20 December 1976 RRS Challenger
CH4/77 25 February-11 March 1977 RRS Challenger
CH6B/77 14-19 April 1977 RRS Challenger
CH10/77 29 June-10 July 1977 RRS Challenger
CH11/77 12-26 July 1977 RRS Challenger
CH13/77 20 August-3 September 1977 RRS Challenger
CH2/78 30 January-13 February 1978 RRS Challenger
CH6/78 11-21 April 1978 RRS Challenger
CH9/78 31 May-10 June 1978 RRS Challenger
CH11B/78 29 July-12 August 1978 RRS Challenger
CH11D/78 3-17 September 1978 RRS Challenger
CH14B/78 4-11 November 1978 RRS Challenger
CH7/79 10-23 May 1979 RRS Challenger
S5/79 19 June-2 July 1979 RRS Shackleton
CH13/79 11-16 September 1979 RRS Challenger
CH16/79 28 October-11 November 1979 RRS Challenger
CH4/80 26 February-7 March 1980 RRS Challenger
CH7/80 21 April-6 May 1980 RRS Challenger
CH2/81 26 January-4 February 1981 RRS Challenger
CH6A/81 CH6B/81 6-25 April 1981 RRS Challenger
CH10/81 4-14 July 1981 RRS Challenger
CH15/81 6-20 October 1981 RRS Challenger
CH7A/82 CH7B/82 26 April-16 May 1982 RRS Challenger
CH15/82 16-30 October 1982 RRS Challenger
CH7B/83 23 May-2 June 1983 RRS Challenger
CH11/83 10-24 August 1983 RRS Challenger
CH2/84 23 June-8 July 1984 RRS Challenger
CH10/84 16 November-6 December 1984 RRS Challenger
CH1/85 20 January-5 February 1985 RRS Challenger
CH4/85 2-16 May 1985 RRS Challenger
CH8/85 14-28 August 1985 RRS Challenger
CH9 8-22 January 1987 RRS Challenger
CH14 24 April-7 May 1987 RRS Challenger
CH22 23 November-5 December 1987 RRS Challenger
CH25 24 February-7 March 1988 RRS Challenger
CH30 6-23 June 1988 RRS Challenger
D180 20 January-4 February 1989 RRS Discovery
LF1/89 5-11 May 1989 RV Lough Foyle
LF2/89 4-10 August 1989 RV Lough Foyle
CD44 24 November-2 December 1989 RRS Charles Darwin
CH67A 21-29 June 1990 RRS Challenger
CH71A 29 August-5 September 1990 RRS Challenger
CH75B 23 February-3 March 1991 RRS Challenger
CH81 1-8 July 1991 RRS Challenger
CH97 25 September-6 October 1992 RRS Challenger
CH101B 13-20 March 1993 RRS Challenger
CH103 12-24 May 1993 RRS Challenger
CH105 3-16 September 1993 RRS Challenger
CH110 10-20 March 1994 RRS Challenger
CH112 28 April-13 May 1994 RRS Challenger
CH114 15-29 August 1994 RRS Challenger
CH116 17-29 November 1994 RRS Challenger
CD92B 13 April-2 May 1995 RRS Charles Darwin
CH120 18 July-6 August 1995 RRS Challenger
CH124 8-27 January 1996 RRS Challenger

Other Series linked to this Fixed Station - 88669 88670 88682 88694 88701 88713 88749 88750 88762 88774 88786 88798 88805 88817 88829 88830 88842 89187 89199 89206 89218 89231 89243 89255 89267 89279 89280 89292 89311 89323 89359 89360 89384 89403 89673 89685 89697 89765 89777 89789 89790 89808 89821 89833 89845 89857 89869 89870 89882 89894 89901 89913 89925 89937 89949 89950 89962 89974 89986 89998 90084 90096 90103 90115 90127 90139 90140 90152 90164 90176 90188 90207 90219 90220 90232 90244 90256 90268 90281 90293 90385 90397 90404 90416 90428 90453 90465 90477 90490 90508 90521 90533 90545 90557 90569 90570 90594 90601 90613 90625 90846 90871 90883 90895 90902 90914 90951 90963 90987 90999 91026 91038 91051 91063 91075 91087 91099 91106 91118 91131 91143 91155 91167 91179 91180 91192 91211 91223 91235 91247 91259 91260 91272 91284 91296 91303 91315 91327 91339 91690 91721 91733 91745 91757 91770 91782 91862 91874 91886 91898 91905 91917 91929 91930 91942 91954 91966 91978 91991 92005 92017 92029 92030 92042 92054 92066 92078 92091 92109 92110 92183 92195 92202 92214 92238 92251 92263 92275 92287 92299 92306 92318 92331 92367 92379 92380 92392 92423 92435 92447 92460 92472 92484 92496 92503 92515 92527 92539 92540 92552 92564 92576 93358 93371 93531 94085 94097 94104 94116 94128 94141 94153 94165 94177 94189 94190 94208 94221 94233 94245 94257 94269 94270 94282 94294 94301 94313 94325 94337 94349 94350 94362 94374 94398 94405 94417 94429 94442 94454 94466 94509 94510 94546 94558 94571 94583 94595 94602 94792 94811 94859 94860 94872 94952 94964 94976 94988 95003 95181 95193 95200 95212 95224 95236 95248 95261 95273 95285 95297 95304 95316 95328 95341 95353 95562 95574 95734 95746 95758 95771 95783 95795 95802 95814 95826 95838 95851 95863 95875 95887 95906 95918 95931 95943 95955 95967 95979 95980 95992 96006 96018 96031 96043 96055 96067 96079 96080 96092 96111 96123 96725 96737 96749 96750 96762 96774 96786 96798 96805 96817 96829 96830 96842 96854 96866 96878 96891 96909 96910 96922 96934 96946 96958 96971 96983 96995 97009 97010 97022 97034 97046 97058 97071 97083 98652 98664 98676 98688 98707 98719 98720 98732 98744 98756 98768 98781 98793 98800 98812 98824 98836 98848 99815 99827 99839 99840 99852 99864 99876 99888 185962 185974 185986 185998 186001 186013 186025 186037 186049 186050 186062 186074 186086 186098 186105 186117 186129 186130 186142 186154 186178 186191 186209 186210 186222 186234 186848 186861 186873 186885 186897 186904 186916 186928 187090 187121 187133 187145 187157 187169 187182 187194 187213 187237 187250 187298 187305 187317 187329 187330 187378 187434 187446 187458 187483 187502 187514 187526 187538 187563 187587 187606 187631 187643 187655 187667 187679 187692 187723 187735 187747 187759 187760 187772 187784 187796 187803 187815 187827 187839 187852 187876 187907 187919 187920 187932 187944 187956 187968 187981 187993 188007 188019 188020 188253 188265 188277 188289 188290 188308 188321 188333 188345 188357 188369 188370 188382 188394 188401 188413 188425 188437 188449 188450 188818 188831 188843 188855 188867 188879 188880 188892 188911 188923 188935 188947 188959 188960 189023 189035 189047 189059 189060 189072 189084 189096 189103 189115 189127 189139 189152 189164 189176 189188 189207 189219 189244 189256 189268 189281 189293 189312 189336 189348 189361 189373 189385 189397 189404 189416 189428 189453 189477 189489 189490 189521 189545 189625 189637 189649 189650 189662 189674 189686 189698 189705 189717 190780 190792 190811 190823 190835 190847 190859 190860 190872 190884 190896 190915 190927 190939 191389 191390 191408 191421 191433 191445 191457 191469 191470 191494 192196 192203 192227 192240 192252 192264 192276 192288 192307 192319 192320 193280 193292 193311 193323 193335 193347 193359 193360 193372 193384 193396 193403 193427 193439 193440 193452 193464 193476 193488 193507 193519 193544 193556 193568 193581 193593 193600 193612 193624 193870 250385 250397 250404 250416 250428 250441 250465 250477 250489 250490 250508 250521 250533 250545 250557 250569 250570 250582 250594 250601 250613 250625 250637 250649 250650 250662 250674 250686 250698 251303 251315 251327 251339 251340 251352 251604 251616 251628 251641 251653 251665 251677 251689 253752 253764 253776 253788 253807 253819 253820 253832 253844 253856 253868 253881 253893 253900 253912 253924 253936 253948 253961 253973 253985 253997 254000 254012 254024 254036 254048 254061 254073 254085 255783 255795 255802 255814 255826 255838 255851 255863 255875 255887 255899 255906 255918 255931 255943 255955 255967 255979 255980 255992 256006 256018 256031 257372 257384 257396 257403 257415 257427 257439 257440 257452 257808 257821 257833 257845 257857 257913 257925 257937 257949 257950 257962 257974 257986 258283 258295 258302 258314 258326 258338 258351 258363 258375 258387 258399 258406 258418 258547 258559 258560 258572 258584 258596 259618 259643 259655 259667 259679 259680 259692 259711 259723 259735 259747 259759 259760 259772 259784 259796 259803 259815 259827 259839 259840 259852 259864 259876 259888 259907 259919 259920 259932 259944 259956 259968 261069 261070 261082 261094 261101 261113 261125 261137 261149 261150 261162 261174 261186 261198 261205 261217 261229 261230 261254 261266 261278 261291 261310 261322 261334 261346 261358 261371 261383 261395 262651 262663 262675 262687 262699 262706 262718 262731 263863 263875 263887 263899 263906 263918 263931 263943 263955 263967 263979 263980 263992 264006 264018 264031 264043 264055 264067 264079 264080 264092 264111 264123 264135 264147 264159 264160 264172 264184 264196 264203 264215 264227 264239 264240 264252 264264 264276 264288 265218 265231 265243 265255 265267 265279 265280 265292 265311 265323 265335 265347 265359 265360 265372 265384 265396 265403 265415 265427 265439 265440 265452 265464 265476 265488 265507 265519 265520 265532 265728 265741 265753 265765 265777 265789 265790 265808 265821 265833 265845 265857 265869 265870 265882 265894 265901 265913 265925 265937 265949 265950 265962 265986 265998 266001 266013 266025 266037 266861 266873 266885 266897 266904 266916 266928 266941 266953 266965 266977 266989 266990 267004 267016 267028 267041 267053 312502 312514 312526 312538 312551 312563 312643 312655 312667 312680 312711 312723 312735 312747 312759 312760 312772 313081 313093 313100 313112 313124 313136 313148 313161 313173 313185 313197 313204 313216 313228 313241 313265 313277 313289 313290 313308 313321 313333 313345 313357 313369 313370 313382 313394 313401 314281 314293 314300 314312 314324 314336 314348 314361 314373 314385 314397 314404 314416 314428 314441 314453 314465 314717 314729 314730 314742 314754 314895 314902 314914 314926 314938 314951 314963 314975 314987 314999 315002 315014 315026 315038 315051 315063 315075 315087 315099 315106 315118 315131 315143 315155 315167 315179 315180 315862 315874 315886 315898 315905 315917 315929 315930 315942 315966 315978 315991 316005 316066 316078 316091 316109 316110 316122 316134 316146 316158 316171 316183 316195 316202 316214 316226 316238 316251 316263 316275 316287 316299 316306 316318 316331 316343 316355 316367 316379 316380 316392 316620 316632 316644 316656 316668 316681 316693 316700 316712 316724 316736 316748 316761 316773 316785 316804 316816 316828 316841 316853 316865 316877 316889 316890 316908 316921 316933 316945 316957 316969 316970 316982 316994 317008 317506 317518 317531 317543 317555 317567 317579 317580 317592 317611 317623 317635 317647 317659 317660 317672 317684 317696 317703 317715 317727 317739 317740 317752 317764 317776 317788 317807 317819 317820 343525 343537 345882 345894 345901 346086 346098 346105 346117 346129 346130 346191 346652 346664 346676 346688 346707 346719 347932 347944 347956 347968 347981 347993 348007 348019 348032 348056 348068 348081 348093 382352 382364 382376 382388 382407 382419 382420 382432 382444 382456 382468 382481 382493 382500 382512 382524 382536 382548 382561 382573 382585 382597 382604 382616 382628 382641 382653 382665 382677 382689 382690 384174 384186 384229 384230 384242 384254 384266 384278 384291 384309 384973 384985 384997 385000 385012 385024 385036 385048 385061 385269 385270 385282 385294 385301 385313 385325 385337 385349 385350 385362 385374 385386 385546 385558 385571 385583 385595 385602 385614 385626 385638 385651 385663 385675 385687 385699 385706 385718 385731 385743 385755 385767 385780 385811 385835 385903 385939 385940 385952 385964 385976 385988 386003 386015 386027 386039 386040 386052 386064 386365 386377 386389 386390 386408 386421 386433 386445 386457 386469 386470 386482 386494 386501 386513 386525 386537 386549 386550 386562 386574 386586 386598 386605 386617 386629 386630 386642 386654 386666 387694 387701 387713 387725 387737 387749 387750 387762 387774 387786 387798 387805 387817 387829 387830 387854 387891 387910 387922 387934 387946 387958 387971 387983 387995 388009 388010 388022 388034 388046 388058 388071 388083 388095 388950 388962 388974 388986 388998 389001 389013 389025 389037 389049 389050 389062 389074 389086 389098 389105 389117 389129 389130 389154 389166 389178 389191 389209 389210 389222 389234 389246 389258 389271 389283 389295 389302 389314 389326 389338 389351 389431 389455 389479 389492 389511 389523 389535 389547 389559 389560 389572 389584 389596 389603 389615 389627 390026 390284 390296 390303 390315 390327 390339 390340 390352 390364 390376 390407 390432 390456 390481 390493 390500 390512 390524 390536 390548 390561 390573 390585 390597 390604 390616 390628 390641 390677 390689 390690 390708 390733 390745 390757 390769 390770 390782 390794 390801 390825 390849 390862 390874 390886 390898 390905 390917 390929 390930 390942 390954 390966 390978 390991 391005 391017 391411 391423 391841 391853 391865 391877 391889 391890 391908 391921 391933 391945 391957 391969 391970 391982 391994 392008 392021 392033 392045 392057 392069 392070 392082 392094 392101 433894 433901 433913 433925 433937 433949 433950 433962 433974 433986 433998 434001 434013 434025 434049 434062 434086 434098 434105 434117 434129 434130 434142 434154 434166 434178 434191 434209 434210 434222 434271 434314 434572 434584 434596 434603 434615 434627 434639 434640 434652 434676 434688 434707 434720 434744 434768 435145 435157 435169 435170 435182 435194 435201 435225 435237 435249 435250 435262 435274 435286 435298 435305 435330 435354 435366 435378 435409 435422 435446 435551 435563 435575 435587 435599 435606 435618 435631 435643 559020 559032 559044 559056 559068 559081 559093 559100 559112 559124 559136 559148 559161 559173 559185 559197 559204 559216 559228 559241 626666 626678 626691 626709 626710 626722 626734 626746 626758 626771 626783 626795 626802 626814 626826 626838 626851 626863 626875 626887 776479 776480 776492 776523 776547 776559 776560 776572 776584 776596 776603 776615 776627 776639 776640 776652 776664 776676 776688 776707 776719 776732 776744 776756 776768 776781 776885 776897 776904 776916 776928 776941 776953 776965 844872 844884 844896 844903 844915 844927 844939 844940 844952 844964 844976 844988 845003 845015 845027 845040 845064 845088 845107 845119 845120 845132 845144 845156 845168 845181 845193 845200 845212 845224 845236 847372 847384 847396 847403 847415 847427 847439 847440 847452 847464 847476 847488 847507 847519 847520 847532 847544 847556 847568 847612 847624 847636 847648 847661 847869 847870 847882 847894 880732 880744 880756 880768 880781 880793 880800 880812 880824 880836 880848 880861 880873 880885 880897 880904 880916 880928 880941 880953 880965 880977 880989 880990 881004 881016 881028 881041 881053 896390 896408 896421 896433 896445 896457 896469 896470 896482 896494 896501 896513 896525 896537 896550 896562 896574 896586 896863 896875 896887 896899 896906 896979 896980 896992 897006 897018 897031 897043 897055 897067 954185 954197 954204 954216 954228 954241 954253 954265 954277 954289 954290 954308 954321 954333 954345 954357 954369 954370 954382 954394 954683 954695 954702 954714 954726 954738 954751 954763 954775 954787 954799 954806 954818 954831 974660 974672 974684 1015506 1015518 1015531 1020582 1020594 1020601 1020613 1020625 1020637 1020649 1020650 1020674 1020686 1043427 1052652 1052664 1052676 1052688 1052707 1052719 1052720 1052732 1052744 1052756 1052768 1052781 1052793 1052800 1052812 1052824 1052836 1052848 1052861 1052873 1052885 1052897 1052904 1052916 1052928 1052941 1052953 1052965 1052977 1052989 1052990 1053004 1053551 1053563 1070566 1070578 1070591 1070609 1070610 1070622 1070634 1070658 1070671 1070695 1070702 1070714 1070726 1070738 1070751 1070763 1070775 1070787 1070799 1070806 1070818 1070831 1071834 1074881 1074900 1074924 1075000 1075012 1075024 1075036 1075048 1075061 1075073 1075085 1075097 1075104 1075128 1075153 1075177 1075189 1075190 1075208 1075221 1075233 1075245 1075257 1075269 1075270 1076899 1076906 1076918 1076931 1076955 1076979 1076980 1077092 1077111 1077123 1077135 1077147 1077159

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