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Metadata Report for BODC Series Reference Number 592152


Metadata Summary

Data Description

Data Category Currents -subsurface Eulerian
Instrument Type
NameCategories
Aanderaa RCM 7/8 Recording Current Meter  current meters
Instrument Mounting subsurface mooring
Originating Country United Kingdom
Originator Mr Colin Griffiths
Originating Organization Dunstaffnage Marine Laboratory (now Scottish Association for Marine Science)
Processing Status banked
Online delivery of data Download available - Ocean Data View (ODV) format
Project(s) North Sea Project 1987-1992
NSP Resuspension Process Study
 

Data Identifiers

Originator's Identifier AS9634.60410
BODC Series Reference 592152
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 1989-09-07 16:40
End Time (yyyy-mm-dd hh:mm) 1989-09-17 09:20
Nominal Cycle Interval 600.0 seconds
 

Spatial Co-ordinates

Latitude 54.59030 N ( 54° 35.4' N )
Longitude 4.82050 E ( 4° 49.2' E )
Positional Uncertainty 0.05 to 0.1 n.miles
Minimum Sensor or Sampling Depth 15.0 m
Maximum Sensor or Sampling Depth 15.0 m
Minimum Sensor or Sampling Height 30.0 m
Maximum Sensor or Sampling Height 30.0 m
Sea Floor Depth 45.0 m
Sea Floor Depth Source -
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 Sea floor reference - Depth measured as a height above sea floor but converted into a depth relative to the sea surface according to the same datum as used for sea floor depth (applicable to instrument depths not bathymetric depths)
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)
LCDAEL011Degrees TrueDirection (towards) of water current (Eulerian measurement) in the water body by in-situ current meter and correction to true North
LCSAEL011Centimetres per secondSpeed of water current (Eulerian measurement) in the water body by in-situ current meter
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

Aanderaa Recording Current Meter Model 7/8

Manufacturer's specifications: recording unit height 49.5cm (RCM8 52.0cm), diameter 12.8cm, vane size 48.5x50.0cm. Meter is designed for depths down to 2000m (RCM8 6000m). It incorporates a spindle which is shackled to the mooring line. The meter is attached to the spindle through a gimbal mounting which permits a maximum 27° deviation of the spindle from the vertical, the meter still remaining horizontal.

Meter comprises :

  1. Paddle wheel rotor magnetically coupled to an electronic counter

  2. Vane, which aligns instrument with current flow, has a balance weight ensuring static balance and tail fins to ensure dynamic balance in flows up to 250cm/s.

  3. Magnetic compass (needle is clamped to potentiometer ring) - direction recorded with 0.35° resolution, 5° accuracy for speeds 5 to 100cm/s, 7.5° accuracy for remaining speeds within 2.5 to 200cm/s range.

  4. Quartz clock, accuracy better than 2 sec/day within temperature range 0 to 20°C.

  5. Thermistor (temperature sensor), standard range -2.46 to 21.48°C (max on high range 36.04°C), accuracy 0.05°C, resolution 0.1 per cent of range, 63 per cent response time 12sec.

  6. Inductive cell conductivity sensor (optional), range 0 to 70mmho/cm standard resolution 0.1 per cent of range.

  7. Silicon piezoresistive bridge, standard range 0 to 3000 psi (RCM8 to 9000 psi), resolution 0.1% of range.

  8. Self balancing potentiometer which converts the output from each sensor into a 10 bit binary number for storage on magnetic tape.

  9. Associated electronics.

A built-in clock triggers the instrument at preset intervals and up to six channels are sampled in sequence. Channel 1 is a fixed reference reading for control purposes and data identification. Channels 2, 3 and 4 represent measurement of temperature, conductivity and pressure. Channels 5 and 6 represent the VECTOR AVERAGED current speed and direction since the previous triggering of the instrument. The number of rotor revolutions and the direction is sampled every 12 seconds and broken into North and East components. Successive components are added and recorded as speed and direction. For recording intervals longer than 10 minutes, speed and direction are sampled 1/50th of recording interval.

It has become common practice in some laboratories to deploy these meters as temperature and conductivity loggers without current measuring capabilities.

The following link will provide the manufacturer specifications:

Manufacturer specifications

BODC Current Meter Screening

BODC screen both the series header qualifying information and the parameter values in the data cycles themselves.

Header information is inspected for:

  • Irregularities such as unfeasible values
  • Inconsistencies between related information. For example:
    • Depths of meter and sea bed.
    • Times for mooring deployment and for start/end of data series.
    • Length of record or number of data cycles, the cycle interval, the clock error and the period over which accrued.
    • Parameters stated as measured and the parameters actually present in the data cycles.
  • Originator's comments on meter/mooring performance and data quality.

Documents are written by BODC highlighting irregularities which cannot be resolved.

Data cycles are inspected using time series plots of all parameters. Currents are additionally inspected using vector scatter plots and time series plots of North and East velocity components. These presentations undergo intrinsic and extrinsic screening to detect infeasible values within the data cycles themselves and inconsistencies as seen when comparing characteristics of adjacent data sets displaced with respect to depth, position or time. Values suspected of being of non- oceanographic origin may be tagged with the BODC flag denoting suspect value.

The following types of irregularity, each relying on visual detection in the time series plot, are amongst those which may be flagged as suspect:

  • Spurious data at the start or end of the record.
  • Obvious spikes occurring in periods free from meteorological disturbance.
  • A sequence of constant values in consecutive data cycles.

If a large percentage of the data is affected by irregularities, deemed abnormal, then instead of flagging the individual suspect values, a caution may be documented. Likewise documents will highlight irregularities seen in the current vector scatter plots such as incongruous centre holes, evidence of mooring 'knock-down', abnormal asymmetry in tidally dominated records or gaps as when a range of speeds or directions go unregistered due to meter malfunction.

The term 'knock-down' refers to the situation when the 'drag' exerted on a mooring at high current speeds may cause instruments to tilt beyond the angle at which they are intended to operate. At this point the efficiency of the current sensors to accurately record the flow is reduced.

Inconsistencies between the characteristics of the data set and those of its neighbours are sought, and where necessary, documented. This covers inconsistencies in the following:

  • Maximum and minimum values of parameters (spikes excluded).
  • The orientation and symmetry of the current vector scatter plot.
  • The direction of rotation of the current vectors.
  • The approximate amplitude and periodicity of the tidal currents.
  • The occurrence of meteorological events and, finally, for series for which no time check was possible, the phase.

This intrinsic and extrinsic screening of the parameter values seeks to confirm the qualifying information and the source laboratory's comments on the series. In screening and collating information, every care is taken to ensure that errors of BODC making are not introduced.

General Data Screening carried out by BODC

BODC screen both the series header qualifying information and the parameter values in the data cycles themselves.

Header information is inspected for:

  • Irregularities such as unfeasible values
  • Inconsistencies between related information, for example:
    • Times for instrument deployment and for start/end of data series
    • Length of record and the number of data cycles/cycle interval
    • Parameters expected and the parameters actually present in the data cycles
  • Originator's comments on meter/mooring performance and data quality

Documents are written by BODC highlighting irregularities which cannot be resolved.

Data cycles are inspected using time or depth series plots of all parameters. Currents are additionally inspected using vector scatter plots and time series plots of North and East velocity components. These presentations undergo intrinsic and extrinsic screening to detect infeasible values within the data cycles themselves and inconsistencies as seen when comparing characteristics of adjacent data sets displaced with respect to depth, position or time. Values suspected of being of non-oceanographic origin may be tagged with the BODC flag denoting suspect value; the data values will not be altered.

The following types of irregularity, each relying on visual detection in the plot, are amongst those which may be flagged as suspect:

  • Spurious data at the start or end of the record.
  • Obvious spikes occurring in periods free from meteorological disturbance.
  • A sequence of constant values in consecutive data cycles.

If a large percentage of the data is affected by irregularities then a Problem Report will be written rather than flagging the individual suspect values. Problem Reports are also used to highlight irregularities seen in the graphical data presentations.

Inconsistencies between the characteristics of the data set and those of its neighbours are sought and, where necessary, documented. This covers inconsistencies such as the following:

  • Maximum and minimum values of parameters (spikes excluded).
  • The occurrence of meteorological events.

This intrinsic and extrinsic screening of the parameter values seeks to confirm the qualifying information and the source laboratory's comments on the series. In screening and collating information, every care is taken to ensure that errors of BODC making are not introduced.


Project Information

North Sea Project

The North Sea Project (NSP) was the first Marine Sciences Community Research project of the Natural Environment Research Council (NERC). It evolved from a NERC review of shelf sea research, which identified the need for a concerted multidisciplinary study of circulation, transport and production.

The ultimate aim of the NERC North Sea Project was the development of a suite of prognostic water quality models to aid management of the North Sea. To progress towards water quality models, three intermediate objectives were pursued in parallel:

  • Production of a 3-D transport model for any conservative passive constituent, incorporating improved representations of the necessary physics - hydrodynamics and dispersion;
  • Identifying and quantifying non-conservative processes - sources and sinks determining the cycling and fate of individual constituents;
  • Defining a complete seasonal cycle as a database for all the observational studies needed to formulate, drive and test models.

Proudman Oceanographic Laboratory hosted the project, which involved over 200 scientists and support staff from NERC and other Government funded laboratories, as well as seven universities and polytechnics.

The project ran from 1987 to 1992, with marine field data collection between April 1988 and October 1989. One shakedown (CH28) and fifteen survey cruises (Table 1), each lasting 12 days and following the same track, were repeated monthly. The track selected covered the summer-stratified waters of the north and the homogeneous waters in the Southern Bight in about equal lengths together with their separating frontal band from Flamborough head to Dogger Bank, the Friesian Islands and the German Bight. Mooring stations were maintained at six sites for the duration of the project.

Table 1: Details of NSP Survey Cruises on RRS Challenger
Cruise No. Date
CH28 29/04/88 - 15/05/88
CH33 04/08/88 - 16/08/88
CH35 03/09/88 - 15/09/88
CH37 02/10/88 - 14/10/88
CH39 01/11/88 - 13/11/88
CH41 01/12/88 - 13/12/88
CH43 30/12/88 - 12/01/89
CH45 28/01/89 - 10/02/89
CH47 27/02/89 - 12/03/89
CH49 29/03/89 - 10/04/89
CH51 27/04/89 - 09/05/89
CH53 26/05/89 - 07/06/89
CH55 24/06/89 - 07/07/89
CH57 24/07/89 - 06/08/89
CH59 23/08/89 - 04/09/89
CH61 21/09/89 - 03/10/89

Alternating with the survey cruises were process study cruises (Table 2), which investigated some particular aspect of the science of the North Sea. These included fronts (nearshore, circulation and mixing), sandwaves and sandbanks, plumes (Humber, Wash, Thames and Rhine), resuspension, air-sea exchange, primary productivity and blooms/chemistry.

Table 2: Details of NSP Process cruises on RRS Challenger
Cruise No. Date Process
CH34 18/08/88 - 01/09/88 Fronts - nearshore
CH36 16/09/88 - 30/09/88 Fronts - mixing
CH56 08/07/89 - 22/07/89 Fronts - circulation
CH58 07/08/89 - 21/08/89 Fronts - mixing
CH38 24/10/88 - 31/10/88 Sandwaves
CH40 15/11/88 - 29/11/88 Sandbanks
CH42 15/12/88 - 29/12/88 Plumes/Sandbanks
CH46 12/02/89 - 26/02/89 Plumes/Sandwaves
CH44 13/01/89 - 27/01/89 Resuspension
CH52 11/05/89 - 24/05/89 Resuspension
CH60 06/09/89 - 19/09/89 Resuspension
CH48 13/03/89 - 27/03/89 Air/sea exchanges
CH62 05/10/89 - 19/10/89 Air/sea exchanges
CH50 12/04/89 - 25/04/89 Blooms/chemistry
CH54 09/06/89 - 22/06/89 Production

In addition to the main data collection period, a series of cruises took place between October 1989 and October 1990 that followed up work done on previous cruises (Table 3). Process studies relating to blooms, plumes (Humber, Wash and Rhine), sandwaves and the flux of contaminants through the Dover Strait were carried out as well as two `survey' cruises.

Table 3: Details of NSP `Follow up' cruises on RRS Challenger
Cruise No. Date Process
CH62A 23/10/89 - 03/11/89 Blooms
CH64 03/04/90 - 03/05/90 Blooms
CH65 06/05/90 - 17/05/90 Humber plume
CH66A 20/05/90 - 31/05/90 Survey
CH66B 03/06/90 - 18/06/90 Contaminants through Dover Strait
CH69 26/07/90 - 07/08/90 Resuspension/Plumes
CH72A 20/09/90 - 02/10/90 Survey
CH72B 04/10/90 - 06/10/90 Sandwaves/STABLE
CH72C 06/10/90 - 19/10/90 Rhine plume

The data collected during the observational phase of the North Sea Project comprised one of the most detailed sets of observations ever undertaken in any shallow shelf sea at that time.


North Sea Project Resuspension Process Study

The ratio of particulate to dissolved material which is so important to water quality is affected by resuspension which, in turn, depends on the character of the sea bed, biological influences, tidal currents, wind, wave and seasonal stratification. The objectives of the three resuspension cruises were to make time series observations of physical, sedimentological and biological properties of the sediment, suspended particle material and water at two sites in the North Sea, using a variety of moored instruments, CTD/water bottle casts, pumped sampling and sediment grabs and box cores.

The two sites were:

    • Northern Site
    • 54° 35'N, 004° 50'E
    • 45m depth
    • muddy sand
    • seasonally stratified water column
    • Southern Site
    • 52° 40'N, 003° 40'E
    • 27m depth
    • sand
    • permanently well-mixed water column

Data Activity or Cruise Information

Data Activity

Start Date (yyyy-mm-dd) 1989-09-07
End Date (yyyy-mm-dd) 1989-09-17
Organization Undertaking ActivityDunstaffnage Marine Laboratory (now Scottish Association for Marine Science)
Country of OrganizationUnited Kingdom
Originator's Data Activity IdentifierRIG#60410
Platform Categorysubsurface mooring

North Sea Project POLRIG#60410

Deployment

This rig was deployed as part of the Resuspension experiments at the Northern Site.

Rig position 54° 35.42'N, 004° 49.23'E
Water depth (m) 45.0

Rig description

The U-shaped mooring consisted of three Aanderaa current meters (RCM7) and three SeaTech transmissometers (TR). A marker buoy was attached to the anchor, the anchor was attached by a ground line to a further anchor, which was attached to a sub-surface buoy (0.8 m diameter steel sphere). The three current meters and transmissometers were attached to this line.

Instrument Meter Height Parameters Measured
RCM7 9634 30.0 Current Speed and Direction, Temperature
RCM7 9680 10.0 Current Speed and Direction, Temperature
RCM7 9652 5.0 Current Speed and Direction, Temperature
TR 3 29.0 Beam Attenuance, Total Suspended Matter
TR 2 9.0 Beam Attenuance, Total Suspended Matter
TR 1 4.0 No data

Related Data Activity activities are detailed in Appendix 1


Fixed Station Information

Fixed Station Information

Station NameNSP Resusp. N
CategoryOffshore location
Latitude54° 34.80' N
Longitude4° 49.80' E
Water depth below MSL45.0 m

Fixed Station: North Sea Project Resuspension Experiment Northern Site

This site was one of two contrasting North Sea sites occupied during the North Sea Project Resuspension Experiment.

The Northern site was located in 45m of water and was characterised by a muddy sand bed and a seasonally stratified water column.

The rigs deployed here lie within a box bounded by co-ordinates 54.576N 4.801E at the southwest corner and 54.600N 4.865E at the northeast corner. Magnetic variation at this site was 2.9° west.

Northern site deployment history is summarised below:

Rig ID Meter type Meter height Start date Data return (days) Comment
00319

CM

TR

CM

TR

TR

30.0m

30.0m

10.0m

10.0m

 

16/01/89

16/01/89

16/01/89

16/01/89

16/01/89

5.7

5.7

5.7

5.7

0.0

N/A

N/A

N/A

N/A

No data

00320

CM

CM

CM

37.0m

31.0m

 

17/01/89

17/01/89

17/01/89

4.7

4.7

0.0

N/A

N/A

No data

00321

CM

CM

35.0m

 

17/01/89

17/01/89

4.9

0.0

N/A

No data

00322 TG 0.5m 16/01/89 6.8  
00323 TR 1.2m 17/01/89 5.0  
00324 MET 45.0m 16/01/89 7.0  
00325 WV 45.0m 16/01/89 6.0  
00326 ADCP 0.8m 18/01/89 5.0  
00352

CM

TR

CM

TR

CM

TR

21.5m

 

11.0m

9.0m

6.0m

4.0m

14/05/89

14/05/89

14/05/89

14/05/89

14/05/89

14/05/89

5.8

0.0

5.8

5.8

5.8

5.8

N/A

No data

N/A

N/A

N/A

N/A

00410

CM

TR

CM

TR

CM

TR

30.0m

29.0m

10.0m

9.0m

5.0m

 

07/09/89

07/09/89

07/09/89

07/09/89

07/09/89

07/09/89

9.7

9.7

9.7

9.7

9.7

0.0

N/A

N/A

N/A

N/A

N/A

No data

00411

CM

CM

36.0m

30.0m

08/09/89

08/09/89

8.2

8.2

 
00412

CM

CM

 

35.0m

08/09/89

08/09/89

0.0

5.8

No data

N/A

00413 TG   08/09/89 0.0 No data
00414 TR 1.2m 07/09/89 10.0  
00415 MET 45.0m 07/09/89 8.0  
00416 WV 45.0m 08/09/89 13.0  
00417 ADCP 0.8m 08/09/89 8.1  

ADCP = Acoustic Doppler Current Profiler
TR = Transmissometer
CM = Current Meter
MET = Met. Buoy
WV = Wave Rider
TG = Tide Gauge

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
Q value below limit of quantification

Appendix 1: RIG#60410

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
609988Transmittance/attenuance, turbidity, or SPM conc.1989-09-07 16:30:0054.5903 N, 4.8205 ENot applicable
610001Transmittance/attenuance, turbidity, or SPM conc.1989-09-07 16:35:0054.5903 N, 4.8205 ENot applicable
592139Currents -subsurface Eulerian1989-09-07 16:39:0054.5903 N, 4.8205 ENot applicable
592140Currents -subsurface Eulerian1989-09-07 16:39:0054.5903 N, 4.8205 ENot applicable

Appendix 2: NSP Resusp. N

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
592477Offshore sea floor pressure series1989-01-16 14:07:3054.5767 N, 4.8583 ENot applicable
609939Transmittance/attenuance, turbidity, or SPM conc.1989-01-16 16:50:0054.5917 N, 4.8633 ENot applicable
609940Transmittance/attenuance, turbidity, or SPM conc.1989-01-16 16:50:0054.5917 N, 4.8633 ENot applicable
580360Currents -subsurface Eulerian1989-01-16 17:00:0054.5917 N, 4.8633 ENot applicable
580359Currents -subsurface Eulerian1989-01-16 17:00:0654.5917 N, 4.8633 ENot applicable
609927Transmittance/attenuance, turbidity, or SPM conc.1989-01-17 09:30:0054.5917 N, 4.8633 ENot applicable
593143Currents -subsurface Eulerian1989-01-17 12:20:0054.5817 N, 4.855 ENot applicable
593131Currents -subsurface Eulerian1989-01-17 15:40:0054.59 N, 4.8017 ENot applicable
593155Currents -subsurface Eulerian1989-01-17 15:40:0054.59 N, 4.8017 ENot applicable
814919CTD or STD cast1989-01-17 20:22:0054.58333 N, 4.83067 ERRS Challenger CH44
814920CTD or STD cast1989-01-17 22:09:0054.5845 N, 4.81617 ERRS Challenger CH44
814932CTD or STD cast1989-01-18 00:07:0054.57867 N, 4.826 ERRS Challenger CH44
814944CTD or STD cast1989-01-18 02:02:0054.58017 N, 4.824 ERRS Challenger CH44
814956CTD or STD cast1989-01-18 04:07:0054.57883 N, 4.8275 ERRS Challenger CH44
814968CTD or STD cast1989-01-18 06:06:0054.57683 N, 4.83583 ERRS Challenger CH44
814981CTD or STD cast1989-01-18 08:02:0054.58017 N, 4.83017 ERRS Challenger CH44
814993CTD or STD cast1989-01-18 10:02:0054.57917 N, 4.829 ERRS Challenger CH44
604277Currents -subsurface Eulerian1989-01-18 11:39:2954.5983 N, 4.805 ENot applicable
815112CTD or STD cast1989-01-21 20:04:0054.5875 N, 4.84183 ERRS Challenger CH44
815124CTD or STD cast1989-01-21 22:05:0054.58783 N, 4.81567 ERRS Challenger CH44
815136CTD or STD cast1989-01-22 00:03:0054.583 N, 4.82783 ERRS Challenger CH44
815148CTD or STD cast1989-01-22 02:05:0054.58333 N, 4.84117 ERRS Challenger CH44
815161CTD or STD cast1989-01-22 04:07:0054.58383 N, 4.82517 ERRS Challenger CH44
815173CTD or STD cast1989-01-22 06:08:0054.58433 N, 4.83417 ERRS Challenger CH44
815185CTD or STD cast1989-01-22 08:03:0054.58717 N, 4.8395 ERRS Challenger CH44
815197CTD or STD cast1989-01-22 10:16:0054.58667 N, 4.83133 ERRS Challenger CH44
609952Transmittance/attenuance, turbidity, or SPM conc.1989-05-14 10:10:0054.5698 N, 4.8397 ENot applicable
609964Transmittance/attenuance, turbidity, or SPM conc.1989-05-14 10:20:0054.5698 N, 4.8397 ENot applicable
592103Currents -subsurface Eulerian1989-05-14 10:24:0054.5818 N, 4.8397 ENot applicable
592115Currents -subsurface Eulerian1989-05-14 10:25:0054.5818 N, 4.8397 ENot applicable
592127Currents -subsurface Eulerian1989-05-14 10:25:0054.5818 N, 4.8397 ENot applicable
816742CTD or STD cast1989-05-14 13:06:0054.5835 N, 4.8515 ERRS Challenger CH52
1258649Water sample data1989-05-14 13:11:0054.5835 N, 4.85142 ERRS Challenger CH52
1861836Water sample data1989-05-14 13:11:0054.5835 N, 4.85142 ERRS Challenger CH52
816754CTD or STD cast1989-05-14 14:25:0054.584 N, 4.84817 ERRS Challenger CH52
1258650Water sample data1989-05-14 14:30:0054.58398 N, 4.84817 ERRS Challenger CH52
1861848Water sample data1989-05-14 14:30:0054.58398 N, 4.84817 ERRS Challenger CH52
816766CTD or STD cast1989-05-14 15:19:0054.58233 N, 4.84783 ERRS Challenger CH52
1258662Water sample data1989-05-14 15:24:0054.58231 N, 4.84778 ERRS Challenger CH52
1861861Water sample data1989-05-14 15:24:0054.58231 N, 4.84778 ERRS Challenger CH52
816778CTD or STD cast1989-05-14 16:26:0054.582 N, 4.87633 ERRS Challenger CH52
1258674Water sample data1989-05-14 16:35:0054.58206 N, 4.87626 ERRS Challenger CH52
1861873Water sample data1989-05-14 16:35:0054.58206 N, 4.87626 ERRS Challenger CH52
816791CTD or STD cast1989-05-14 19:04:0054.57717 N, 4.8445 ERRS Challenger CH52
1258698Water sample data1989-05-14 19:10:0054.57724 N, 4.84447 ERRS Challenger CH52
1861885Water sample data1989-05-14 19:10:0054.57724 N, 4.84447 ERRS Challenger CH52
816809CTD or STD cast1989-05-14 20:02:0054.57383 N, 4.833 ERRS Challenger CH52
1258705Water sample data1989-05-14 20:08:0054.57378 N, 4.83298 ERRS Challenger CH52
1861897Water sample data1989-05-14 20:08:0054.57378 N, 4.83298 ERRS Challenger CH52
816810CTD or STD cast1989-05-14 21:18:0054.58467 N, 4.82417 ERRS Challenger CH52
1258717Water sample data1989-05-14 21:23:0054.58463 N, 4.82423 ERRS Challenger CH52
1861904Water sample data1989-05-14 21:23:0054.58463 N, 4.82423 ERRS Challenger CH52
816822CTD or STD cast1989-05-14 22:07:0054.58367 N, 4.82933 ERRS Challenger CH52
1258729Water sample data1989-05-14 22:12:0054.58374 N, 4.82939 ERRS Challenger CH52
1861916Water sample data1989-05-14 22:12:0054.58374 N, 4.82939 ERRS Challenger CH52
816834CTD or STD cast1989-05-14 23:10:0054.58867 N, 4.82883 ERRS Challenger CH52
1258730Water sample data1989-05-14 23:15:0054.58867 N, 4.82884 ERRS Challenger CH52
1861928Water sample data1989-05-14 23:15:0054.58867 N, 4.82884 ERRS Challenger CH52
816846CTD or STD cast1989-05-15 00:03:0054.586 N, 4.834 ERRS Challenger CH52
1258742Water sample data1989-05-15 00:08:0054.58603 N, 4.83405 ERRS Challenger CH52
1861941Water sample data1989-05-15 00:08:0054.58603 N, 4.83405 ERRS Challenger CH52
816858CTD or STD cast1989-05-15 02:02:0054.58683 N, 4.85267 ERRS Challenger CH52
1258754Water sample data1989-05-15 02:07:0054.58682 N, 4.85261 ERRS Challenger CH52
1861953Water sample data1989-05-15 02:07:0054.58682 N, 4.85261 ERRS Challenger CH52
816871CTD or STD cast1989-05-15 03:12:0054.58333 N, 4.85717 ERRS Challenger CH52
1258766Water sample data1989-05-15 03:18:0054.58339 N, 4.85717 ERRS Challenger CH52
1861965Water sample data1989-05-15 03:18:0054.58339 N, 4.85717 ERRS Challenger CH52
816883CTD or STD cast1989-05-15 04:02:0054.58267 N, 4.8505 ERRS Challenger CH52
1258778Water sample data1989-05-15 04:08:0054.58266 N, 4.85057 ERRS Challenger CH52
1861977Water sample data1989-05-15 04:08:0054.58266 N, 4.85057 ERRS Challenger CH52
816895CTD or STD cast1989-05-15 05:01:0054.58483 N, 4.8675 ERRS Challenger CH52
1258791Water sample data1989-05-15 05:07:0054.58475 N, 4.86752 ERRS Challenger CH52
1861989Water sample data1989-05-15 05:07:0054.58475 N, 4.86752 ERRS Challenger CH52
816902CTD or STD cast1989-05-15 18:04:0054.575 N, 4.85217 ERRS Challenger CH52
1861990Water sample data1989-05-15 18:10:0054.57495 N, 4.85211 ERRS Challenger CH52
817327CTD or STD cast1989-05-19 18:14:0054.60367 N, 4.84117 ERRS Challenger CH52
1259223Water sample data1989-05-19 18:20:0054.60364 N, 4.84119 ERRS Challenger CH52
1862409Water sample data1989-05-19 18:20:0054.60364 N, 4.84119 ERRS Challenger CH52
817339CTD or STD cast1989-05-19 19:01:0054.60867 N, 4.85017 ERRS Challenger CH52
1259235Water sample data1989-05-19 19:05:0054.60873 N, 4.85017 ERRS Challenger CH52
1862410Water sample data1989-05-19 19:05:0054.60873 N, 4.85017 ERRS Challenger CH52
817340CTD or STD cast1989-05-19 21:05:0054.58317 N, 4.831 ERRS Challenger CH52
1259259Water sample data1989-05-19 21:09:0054.58319 N, 4.83101 ERRS Challenger CH52
1862422Water sample data1989-05-19 21:09:0054.58319 N, 4.83101 ERRS Challenger CH52
817352CTD or STD cast1989-05-19 22:04:0054.57167 N, 4.81733 ERRS Challenger CH52
1259260Water sample data1989-05-19 22:08:0054.57167 N, 4.81739 ERRS Challenger CH52
1862434Water sample data1989-05-19 22:08:0054.57167 N, 4.81739 ERRS Challenger CH52
817364CTD or STD cast1989-05-19 23:03:0054.58167 N, 4.817 ERRS Challenger CH52
1259272Water sample data1989-05-19 23:07:0054.58173 N, 4.81694 ERRS Challenger CH52
1862446Water sample data1989-05-19 23:07:0054.58173 N, 4.81694 ERRS Challenger CH52
817376CTD or STD cast1989-05-20 00:01:0054.57683 N, 4.7875 ERRS Challenger CH52
1259284Water sample data1989-05-20 00:06:0054.57684 N, 4.7875 ERRS Challenger CH52
1862458Water sample data1989-05-20 00:06:0054.57684 N, 4.7875 ERRS Challenger CH52
817388CTD or STD cast1989-05-20 01:04:0054.585 N, 4.8195 ERRS Challenger CH52
1259296Water sample data1989-05-20 01:08:0054.58498 N, 4.81951 ERRS Challenger CH52
1862471Water sample data1989-05-20 01:08:0054.58498 N, 4.81951 ERRS Challenger CH52
817407CTD or STD cast1989-05-20 02:18:0054.589 N, 4.82683 ERRS Challenger CH52
1259303Water sample data1989-05-20 02:21:0054.58907 N, 4.82682 ERRS Challenger CH52
1862483Water sample data1989-05-20 02:21:0054.58907 N, 4.82682 ERRS Challenger CH52
817419CTD or STD cast1989-05-20 03:04:0054.58217 N, 4.811 ERRS Challenger CH52
1259315Water sample data1989-05-20 03:09:0054.58212 N, 4.81097 ERRS Challenger CH52
1862495Water sample data1989-05-20 03:09:0054.58212 N, 4.81097 ERRS Challenger CH52
817420CTD or STD cast1989-05-20 04:09:0054.57583 N, 4.81083 ERRS Challenger CH52
1259327Water sample data1989-05-20 04:15:0054.57582 N, 4.81084 ERRS Challenger CH52
1862502Water sample data1989-05-20 04:15:0054.57582 N, 4.81084 ERRS Challenger CH52
817432CTD or STD cast1989-05-20 05:11:0054.58133 N, 4.85733 ERRS Challenger CH52
1259339Water sample data1989-05-20 05:15:0054.58134 N, 4.85734 ERRS Challenger CH52
1862514Water sample data1989-05-20 05:15:0054.58134 N, 4.85734 ERRS Challenger CH52
817444CTD or STD cast1989-05-20 08:51:0054.58367 N, 4.83367 ERRS Challenger CH52
1862526Water sample data1989-05-20 09:12:0054.58368 N, 4.83365 ERRS Challenger CH52
817757CTD or STD cast1989-05-22 23:32:0054.58233 N, 4.83483 ERRS Challenger CH52
1259536Water sample data1989-05-22 23:38:0054.58232 N, 4.83483 ERRS Challenger CH52
1862827Water sample data1989-05-22 23:38:0054.58232 N, 4.83483 ERRS Challenger CH52
817769CTD or STD cast1989-05-23 00:33:0054.58517 N, 4.8345 ERRS Challenger CH52
1259548Water sample data1989-05-23 00:37:0054.58511 N, 4.83444 ERRS Challenger CH52
1862839Water sample data1989-05-23 00:37:0054.58511 N, 4.83444 ERRS Challenger CH52
817770CTD or STD cast1989-05-23 01:32:0054.58033 N, 4.84167 ERRS Challenger CH52
1259561Water sample data1989-05-23 01:37:0054.58041 N, 4.84159 ERRS Challenger CH52
1862840Water sample data1989-05-23 01:37:0054.58041 N, 4.84159 ERRS Challenger CH52
817782CTD or STD cast1989-05-23 02:33:0054.5835 N, 4.82717 ERRS Challenger CH52
1259573Water sample data1989-05-23 02:38:0054.58344 N, 4.82713 ERRS Challenger CH52
1862852Water sample data1989-05-23 02:38:0054.58344 N, 4.82713 ERRS Challenger CH52
817794CTD or STD cast1989-05-23 03:32:0054.58233 N, 4.81683 ERRS Challenger CH52
1259585Water sample data1989-05-23 03:36:0054.58241 N, 4.81685 ERRS Challenger CH52
1862864Water sample data1989-05-23 03:36:0054.58241 N, 4.81685 ERRS Challenger CH52
817801CTD or STD cast1989-05-23 04:32:0054.58367 N, 4.841 ERRS Challenger CH52
1259597Water sample data1989-05-23 04:37:0054.58374 N, 4.84095 ERRS Challenger CH52
1862876Water sample data1989-05-23 04:37:0054.58374 N, 4.84095 ERRS Challenger CH52
817813CTD or STD cast1989-05-23 05:31:0054.5815 N, 4.837 ERRS Challenger CH52
1259604Water sample data1989-05-23 05:36:0054.58148 N, 4.83695 ERRS Challenger CH52
1862888Water sample data1989-05-23 05:36:0054.58148 N, 4.83695 ERRS Challenger CH52
817825CTD or STD cast1989-05-23 06:31:0054.581 N, 4.84233 ERRS Challenger CH52
1259616Water sample data1989-05-23 06:35:0054.58095 N, 4.84228 ERRS Challenger CH52
1862907Water sample data1989-05-23 06:35:0054.58095 N, 4.84228 ERRS Challenger CH52
817837CTD or STD cast1989-05-23 07:34:0054.58517 N, 4.83883 ERRS Challenger CH52
1259628Water sample data1989-05-23 07:39:0054.58521 N, 4.8389 ERRS Challenger CH52
1862919Water sample data1989-05-23 07:39:0054.58521 N, 4.8389 ERRS Challenger CH52
817849CTD or STD cast1989-05-23 08:37:0054.58533 N, 4.8345 ERRS Challenger CH52
1259641Water sample data1989-05-23 08:42:0054.58528 N, 4.83449 ERRS Challenger CH52
1862920Water sample data1989-05-23 08:42:0054.58528 N, 4.83449 ERRS Challenger CH52
817850CTD or STD cast1989-05-23 09:37:0054.58433 N, 4.83167 ERRS Challenger CH52
1259653Water sample data1989-05-23 09:41:0054.58437 N, 4.83167 ERRS Challenger CH52
1862932Water sample data1989-05-23 09:41:0054.58437 N, 4.83167 ERRS Challenger CH52
817862CTD or STD cast1989-05-23 10:36:0054.5845 N, 4.83817 ERRS Challenger CH52
1259665Water sample data1989-05-23 10:42:0054.58447 N, 4.83809 ERRS Challenger CH52
1862944Water sample data1989-05-23 10:42:0054.58447 N, 4.83809 ERRS Challenger CH52
817874CTD or STD cast1989-05-23 11:35:0054.57883 N, 4.8325 ERRS Challenger CH52
1259677Water sample data1989-05-23 11:39:0054.57875 N, 4.8325 ERRS Challenger CH52
1862956Water sample data1989-05-23 11:39:0054.57875 N, 4.8325 ERRS Challenger CH52
817886CTD or STD cast1989-05-23 12:35:0054.5835 N, 4.83533 ERRS Challenger CH52
1259689Water sample data1989-05-23 12:39:0054.5835 N, 4.83532 ERRS Challenger CH52
1862968Water sample data1989-05-23 12:39:0054.5835 N, 4.83532 ERRS Challenger CH52
817898CTD or STD cast1989-05-23 13:31:0054.58483 N, 4.83567 ERRS Challenger CH52
1259690Water sample data1989-05-23 13:36:0054.58476 N, 4.8357 ERRS Challenger CH52
1862981Water sample data1989-05-23 13:36:0054.58476 N, 4.8357 ERRS Challenger CH52
819807CTD or STD cast1989-09-07 08:55:0054.58267 N, 4.85583 ERRS Challenger CH60
609976Transmittance/attenuance, turbidity, or SPM conc.1989-09-07 11:25:0054.59 N, 4.8455 ENot applicable
819819CTD or STD cast1989-09-07 15:37:0054.5905 N, 4.81983 ERRS Challenger CH60
609988Transmittance/attenuance, turbidity, or SPM conc.1989-09-07 16:30:0054.5903 N, 4.8205 ENot applicable
610001Transmittance/attenuance, turbidity, or SPM conc.1989-09-07 16:35:0054.5903 N, 4.8205 ENot applicable
592139Currents -subsurface Eulerian1989-09-07 16:39:0054.5903 N, 4.8205 ENot applicable
592140Currents -subsurface Eulerian1989-09-07 16:39:0054.5903 N, 4.8205 ENot applicable
819820CTD or STD cast1989-09-07 19:34:0054.58267 N, 4.834 ERRS Challenger CH60
819832CTD or STD cast1989-09-07 20:53:0054.58333 N, 4.83667 ERRS Challenger CH60
819844CTD or STD cast1989-09-07 21:55:0054.5805 N, 4.83817 ERRS Challenger CH60
819856CTD or STD cast1989-09-07 23:07:0054.58733 N, 4.846 ERRS Challenger CH60
819868CTD or STD cast1989-09-08 00:03:0054.587 N, 4.86133 ERRS Challenger CH60
819881CTD or STD cast1989-09-08 01:29:0054.57933 N, 4.83583 ERRS Challenger CH60
819893CTD or STD cast1989-09-08 02:27:0054.57833 N, 4.851 ERRS Challenger CH60
819900CTD or STD cast1989-09-08 03:45:0054.57817 N, 4.83567 ERRS Challenger CH60
819912CTD or STD cast1989-09-08 05:00:0054.5775 N, 4.829 ERRS Challenger CH60
1257714Water sample data1989-09-08 05:05:0054.57751 N, 4.82906 ERRS Challenger CH60
819924CTD or STD cast1989-09-08 06:19:0054.57917 N, 4.82917 ERRS Challenger CH60
1257726Water sample data1989-09-08 06:24:0054.57918 N, 4.82911 ERRS Challenger CH60
819936CTD or STD cast1989-09-08 07:33:0054.58367 N, 4.83367 ERRS Challenger CH60
1257738Water sample data1989-09-08 07:38:0054.58365 N, 4.83372 ERRS Challenger CH60
604289Currents -subsurface Eulerian1989-09-08 11:39:2754.586 N, 4.8457 ENot applicable
593167Currents -subsurface Eulerian1989-09-08 12:30:0054.5818 N, 4.8372 ENot applicable
593180Currents -subsurface Eulerian1989-09-08 12:30:0054.5818 N, 4.8372 ENot applicable
593179Currents -subsurface Eulerian1989-09-08 13:40:0054.5765 N, 4.847 ENot applicable
820114CTD or STD cast1989-09-12 19:07:0054.58117 N, 4.834 ERRS Challenger CH60
1257911Water sample data1989-09-12 19:11:0054.58116 N, 4.83396 ERRS Challenger CH60
820126CTD or STD cast1989-09-12 20:26:0054.58183 N, 4.83633 ERRS Challenger CH60
1257923Water sample data1989-09-12 20:31:0054.58182 N, 4.83637 ERRS Challenger CH60
820138CTD or STD cast1989-09-12 21:05:0054.5805 N, 4.8365 ERRS Challenger CH60
1257935Water sample data1989-09-12 21:09:0054.58057 N, 4.83648 ERRS Challenger CH60
820151CTD or STD cast1989-09-12 22:32:0054.5825 N, 4.8345 ERRS Challenger CH60
1257947Water sample data1989-09-12 22:37:0054.58249 N, 4.83451 ERRS Challenger CH60
820163CTD or STD cast1989-09-12 23:09:0054.582 N, 4.82883 ERRS Challenger CH60
1257959Water sample data1989-09-12 23:13:0054.58205 N, 4.82889 ERRS Challenger CH60
820175CTD or STD cast1989-09-13 00:56:0054.583 N, 4.833 ERRS Challenger CH60
1257960Water sample data1989-09-13 00:59:0054.58304 N, 4.83292 ERRS Challenger CH60
820187CTD or STD cast1989-09-13 01:35:0054.5815 N, 4.83033 ERRS Challenger CH60
1257972Water sample data1989-09-13 01:39:0054.58142 N, 4.83031 ERRS Challenger CH60
820199CTD or STD cast1989-09-13 03:16:0054.58 N, 4.837 ERRS Challenger CH60
1257984Water sample data1989-09-13 03:22:0054.57993 N, 4.83696 ERRS Challenger CH60
820206CTD or STD cast1989-09-13 04:14:0054.5835 N, 4.83367 ERRS Challenger CH60
1257996Water sample data1989-09-13 04:18:0054.58356 N, 4.83369 ERRS Challenger CH60
820218CTD or STD cast1989-09-13 05:46:0054.582 N, 4.83383 ERRS Challenger CH60
1258011Water sample data1989-09-13 05:50:0054.58206 N, 4.83379 ERRS Challenger CH60
820231CTD or STD cast1989-09-13 17:35:0054.583 N, 4.83833 ERRS Challenger CH60
1258035Water sample data1989-09-13 17:38:0054.58301 N, 4.83836 ERRS Challenger CH60
820243CTD or STD cast1989-09-13 19:27:0054.5835 N, 4.83417 ERRS Challenger CH60
1258047Water sample data1989-09-13 19:31:0054.58353 N, 4.83415 ERRS Challenger CH60
820255CTD or STD cast1989-09-13 21:01:0054.57833 N, 4.83283 ERRS Challenger CH60
1258059Water sample data1989-09-13 21:05:0054.57828 N, 4.83276 ERRS Challenger CH60
820267CTD or STD cast1989-09-13 22:01:0054.5815 N, 4.8315 ERRS Challenger CH60
1258060Water sample data1989-09-13 22:05:0054.58145 N, 4.83145 ERRS Challenger CH60
820279CTD or STD cast1989-09-13 23:14:0054.58367 N, 4.8305 ERRS Challenger CH60
1258072Water sample data1989-09-13 23:18:0054.58368 N, 4.83058 ERRS Challenger CH60
820280CTD or STD cast1989-09-14 00:00:0054.583 N, 4.8345 ERRS Challenger CH60
1258084Water sample data1989-09-14 00:03:0054.58301 N, 4.83446 ERRS Challenger CH60
820292CTD or STD cast1989-09-14 01:05:0054.5815 N, 4.82767 ERRS Challenger CH60
1258096Water sample data1989-09-14 01:08:0054.58157 N, 4.82766 ERRS Challenger CH60
820311CTD or STD cast1989-09-14 02:07:0054.58233 N, 4.83617 ERRS Challenger CH60
1258103Water sample data1989-09-14 02:11:0054.58228 N, 4.83615 ERRS Challenger CH60
820323CTD or STD cast1989-09-14 03:28:0054.58317 N, 4.8345 ERRS Challenger CH60
1258115Water sample data1989-09-14 03:33:0054.58321 N, 4.83455 ERRS Challenger CH60
820335CTD or STD cast1989-09-14 04:06:0054.58383 N, 4.82833 ERRS Challenger CH60
1258127Water sample data1989-09-14 04:10:0054.58377 N, 4.82841 ERRS Challenger CH60
820347CTD or STD cast1989-09-14 05:12:0054.58233 N, 4.828 ERRS Challenger CH60
1258139Water sample data1989-09-14 05:16:0054.58231 N, 4.82802 ERRS Challenger CH60
820359CTD or STD cast1989-09-14 06:01:0054.58367 N, 4.8335 ERRS Challenger CH60
1258140Water sample data1989-09-14 06:04:0054.58368 N, 4.83358 ERRS Challenger CH60
820360CTD or STD cast1989-09-14 07:25:0054.58317 N, 4.83433 ERRS Challenger CH60
820440CTD or STD cast1989-09-16 18:38:0054.58233 N, 4.838 ERRS Challenger CH60
1258220Water sample data1989-09-16 18:43:0054.58228 N, 4.83807 ERRS Challenger CH60
820452CTD or STD cast1989-09-16 19:43:0054.58133 N, 4.84417 ERRS Challenger CH60
1258232Water sample data1989-09-16 19:46:0054.58136 N, 4.84409 ERRS Challenger CH60
820464CTD or STD cast1989-09-16 21:07:0054.58583 N, 4.84933 ERRS Challenger CH60
1258244Water sample data1989-09-16 21:12:0054.58582 N, 4.84933 ERRS Challenger CH60
820476CTD or STD cast1989-09-16 22:04:0054.5815 N, 4.82867 ERRS Challenger CH60
1258256Water sample data1989-09-16 22:08:0054.58154 N, 4.82859 ERRS Challenger CH60
820488CTD or STD cast1989-09-16 23:19:0054.58017 N, 4.835 ERRS Challenger CH60
1258268Water sample data1989-09-16 23:23:0054.58018 N, 4.83498 ERRS Challenger CH60
820507CTD or STD cast1989-09-17 00:08:0054.581 N, 4.83933 ERRS Challenger CH60
1258281Water sample data1989-09-17 00:12:0054.58105 N, 4.83935 ERRS Challenger CH60
820519CTD or STD cast1989-09-17 01:36:0054.583 N, 4.836 ERRS Challenger CH60
1258293Water sample data1989-09-17 01:41:0054.58304 N, 4.83593 ERRS Challenger CH60
820520CTD or STD cast1989-09-17 02:15:0054.58033 N, 4.827 ERRS Challenger CH60
1258300Water sample data1989-09-17 02:18:0054.58029 N, 4.82695 ERRS Challenger CH60
820532CTD or STD cast1989-09-17 03:44:0054.58367 N, 4.83433 ERRS Challenger CH60
1258312Water sample data1989-09-17 03:49:0054.58362 N, 4.83427 ERRS Challenger CH60
820544CTD or STD cast1989-09-17 04:26:0054.58217 N, 4.829 ERRS Challenger CH60
1258324Water sample data1989-09-17 04:31:0054.58223 N, 4.82901 ERRS Challenger CH60
820556CTD or STD cast1989-09-17 05:55:0054.5815 N, 4.83383 ERRS Challenger CH60
1258336Water sample data1989-09-17 06:00:0054.58154 N, 4.83388 ERRS Challenger CH60
820568CTD or STD cast1989-09-17 06:21:0054.58367 N, 4.839 ERRS Challenger CH60
820581CTD or STD cast1989-09-17 09:56:0054.59117 N, 4.83167 ERRS Challenger CH60
820593CTD or STD cast1989-09-17 12:45:0054.59 N, 4.85017 ERRS Challenger CH60
824023CTD or STD cast1990-07-30 12:38:0054.59133 N, 4.82517 ERRS Challenger CH69