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Metadata Report for BODC Series Reference Number 1635587


Metadata Summary

Data Description

Data Category Sea surface elevation -unspecified
Instrument Type
NameCategories
Aanderaa WLR 7 Water Level Recorder  sea level recorders; water temperature sensor
Instrument Mounting subsurface mooring
Originating Country France
Originator Dr Valerie Quiniou-Ramus
Originating Organization Total S.A.
Processing Status QC in progress
Online delivery of data Download not available
Project(s) SIMORC
 

Data Identifiers

Originator's Identifier ICHTHYS_P9_WATER_LEVEL_20081031_20090519_48944_0
BODC Series Reference 1635587
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2008-10-31 05:39
End Time (yyyy-mm-dd hh:mm) 2009-05-18 21:57
Nominal Cycle Interval 600.0 seconds
 

Spatial Co-ordinates

Latitude 12.70317 S ( 12° 42.2' S )
Longitude 126.95028 E ( 126° 57.0' E )
Positional Uncertainty 0.01 to 0.05 n.miles
Minimum Sensor or Sampling Depth 0.0 m
Maximum Sensor or Sampling Depth 0.0 m
Minimum Sensor or Sampling Height 82.0 m
Maximum Sensor or Sampling Height 82.0 m
Sea Floor Depth 82.0 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 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)
ACYCAA011DimensionlessSequence number
DEPHFP011MetresDepth below surface of the water body by fixed in-situ pressure sensor and conversion to depth using unspecified algorithm
TEMPST011Degrees CelsiusTemperature 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

SIMORC data access conditions

The data collated and held at BODC on behalf of the SIMORC project are restricted. However, the data will be available to download from the Official SIMORC Website, as part of the project protocol. The data set will initially include data from the oil companies TOTAL, Shell and BP.


Narrative Documents

Aanderaa Water Level Recorder Model 7

The Water Level Recorder (WLR) model 7 is a self-contained, high precision instrument specifically designed for recording of ocean water levels through precise measurement of hydrostatic pressure. The WLR records pressure, temperature and conductivity (optional) at regular intervals, enabling precise variations in water level to be calculated. The pressure sensor consists of an oscillating quartz crystal which shifts frequency with the force applied to it. Temperature is measured by a Fenwall thermistor.

The data from the WLR7 are stored in a solid-state data storage unit (DSU) which can store up to 65,500 ten bit, PDC-4 coded words in a set of EEPROMS. Click the link for further details on theWLR7.

Specifications

Pressure

Oscillator Frequency 36-40 kHz
Resolution 0.001% of range
Repeatability ± 0.01% of full scale
Integration 40 s
Ranges available 0 - 700 kPA (60 m) (standard)
0 - 3500 kPa (340 m) (standard)

Temperature

The thermistor is a Fenwall GB32JM19

Range -3 °C to +35 °C
Accuracy ± 0.1 °C
Resolution 0.04 °C
Response Time 30 s

Conductivity (optional)

Sensor Type Conductivity Cell 3094
Ranges 0 - 77 mmho cm-1 (standard)
0 - 42 mmho cm-1 (on request)
Accuracy ± 0.25 mmho cm-1
Resolution 0.1% of range

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

BODC Processing

Data were received by BODC in MS Excel spreadsheets. They were stabilised into a text format and then reformatted to QXF format using BODC transfer function 518. The following table shows how the variables within the files were mapped to the appropriate BODC parameter codes:

Original parameter name Original Units Description BODC Parameter Code BODC Units Comments
Time DD-MM-YYYY hh:mm:ss Date and time (Western Standard Time) AADYAA01 + AAFDZZ01 Day number and day fraction Converted to GMT by subtracting 8 hours.
CurSpd m/s Speed LCSAEL01 cm/sec *100
CurDirn degrees True Direction LCDAEL01 degrees True  
SeaWaterTemp degrees Celsius Sea temperature TEMPPR01 degrees Celsius  

Following transfer to QXF, the data were screened using BODC's in-house visualisation software, EDSERPLO.

BODC Processing

Data were received by BODC in Excel spreadsheets. These were stabilised into text files and then reformatted to QXF format using BODC transfer function 518. The following table shows how the variables within the files were mapped to the appropriate BODC parameter codes:

Original parameter name Original Units Description BODC Parameter Code BODC Units Comments
Time DD-MON-YY hh:mm:ss Date and time (Western Standard Time) AADYAA01 + AAFDZZ01 Day number and day fraction (GMT)  
Depth metres Water depth DEPHFP01 metres  
Temperature degrees Celsius Seawater temperature TEMPST01 degrees Celsius  

Following transfer to QXF, the data were screened using BODC's in-house visualisation software, EDSERPLO.


Project Information

System of Industry Metocean data for the Offshore and Research Communities (SIMORC)

The EU-funded SIMORC project is a collaborative effort between MARIS (Netherlands), BODC (UK), the International Association of Oil and Gas Producers (OGP) and IOC-IODE to provide a harmonised and quality controlled metocean data set from data collected by oil and gas producers, accessible through the SIMORC protocol.


Data Activity or Cruise Information

Data Activity

Start Date (yyyy-mm-dd) 2008-10-30
End Date (yyyy-mm-dd) 2009-11-19
Organization Undertaking ActivityTotal S.A.
Country of OrganizationFrance
Originator's Data Activity IdentifierIchthys P9 CM04
Platform Categorysubsurface mooring

SIMORC Total Ichthys - P9 Current Meter mooring.

There was 1 survey at this site, consisting of a single mooring.

In this survey, the mooring was deployed in a water depth (defined as the Lowest Astronomical Tide) of 82 metres. (Nominal position of 12.70317°S, 126.95029°E):

Meter No. Instrument Height Above Seabed Instrument Type Time Period (Western Standard Time = UTC+8) Comments
  25m CM04 31-OCT-2008 13:30 to 19-MAY-2009 06:10  
  2.6m CM04 31-OCT-2008 13:30 to 19-MAY-2009 06:10  

On the morning of 19th May 2009, the mooring was repositioned in a water depth (defined as the Lowest Astronomical Tide) of 82 metres. (Nominal position of 12.70332°S, 126.9502°E):

Meter No. Instrument Height Above Seabed Instrument Type Time Period (Western Standard Time = UTC+8) Comments
  25m CM04 19-MAY-2009 11:30 to 19-NOV-2009 14:20  
  2.6m CM04 19-MAY-2009 11:30 to 10-SEP-2009 23:06  

Related Data Activity activities are detailed in Appendix 1

Cruise

Cruise Name 2008
Departure Date 2008-10-23
Arrival Date 2008-11-10
Principal Scientist(s)Unknown (Unknown)
Ship MV Bhagwan K

Complete Cruise Metadata Report is available here


Fixed Station Information


No Fixed Station Information held for the Series


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: Ichthys P9 CM04

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
1634989Currents -subsurface Eulerian2008-10-31 05:30:0012.70317 S, 126.95029 EMV Bhagwan K 2008
1634990Currents -subsurface Eulerian2008-10-31 05:30:0012.70317 S, 126.9503 EMV Bhagwan K 2008
1635004Currents -subsurface Eulerian2009-05-19 03:30:0012.70332 S, 126.9502 EAtlas 2000 2009
1635016Currents -subsurface Eulerian2009-05-19 03:30:0012.70332 S, 126.9502 EAtlas 2000 2009