Metadata Report for BODC Series Reference Number 906877


Metadata Summary

Data Description

Data Category Sound velocity cast
Instrument Type Sound Velocity Probe
Instrument Mounting vessel at fixed position
Originating Country France
Originator Dr Valerie Quiniou-Ramus
Originating Organization Total S.A.
Processing Status banked
Project(s) SIMORC
 

Data Identifiers

Originator's Identifier 251103
BODC Series Reference 906877
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2003-11-25 18:10
End Time (yyyy-mm-dd hh:mm) -
Nominal Cycle Interval -
 

Spatial Co-ordinates

Latitude 0.75617 S ( 0° 45.4' S )
Longitude 117.78923 E ( 117° 47.4' E )
Positional Uncertainty 0.01 to 0.05 n.miles
Minimum Sensor Depth 0.4 m
Maximum Sensor Depth 85.8 m
Minimum Sensor Height 0.2 m
Maximum Sensor Height 85.6 m
Sea Floor Depth 86.0 m
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 Unspecified -
Sea Floor Depth Datum Chart reference - Depth extracted from available chart
 

Parameters

BODC CODE Rank Units Short Title Title
ACYCAA01 1 Dimensionless Record_No Sequence number
ADEPZZ01 1 Metres DepBelowSurf Depth below surface of the water body
SVELXXXX 1 Metres per second SndVel_WC Sound velocity in the water body
TEMPPR01 1 Degrees Celsius Temp Temperature 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

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

BODC CTD Screening

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

Header information is inspected for:

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

Data cycles are inspected using depth series plots of all parameters. These presentations undergo screening to detect infeasible values within the data cycles themselves and inconsistencies when comparing 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 that may be flagged as suspect:

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.

The following types of inconsistency are detected automatically by software:

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:

This 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's making are not introduced.

BODC Processing

Data were received by BODC in Excel files. These series were reformatted to the internal QXF format using BODC transfer function 422. The following table shows how the variables within the file 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:MI date and time * AADYAA01 + AAFDZZ01 day number and day fraction GMT Conversion by transfer
DEPTH m   ADEPZZ01 m  
VELOCITY m.s -1 Sound velocity SVELXXXX m.s -1  
TEMP degrees Celsius Temperature TEMPPR01 degrees Celsius  

* The originator did not specify whether time is GMT or not.

Following transfer to QXF, the data were screened using BODC's in-house visualisation software, EDSERPLO. Any data considered as suspect were flagged 'M'.


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

Cruise

Cruise Name 5/09
Departure Date 2003-11-25
Arrival Date 2003-11-25
Principal Scientist(s)
Ship MV Geo Surveyor

Complete Cruise Metadata Report is available here


Fixed Station Information

Fixed Station Information

Station NameIndonesia Sisi Nubi
CategoryOffshore location
Latitude1° 20.15' S
Longitude117° 35.98' E
Water depth below MSL251.0 m

SIMORC: TOTAL Indonesia Sisi Nubi Fixed Station Document

9 sound velocity and temperature measurements were taken from 14/11/2003 to 04/12/2003 at this site.

The nominal position of the instrument is 1.33586° S; 117.59962° E.

Sound velocity and temperature data were collected on behalf of TOTAL from Sisi Nubi fixed station as follows:

Instrument Serial number Latitude Longitude Start Date Comments
Sound velocity probe   0.87177° S 117.75545° E 14/11/2003 07:30:00  
Sound velocity probe   0.92005° S 117.7087° E 20/11/2003 19:12:00  
Sound velocity probe   0.9256° S 117.70342° E 23/11/2003 13:25:00  
Sound velocity probe   0.87783° S 117.72897° E 24/11/2003 18:30:00  
Sound velocity probe   0.75617° S 117.78923° E 25/11/2003 18:10:00  
Sound velocity probe   0.71035° S 117.70173° E 27/11/2003 21:35:00  
Sound velocity probe   1.0978 ° S 117.32985 ° E 04/12/2003 05:58:00  
Sound velocity probe   1.09537° S 117.3467° E 10/12/2003 12:18:00  
Sound velocity probe   4.76778° S 117.33253° E 12/12/2003 13:27:00  

Other Cruises linked to this Fixed Station (with the number of series) - 1/09 (1) 2/09 (1) 3/09 (1) 4/09 (1) 6/09 (1) 7/09 (1) 8/09 (1) 9/09 (1)


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