Metadata Report for BODC Series Reference Number 1717373
Metadata Summary
Problem Reports
Data Access Policy
Narrative Documents
Project Information
Data Activity or Cruise Information
Fixed Station Information
BODC Quality Flags
SeaDataNet Quality Flags
Metadata Summary
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Time Co-ordinates(UT) |
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Problem Reports
No Problem Report Found in the Database
Quality report - iSTAR Moorings
It is clear from data from pressure sensors (and other sensors measuring the orientation of instruments on the mooring) that the iSTAR moorings were occasionally displaced in the water column. Given the location of the mooring it is likely that this disruption was caused by ice bergs knocking in to the mooring array. This was particularly noticeable in the data from moorings iSTAR6 (where the array became ~ 60m deeper on 05 January 2013), iSTAR9 (where the array became ~ 10 m deeper between 14 and 17 November 2013) and PIG_S (where the array became ~ 50 m deeper on the 20 July 2014 and then ~50 m deeper again on 30 July 2015).
Data Access Policy
Open 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.
If the Information Provider does not provide a specific attribution statement, or if you are using Information from several Information Providers and multiple attributions are not practical in your product or application, you may consider using the following:
"Contains public sector information licensed under the Open Government Licence v1.0."
Narrative Documents
BODC Processing - iSTAR Moored Aqualoggers
Data were received by BODC in Matlab files, with one file containing all data from an iSTAR mooring array. The data were reformatted to QXF (a NetCDF file format) by in house software. A separate QXF file was created for data from each instrument. Metadata were also extracted from the originator's file and used to populate the BODC database.
The following tables shows how the variables within the files were mapped to appropriate BODC parameter codes:
Originator's parameter name | Originator's units | Description | BODC Parameter Code | BODC Units | Comments |
---|---|---|---|---|---|
temp | Degrees Celsius | Temperature of the water body | TEMPPR01 | Degrees Celsius | |
press | dbar | Pressure (measured variable) exerted by the water body by fixed in-situ pressure sensor and corrected to read zero at sea level | PRESPR01 | dbar | If pressure data were supplied |
Following transfer to QXF, the data were quality controlled using BODC's in-house visualisation software.
Originator's processing - iSTAR Moored Aqualoggers
Data processing
All Aqualoggers temperature sensors were calibrated at BAS on 20 to 22 July 2011 prior to deployment.
Lookup tables used to correct the temperature data are available on request from BODC in the format supplied by the originator.
These calibrations appear to have worked very well, except for Aqualogger S/N 1221 on iSTAR1, which under read considerably, and has had a temperature offset of 0.2967 degrees Celsius applied, based on CTD casts at deployment and recovery.
Mooring | Serial number | Temperature recorded? | Pressure recorded? | Comments |
---|---|---|---|---|
istar1 | al_1218 | Yes | No | |
istar1 | al_1219 | Yes | No | |
istar1 | al_1220 | Yes | No | |
istar1 | al_1221 | Yes | No | Temperature offset applied (see above for details) |
istar1 | al_1313 | Yes | Yes | |
istar1 | al_360 | Yes | No | |
istar1 | al_361 | Yes | No | |
istar4 | al_1211 | Yes | No | |
istar4 | al_1212 | Yes | No | |
istar4 | al_1310 | Yes | Yes | |
istar5 | al_1206 | Yes | No | |
istar5 | al_1207 | Yes | No | |
istar5 | al_1208 | Yes | No | |
istar5 | al_1209 | Yes | No | |
istar5 | al_1210 | Yes | No | |
istar5 | al_1309 | Yes | Yes | |
istar6 | al_1204 | Yes | No | |
istar6 | al_1205 | Yes | No | |
istar6 | al_1308 | Yes | Yes | |
istar7 | al_1193 | Yes | No | |
istar7 | al_1194 | Yes | No | |
istar7 | al_1195 | Yes | No | |
istar7 | al_1196 | Yes | No | |
istar7 | al_1197 | Yes | No | |
istar7 | al_1305 | Yes | Yes | |
istar8 | al_1198 | Yes | No | |
istar8 | al_1199 | Yes | No | |
istar8 | al_1200 | Yes | No | |
istar8 | al_1201 | Yes | No | |
istar8 | al_1306 | Yes | Yes | |
istar9 | al_1202 | Yes | No | |
istar9 | al_1203 | Yes | No | |
istar9 | al_1307 | Yes | Yes | |
pig_n | al_1198 | Yes | No | |
pig_n | al_1199 | Yes | No | |
pig_n | al_1200 | Yes | No | |
pig_n | al_1201 | Yes | No | Originator reports instrument shows evidence of drifting over deployment. |
pig_n | al_1204 | Yes | No | |
pig_n | al_1205 | Yes | No | Instrument stopped logging prior to end of deployment. |
pig_n | al_1308 | Yes | Yes | |
pig_s | al_1193 | Yes | No | |
pig_s | al_1194 | Yes | No | |
pig_s | al_1196 | Yes | No | |
pig_s | al_1197 | Yes | No | |
pig_s | al_1305 | Yes | Yes | |
trough_e | al_1210 | Yes | No | |
trough_e | al_1211 | Yes | No | Instrument stopped logging prior to end of deployment. |
trough_e | al_1212 | Yes | No | |
trough_e | al_1310 | Yes | Yes | |
trough_w | al_1207 | Yes | No | |
trough_w | al_1208 | Yes | No | |
trough_w | al_1209 | Yes | No | |
trough_w | al_1309 | Yes | Yes |
Project Information
No Project Information held for the Series
Data Activity or Cruise Information
Data Activity
Start Date (yyyy-mm-dd) | 2012-03-06 |
End Date (yyyy-mm-dd) | 2014-03-02 |
Organization Undertaking Activity | British Antarctic Survey |
Country of Organization | United Kingdom |
Originator's Data Activity Identifier | iSTAR1 |
Platform Category | subsurface mooring |
iSTAR1 Mooring
iSTAR1 is a mooring array deployed for the iSTAR programme. The mooring was deployed from RV Araon in March 2012 and recovered from RRS James Clark Ross cruise JR20140126 in March 2014.
Deployment date (UTC) | 2012-03-06 16:00 |
---|---|
Recovery date (UTC) | 2014-03-02 13:09 |
Latitude (+ve North) | -71.5622 |
Longitude (+ve East) | -113.0460 |
Nominal water depth (m) | 605 |
Instrument setup
Instrument | Serial number | Nominal depth of instrument (m) | Comments |
---|---|---|---|
Aquatec Aqualogger 520PT Temperature/ Pressure Recorder | 1313 | 352 | |
Aquatec Aqualogger 520T Temperature Recorder | 360 | 381 | |
Aquatec Aqualogger 520T Temperature Recorder | 1218 | 411 | |
Aquatec Aqualogger 520T Temperature Recorder | 361 | 441 | |
Aquatec Aqualogger 520T Temperature Recorder | 1219 | 471 | |
75 kHz LR RDI ADCP | 15519 | 498 | |
SeaBird SBE-37 Microcat | 8530 | 501 | |
Aquatec Aqualogger 520T Temperature Recorder | 1220 | 527 | |
Aquatec Aqualogger 520T Temperature Recorder | 1221 | 557 | The originator has raised concerns about calibration of this instrument and an offset has been applied to the temperature data based on calibration CTD casts at deployment and recovery. |
Nortek Aquadopp | 9392 | 587 | |
SeaBird SBE-37 Microcat | 8531 | 588 |
Related Data Activity activities are detailed in Appendix 1
Fixed Station Information
Fixed Station Information
Station Name | iSTAR1 (trough_W) |
Category | Coastal location |
Latitude | 71° 33.43' S |
Longitude | 113° 2.76' W |
Water depth below MSL | 605.0 m |
iSTAR1 (trough_W)
Fixed station Area | Latitude, degrees (positive North) | Longitude, degrees (positive East) |
---|---|---|
North-West corner | -71.5572 | -113.046 |
South-East corner | -71.5622 | -113.032 |
Water depth = 605 m
Sampling history
Activity | Latitude | Longitude | Deployment date | Recovery date | Instruments | Deployment ship/ cruise | Recovery ship/ cruise | Comments |
---|---|---|---|---|---|---|---|---|
iSTAR1 Mooring | -71.5622 | -113.0460 | 2012-03-06 | 2014-03-02 | one Aquatec Aqualogger (temperature and pressure) six Aquatec Aqualoggers (temperature only) two SeaBird SBE-37 Microcats one 75 kHz RDI ADCP one Nortec Aqaudopp | RV Araon | RRS James Clark Ross JR20140126 | |
CTD Cast 97 | -71.5572 | -113.0323 | 2014-03-02 | N/A | SeaBird SBE 911plus CTD C-Star transmissometer Aquatracka Fluorometer SeaBird SBE-43 Oxygen sensor PAR sensor Altimeter PA200 | RRS James Clark Ross JR20140126 | N/A | |
CTD bottle samples | -71.5572 | -113.0323 | 2014-03-02 | N/A | Salinity | RRS James Clark Ross JR20140126 | N/A | |
LADCP Cast 97 | -71.5572 | -113.0323 | 2014-03-02 | N/A | RDI 300 kHz Workhorse LADCP attached to CTD frame | RRS James Clark Ross JR20140126 | N/A | |
trough_W mooring | -71.5621 | -113.0437 | 2014-03-02 | 2016-02-07 | one Aquatec Aqualogger (temperature and pressure) three Aquatec Aqualoggers (temperature only) two SeaBird SBE-37 Microcats one 75 kHz RDI ADCP one Nortec Aqaudopp | RRS James Clark Ross JR20140126 | RV Araon ANA06B |
Related Fixed Station activities are detailed in Appendix 2
BODC Quality Control Flags
The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:
Flag | Description |
---|---|
Blank | Unqualified |
< | Below detection limit |
> | In excess of quoted value |
A | Taxonomic flag for affinis (aff.) |
B | Beginning of CTD Down/Up Cast |
C | Taxonomic flag for confer (cf.) |
D | Thermometric depth |
E | End of CTD Down/Up Cast |
G | Non-taxonomic biological characteristic uncertainty |
H | Extrapolated value |
I | Taxonomic flag for single species (sp.) |
K | Improbable value - unknown quality control source |
L | Improbable value - originator's quality control |
M | Improbable value - BODC quality control |
N | Null value |
O | Improbable value - user quality control |
P | Trace/calm |
Q | Indeterminate |
R | Replacement value |
S | Estimated value |
T | Interpolated value |
U | Uncalibrated |
W | Control value |
X | Excessive difference |
SeaDataNet Quality Control Flags
The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:
Flag | Description |
---|---|
0 | no quality control |
1 | good value |
2 | probably good value |
3 | probably bad value |
4 | bad value |
5 | changed value |
6 | value below detection |
7 | value in excess |
8 | interpolated value |
9 | missing value |
A | value phenomenon uncertain |
B | nominal value |
Q | value below limit of quantification |
Appendix 1: iSTAR1
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 Identifier | Data Category | Start date/time | Start position | Cruise |
---|---|---|---|---|
1717059 | Hydrography time series at depth | 2012-03-06 16:04:59 | 71.5622 S, 113.04598 W | Not applicable |
1717060 | Hydrography time series at depth | 2012-03-06 16:05:00 | 71.5622 S, 113.04598 W | Not applicable |
1717115 | Hydrography time series at depth | 2012-03-06 16:09:45 | 71.5622 S, 113.04598 W | Not applicable |
1717103 | Hydrography time series at depth | 2012-03-06 16:09:57 | 71.5622 S, 113.04598 W | Not applicable |
1717139 | Hydrography time series at depth | 2012-03-06 16:10:13 | 71.5622 S, 113.04598 W | Not applicable |
1717084 | Hydrography time series at depth | 2012-03-06 16:10:14 | 71.5622 S, 113.04598 W | Not applicable |
1717127 | Hydrography time series at depth | 2012-03-06 16:10:23 | 71.5622 S, 113.04598 W | Not applicable |
1717096 | Hydrography time series at depth | 2012-03-06 16:14:43 | 71.5622 S, 113.04598 W | Not applicable |
1717477 | Currents -subsurface Eulerian | 2012-03-06 16:19:58 | 71.5622 S, 113.04598 W | Not applicable |
1748544 | Currents -subsurface Eulerian | 2012-03-06 17:00:00 | 71.5622 S, 113.04598 W | Not applicable |
1748556 | Currents -subsurface Eulerian | 2013-01-01 00:02:23 | 71.5622 S, 113.04598 W | Not applicable |
1748568 | Currents -subsurface Eulerian | 2014-01-01 00:05:18 | 71.5622 S, 113.04598 W | Not applicable |
Appendix 2: iSTAR1 (trough_W)
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 Identifier | Data Category | Start date/time | Start position | Cruise |
---|---|---|---|---|
1717059 | Hydrography time series at depth | 2012-03-06 16:04:59 | 71.5622 S, 113.04598 W | Not applicable |
1717060 | Hydrography time series at depth | 2012-03-06 16:05:00 | 71.5622 S, 113.04598 W | Not applicable |
1717115 | Hydrography time series at depth | 2012-03-06 16:09:45 | 71.5622 S, 113.04598 W | Not applicable |
1717103 | Hydrography time series at depth | 2012-03-06 16:09:57 | 71.5622 S, 113.04598 W | Not applicable |
1717139 | Hydrography time series at depth | 2012-03-06 16:10:13 | 71.5622 S, 113.04598 W | Not applicable |
1717084 | Hydrography time series at depth | 2012-03-06 16:10:14 | 71.5622 S, 113.04598 W | Not applicable |
1717127 | Hydrography time series at depth | 2012-03-06 16:10:23 | 71.5622 S, 113.04598 W | Not applicable |
1717096 | Hydrography time series at depth | 2012-03-06 16:14:43 | 71.5622 S, 113.04598 W | Not applicable |
1717477 | Currents -subsurface Eulerian | 2012-03-06 16:19:58 | 71.5622 S, 113.04598 W | Not applicable |
1748544 | Currents -subsurface Eulerian | 2012-03-06 17:00:00 | 71.5622 S, 113.04598 W | Not applicable |
1748556 | Currents -subsurface Eulerian | 2013-01-01 00:02:23 | 71.5622 S, 113.04598 W | Not applicable |
1748568 | Currents -subsurface Eulerian | 2014-01-01 00:05:18 | 71.5622 S, 113.04598 W | Not applicable |
1748894 | Hydrography time series at depth | 2014-03-02 16:49:59 | 71.56212 S, 113.04637 W | RRS James Clark Ross JR20140126 (JR294, JR295) |
1748697 | Currents -subsurface Eulerian | 2014-03-02 16:50:00 | 71.56212 S, 113.04637 W | RRS James Clark Ross JR20140126 (JR294, JR295) |
1748716 | Currents -subsurface Eulerian | 2014-03-02 16:50:00 | 71.56212 S, 113.04637 W | RRS James Clark Ross JR20140126 (JR294, JR295) |
1748870 | Hydrography time series at depth | 2014-03-02 16:50:00 | 71.56212 S, 113.04637 W | RRS James Clark Ross JR20140126 (JR294, JR295) |
1748882 | Hydrography time series at depth | 2014-03-02 16:50:00 | 71.56212 S, 113.04637 W | RRS James Clark Ross JR20140126 (JR294, JR295) |
1748950 | Hydrography time series at depth | 2014-03-02 16:50:00 | 71.56212 S, 113.04637 W | RRS James Clark Ross JR20140126 (JR294, JR295) |
1763909 | Hydrography time series at depth | 2014-03-02 16:50:01 | 71.56212 S, 113.04637 W | RRS James Clark Ross JR20140126 (JR294, JR295) |
1763910 | Hydrography time series at depth | 2014-03-02 16:50:01 | 71.56212 S, 113.04637 W | RRS James Clark Ross JR20140126 (JR294, JR295) |