Metadata Report for BODC Series Reference Number 2052397
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
Data Description |
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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
Nortek Aquadopp Open Water Current Meter
This instrument provides 3D acoustic doppler current measurements along with standard measurements of temperature, pressure, tilt and direction. It can be used in real time measurement situations or can log to an internal recorder powered by internal batteries. It can also be configured to measure surface wave height, period and direction concurrently. It has the unique feature of being run in 'diagnostic' mode when set to collect data at 1 Hz frequency in user specified intervals. This allows studies of mooring motion and the performance of other current meters to be conducted. It can be set in various configurations with titanium housings for deployment at greater depths.
Standard Measured Parameters
- 3D current velocity (East/North/Up, X/Y/Z or Beam 1/2/3)
- Acoustic signal strength (Beam 1/2/3)
- Compass
- Tilt
- Temperature
- Pressure
- Battery voltage
- Status code
- Error code
Surface wave monitoring
The standard Aquadopp is suitable for measuring surface wave height, period, and direction, which are calculated using the PUV method whereby spectra are estimated based on a combination of the pressure signal recorded by the instrument (P) and two horizontal components of the wave orbital velocity (U and V). More specifically, the pressure signal is used to provide an estimate of the wave frequency spectrum. The energy in this spectrum is then used to estimate wave height and period. The measurements of the wave orbital velocities are used to provide an estimate of the wave direction. Since these estimates are based on the distribution of wave energy and are not direct measurements of the free surface, they should be considered inferred estimates.
Both the dynamic pressure and the orbital velocities are driven by surface waves. The signals that are associated with these properties are complicated by the fact that they attenuate (that is the signals are weaker) with depth. The exact behaviour of the attenuation is determined by the water depth and the wavelength being observed. The greater the water depth the greater the attenuation; likewise, the shorter the wavelength (or higher the frequency of the wave) the greater the attenuation for a given water depth. This means that the estimation of wave parameters is limited by both water depth and wave frequency.
Specifications
Water Velocity Measurement | |
---|---|
Range | ± 5 m/s (standard 300 m version) ± 3 m/s (3000 m and 6000 m versions - higher ranges available on request) |
Accuracy | 1% of measured value ± 0.5 cm/s |
Max. sampling rate | 1 Hz, 4 Hz also available on request (standard version) |
Internal sampling rate | 23 Hz |
Measurement Area | |
Measurement cell size | 0.75 m |
Measurement cell position | 0.35 - 5.0 m |
Default position | 0.35 - 1.8 m |
Doppler uncertainty (noise) | |
Typical | 0.5 - 1.0 cm/s |
At 1 Hz sampling rate | 1.5 cm/s |
Echo Intensity | |
Acoustic frequency | 2 MHz |
Resolution | 0.45 dB |
Dynamic range | 90 dB |
Sensors | |
Temperature | Thermistor embedded in head |
Range | -4°C to 40°C |
Accuracy/resolution | 0.1°C / 0.01°C |
Time response | 10 min |
Compass | Magnetometer |
Accuracy/Resolution | 2° / 0.1° for tilt < 20° |
Tilt | Liquid level |
Maximum tilt | 30° |
Up or down | Automatic detect |
Pressure | Piezoresistive |
Range | 0 - 300 m (standard), 0 - 3000 m or 0 - 6000 m |
Accuracy/resolution | 0.5% |
Analogue Inputs | |
No. of channels | 2 |
Voltage supply | 12 V |
Voltage input | 16 bit A/D |
Materials | |
Standard version | Delrin with titanium screws |
3000 m version | Delrin with titanium screws |
6000 m version | Titanium with Delrin transducer head |
Environmental | |
Operating temperature | -4°C to 40°C |
Dimensions | |
Cylinder | 568 mm x 75 mm (standard) 619 mm x 84 mm (3000 m version) 625 mm x 84 mm (6000 m version) |
Weight in air | 3.5 kg (standard) 3.6 kg (3000 m version) 7.6 kg (6000 m version) |
Weight in water | Neutral (standard) 1.2 kg (3000 m version) 4.8 kg (6000 m version) |
Further details can be found in the manufacturer's specification sheets for the Aquadopp, Aquadopp 3000 and Aquadopp 6000.
Processing by BODC of Moored Current Meters: AR30-04
The Nortek Aquadopp current meter data were supplied to BODC as ASCII files representing the data collected from Aquadopp sensors deployed at the EB1, WB1, and WB2 sites as well as the IB3, IB4, and IB5 sites during cruise AR30-04.
During transfer to BODC internal format (QXF) the originator's variables were mapped to unique BODC parameter codes. The following table shows the paramater mapping:
Originator's Variable | Originator's Units | BODC Parameter Code | BODC Units | Comment |
---|---|---|---|---|
YY | Year | AADYAA01 | days | Combined with MM and DD to form a date during transfer |
MM | Month | AADYAA01 | days | Combined with YY and DD to form a date during transfer |
DD | Day | AADYAA01 | days | Combined with YY and MM to form a date during transfer |
HH | Hour | AAFDZZ01 | days | Conversion of /24 automatically applied during transfer |
P | dbar | PREXPR01 | dbar | - |
T | °C | TEMPPR01 | °C | - |
U | cm/s | LCEWZZ01 | cm/s | - |
V | cm/s | LCNSZZ01 | cm/s | - |
W | cm/s | LRZAZZZZ | cm/s | - |
HDG | deg | HEADCM01 | deg | - |
PIT | deg | PTCHFG01 | deg | - |
ROL | deg | ROLLFG01 | deg | - |
IPOW | V | BTVOLTCM | V | - |
USS | counts | ISCMBMA1 | dimensionless | - |
VSS | counts | ISCMBMA2 | dimensionless | - |
WSS | counts | ISCMBMA3 | dimensionless | - |
CS | cm/s | LCSAZZ01 | cm/s | Channel not supplied for the IB moorings. |
CD | deg | LCDAZZ01 | deg | Channel not supplied for the IB moorings. |
Following transfer the data were screened using BODC in-house visualisation software. Suspect data values were assigned the appropriate BODC data quality flag. Missing data values, where present, were changed to the missing data value and assigned a BODC data quality flag.
Processing by originator of Moored Current Meters: AR30-04
Sampling Strategy
During the RV Neil Armstrong cruise AR30-04, 6 Nortek Aquadopps were deployed at the UK-OSNAP EB1 site, 5 at the WB1 site, and 3 at the WB2 site. Additionally, 3 Nortek Aquadopps were deployed at the IB3 site, 3 at the IB4 site, and 2 at the IB5 site. These moorings were recovered during the RRS Discovery cruise DY120.
Mooring site | Mooring location (latitude, longitude) | Water depth (m) | Deployment time (GMT) | Recovery time (GMT) |
---|---|---|---|---|
EB1 | 57.1005, -9.5683 | 1800 | 08/07/2018 17:00 | 12/10/2020 10:30 |
WB1 | 57.4693, -12.7057 | 1600 | 06/07/2018 17:00 | 14/10/2020 07:00 |
WB2 | 57.4717, -12.3117 | 1600 | 09/07/2018 22:30 | 14/10/2020 07:00 |
IB3 | 57.9901, -24.3533 | 2850 | 03/07/2018 18:00 | 19/10/2020 12:30 |
IB4 | 57.9898, -21.1462 | 2919 | 04/07/2018 17:00 | 17/10/2020 11:00 |
IB5 | 57.801, -19.1707 | 900 | 05/07/2018 12:00 | 16/10/2020 07:00 |
Data Acquisition and Initial Processing
The data were downloaded from the instruments with metadata recorded, and were corrected for water depth and the magnetic declination. The data were then converted to RODB format and merged with the metadata file, and the launch and recovery periods removed from the data.
The processed data were supplied to BODC for banking.
Project Information
UK - Overturning in the Subpolar North Atlantic Programme (UK-OSNAP) Programme
UK-OSNAP is part of an international collaboration to establish a transoceanic observing system in the subpolar North Atlantic. The aim is to quantify and understand the Subpolar Gyre's response to local and remote forcing of mass, heat and freshwater fluxes, within the conceptual framework of the Atlantic Meridional Overturning Circulation (AMOC).
UK-OSNAP is developing a new observing system to provide a continuous record of full-depth, trans-basin mass, heat, and freshwater fluxes. Combining these sustained measurements with innovative modelling techniques will enable the project to characterise the circulation and fluxes of the North Atlantic Subpolar Gyre.
UK-OSNAP is funded by the Natural Environment Research Council (NERC). The project is led by the National Oceanography Centre (NOC) with partners in the University of Liverpool, the University of Oxford and the Scottish Association for Marine Science (SAMS). It is a part of international OSNAP that is led by USA and includes 10 further partner groups in Canada, France, Germany, the Netherlands and China. The project involves fieldwork at sea and model studies.
The OSNAP observing system consists of two legs: one extending from southern Labrador to the southwestern tip of Greenland across the mouth of the Labrador Sea (OSNAP West), and the second from the southeastern tip of Greenland to Scotland (OSNAP East). The observing system also includes subsurface floats (OSNAP Floats) in order to trace the pathways of overflow waters in the basin and to assess the connectivity of currents crossing the OSNAP line.
NERC have added an extension to UK-OSNAP, until October 2024. This will result in the UK-OSNAP-Decade: 10 years of observing and understanding the overturning circulation in the subpolar North Atlantic (2014-2024).
Data Activity or Cruise Information
Data Activity
Start Date (yyyy-mm-dd) | 2018-07-04 |
End Date (yyyy-mm-dd) | 2020-10-17 |
Organization Undertaking Activity | National Oceanography Centre, Southampton |
Country of Organization | United Kingdom |
Originator's Data Activity Identifier | IB4_07_2018 |
Platform Category | subsurface mooring |
Ellett Array Moored Instruments IB4 2018-2020
This rig was deployed as part of the Iceland Basin Array.
Deployment Cruise | RV Neil Armstrong 30-04 |
---|---|
Recovery Cruise | RRS Discovery DY120 |
The rig was held down by a 1900 kilogram anchor on the seabed at 2919 metres depth. It was kept erect by 44" syntactic float at 75 metres depth and 2 glass spheres at 45 metres depth.
The instruments deployed on the rig were as follows:
Approximate Depth(m) | Instrument | Serial Number |
---|---|---|
47 | SBE37 SMP MicroCAT | 9373 |
75 | RDI WorkHorse 300kHz ADCP - Up | 20962 |
75 | RDI WorkHorse 300kHz ADCP - Down | 20958 |
103 | SBE37 SMP MicroCAT | 14366 |
199 | SBE37 SMP MicroCAT | 11332 |
348 | SBE37 SMP MicroCAT | 9371 |
498 | SBE37 SMP MicroCAT | 11326 |
698 | SBE37 SMP MicroCAT | 8077 |
901 | SBE37 SMP MicroCAT | 8079 |
1199 | SBE37 SMP MicroCAT | 11331 |
1469 | Nortek Aquadopp | 8120 |
1502 | SBE37 SMP MicroCAT | 8078 |
1902 | SBE37 SMP MicroCAT | 9374 |
2297 | Nortek Aquadopp | 11051 |
2302 | SBE37 SMP MicroCAT | 11323 |
2796 | Nortek Aquadopp | 13142 |
2802 | SBE37 SMP MicroCAT | 11328 |
There were no issues with any of the sensors reported.
Related Data Activity activities are detailed in Appendix 1
Cruise
Cruise Name | AR30-04 (F2018-007, OSNAP East 2018) |
Departure Date | 2018-07-01 |
Arrival Date | 2018-07-29 |
Principal Scientist(s) | William E Johns (Rosenstiel School of Marine and Atmospheric Science) |
Ship | RV Neil Armstrong |
Complete Cruise Metadata Report is available here
Fixed Station Information
Fixed Station Information
Station Name | Extended Ellett Line Station IB4 |
Category | Offshore location |
Latitude | 58° 30.00' N |
Longitude | 16° 0.00' W |
Water depth below MSL | 1210.0 m |
Extended Ellett Line: Fixed Station IB4
Station IB4 is one of the 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.
From 2018 this mooring contributed to the UK-OSNAP project. It was referred to as the OSNAP Iceland Basin Array.
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: IB4_07_2018
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 |
---|---|---|---|---|
2052373 | Currents -subsurface Eulerian | 2018-07-04 17:00:00 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052385 | Currents -subsurface Eulerian | 2018-07-04 17:00:00 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052569 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052570 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052582 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052594 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052601 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052613 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052625 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052637 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052649 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052650 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052662 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052674 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
Appendix 2: Extended Ellett Line Station IB4
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 |
---|---|---|---|---|
1007936 | CTD or STD cast | 1997-09-12 10:45:00 | 58.5585 N, 16.17267 W | RRS Discovery D230 |
2131505 | Water sample data | 1997-09-12 11:23:30 | 58.55852 N, 16.17261 W | RRS Discovery D230 |
1304929 | Water sample data | 1997-09-12 11:24:00 | 58.55852 N, 16.17261 W | RRS Discovery D230 |
1020557 | CTD or STD cast | 1998-05-24 23:59:00 | 58.5005 N, 16.08733 W | RRS Discovery D233 |
1306198 | Water sample data | 1998-05-25 00:38:00 | 58.50042 N, 16.08728 W | RRS Discovery D233 |
1849352 | Water sample data | 1998-05-25 00:38:00 | 58.50042 N, 16.08728 W | RRS Discovery D233 |
1070867 | CTD or STD cast | 1999-09-14 16:21:00 | 58.55683 N, 16.16683 W | RRS Discovery D242 |
1252212 | Water sample data | 1999-09-14 16:39:00 | 58.55683 N, 16.16683 W | RRS Discovery D242 |
670502 | CTD or STD cast | 2001-05-08 01:02:00 | 58.51067 N, 16.0005 W | RRS Discovery D253 |
667291 | CTD or STD cast | 2004-07-16 00:10:00 | 58.5075 N, 15.9995 W | FS Poseidon PO314 |
776431 | CTD or STD cast | 2006-10-20 18:54:18 | 58.50933 N, 16.29667 W | RRS Discovery D312 |
847347 | CTD or STD cast | 2007-08-28 01:04:10 | 58.49695 N, 16.00621 W | RRS Discovery D321B |
954136 | CTD or STD cast | 2009-06-15 17:05:12 | 58.50052 N, 16.00057 W | RRS Discovery D340A |
1052615 | CTD or STD cast | 2010-05-18 04:26:56 | 58.49917 N, 15.978 W | RRS Discovery D351 |
1896639 | Water sample data | 2010-05-18 05:10:00 | 58.50004 N, 15.97696 W | RRS Discovery D351 |
1195628 | CTD or STD cast | 2011-05-29 09:01:46 | 58.49867 N, 15.9995 W | RRS Discovery D365 |
1204013 | CTD or STD cast | 2012-08-10 12:43:00 | 58.49978 N, 15.999 W | RRS Discovery D379 |
1220258 | CTD or STD cast | 2013-05-17 17:05:57 | 58.5 N, 16.0 W | RRS James Cook JC086 |
2098230 | Water sample data | 2013-05-17 17:46:30 | 58.50611 N, 16.2375 W | RRS James Cook JC086 |
2098696 | Water sample data | 2013-05-17 17:46:30 | 58.50611 N, 16.2375 W | RRS James Cook JC086 |
2099221 | Water sample data | 2013-05-17 17:46:30 | 58.50611 N, 16.2375 W | RRS James Cook JC086 |
2099792 | Water sample data | 2013-05-17 17:46:30 | 58.50611 N, 16.2375 W | RRS James Cook JC086 |
2100346 | Water sample data | 2013-05-17 17:46:30 | 58.50611 N, 16.2375 W | RRS James Cook JC086 |
2101337 | Water sample data | 2013-05-17 17:46:30 | 58.50611 N, 16.2375 W | RRS James Cook JC086 |
1370717 | CTD or STD cast | 2014-07-09 03:01:57 | 58.47 N, 16.0 W | RRS James Clark Ross JR20140531 (JR302) |
1723028 | CTD or STD cast | 2015-06-07 22:24:02 | 58.5007 N, 15.9996 W | RRS Discovery DY031 |
1722105 | Currents -subsurface Eulerian | 2015-06-07 22:24:36 | 58.50072 N, 15.9996 W | RRS Discovery DY031 |
2150066 | Water sample data | 2015-06-07 23:03:30 | 58.50072 N, 15.9996 W | RRS Discovery DY031 |
1878958 | Water sample data | 2015-06-07 23:04:00 | 58.50072 N, 15.9996 W | RRS Discovery DY031 |
1764403 | CTD or STD cast | 2016-06-14 20:42:15 | 58.4997 N, 16.0029 W | RRS Discovery DY052 |
1765547 | Currents -subsurface Eulerian | 2016-06-14 20:42:33 | 58.49968 N, 16.0029 W | RRS Discovery DY052 |
1874724 | Water sample data | 2016-06-14 21:17:00 | 58.49968 N, 16.0029 W | RRS Discovery DY052 |
2149250 | Water sample data | 2016-06-14 21:17:08 | 58.49968 N, 16.0029 W | RRS Discovery DY052 |
2052373 | Currents -subsurface Eulerian | 2018-07-04 17:00:00 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052385 | Currents -subsurface Eulerian | 2018-07-04 17:00:00 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052569 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052570 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052582 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052594 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052601 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052613 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052625 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052637 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052649 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052650 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052662 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |
2052674 | Hydrography time series at depth | 2018-07-04 17:00:01 | 57.98983 N, 21.1462 W | RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) |