BGS Hosted Metadata
Raw acoustic data collected by an EK80 echo sounder in Stromness Bay, South Georgia during the cruise DY158 on 5 January 2023
Acoustic backscatter data were collected on board the RRS Discovery during cruise DY158 on 05/01/2023 in Stromness Bay, South Georgia. Data were collected using a Simrad EK80 echosounder at 18, 38, 120, 200 and 333 kHz.
Funding source: This work was carried out in the frame of WCB-POETS survey cruises, and the methane survey was funded by the Collaborative Antarctic Science Scheme (CASS).
Simple
- Date (Creation)
- 2024-11-19
- Date (Revision)
- 2024-11-19
- Date (Publication)
- 2024-11-19
- Date (released)
- 2024-11-19
- Edition
-
1.0
- Unique resource identifier
- https://doi.org/10.5285/b00474cf-1a78-4775-8ec9-343cf1e62fb4
- Codespace
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doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01945
- Codespace
- Other citation details
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Please cite this item as: Workman, E., Dornan, T., & Saunders, R. (2024). Raw acoustic data collected by an EK80 echo sounder in Stromness Bay, South Georgia during the cruise DY158 on 5 January 2023 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/b00474cf-1a78-4775-8ec9-343cf1e62fb4
- Credit
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No credit.
- Status
- Completed
- Point of contact
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Organisation name Individual name Electronic mail address Role British Antarctic Survey Workman, Evelyn Author British Antarctic Survey Dornan, Tracey Author British Antarctic Survey Saunders, Ryan Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Theme
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EK80
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South Georgia
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acoustic backscatter
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echosounder
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methane flare
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- Place
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Stromness Bay South Georgia Island
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GEMET - INSPIRE themes, version 1.0
- Access constraints
- Other restrictions
- Other constraints
- no limitations to public access
- Access constraints
- Other restrictions
- Other constraints
- no limitations
- Use constraints
- License
- Other constraints
- Open Government Licence v3.0
- Use constraints
- Other restrictions
- Other constraints
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This data is governed by the NERC data policy and supplied under Open Government Licence v.3
- Use constraints
- Other restrictions
- Other constraints
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No restrictions apply.
- Unique resource identifier
- url
- Codespace
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url
- Association Type
- Cross reference
- Unique resource identifier
- url
- Codespace
-
url
- Association Type
- Cross reference
- Unique resource identifier
- doi
- Codespace
-
doi
- Association Type
- Cross reference
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
-
- Geoscientific information
- Oceans
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- Begin date
- 2023-01-05
- End date
- 2023-01-05
- Supplemental Information
-
It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.
- Title
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European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
- Date (Publication)
- 2008-11-12
- Cited responsible party
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Organisation name Individual name Electronic mail address Role European Petroleum Survey Group
Publisher
- Unique resource identifier
- urn:ogc:def:crs:EPSG::3031
- Version
-
6.18.3
Distributor
- Distributor contact
-
Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Distributor
- Distributor format
-
Name Version text/plain application/octet-stream
- Units of distribution
-
bytes
- Transfer size
- 31138512896
- OnLine resource
-
Protocol Linkage Name WWW:LINK-1.0-http--link
http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=b00474cf-1a78-4775-8ec9-343cf1e62fb4 Get Data
- Units of distribution
-
bytes
- Transfer size
- 31138512896
- OnLine resource
-
Protocol Linkage Name WWW:LINK-1.0-http--link
http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=b00474cf-1a78-4775-8ec9-343cf1e62fb4 Get Data
- Hierarchy level
- Dataset
- Statement
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Methodology:
Data were collected using a Simrad EK80 echosounder at 18, 38, 120, 200 and 333 kHz. The EK80 was calibrated on 04/01/2023 in Rosita Harbour, South Georgia. Standard calibration procedures were used and all frequencies, except the 333 kHz, were calibrated using a 38.1 mm tungsten carbide sphere. The 333 kHz was not calibrated, as previous attempts using a 20 mm sphere were unsuccessful due to the depths the sphere is at on Discovery versus the usable range. All calibrations were successful and uploaded to the transducers on completion with the exception of the 200 kHz transducer which had an RMS (root mean square) of 0.4, and the 333 kHz transducer which remains uncalibrated. The 200 kHz was reprocessed with a 1dB target window on target strength, resulting in an RMS of 0.2, which was accepted and uploaded to the system on 7/1/2023 12:21:25. More information about the calibration can be found in the Cruise Report for DY158: https://www.bodc.ac.uk/resources/inventories/cruise_inventory/reports/dy158.pdf.
The dataset comprises Simrad raw format files that have not undergone any processing or quality checking. The raw data files are stored by the Polar Data Centre (PDC) at BAS. Each .raw data file contains approximately 5 minutes of data and is approximately 100 MB in size. Each data file contains raw ping data with associated GPS fixes and date/time.
Data collection:
Data were collected using a Simrad EK80 echosounder at 18, 38, 120, 200 and 333 kHz.
Data quality:
Raw data (time, gps and acoustic) are not quality checked. The instrument was calibrated on 04/01/2023 in Rosita Harbour, South Georgia.
Metadata
- File identifier
- b00474cf-1a78-4775-8ec9-343cf1e62fb4 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
-
dataset
- Date stamp
- 2024-11-19
- Metadata standard name
-
ISO 19115 Geographic Information - Metadata
- Metadata standard version
-
ISO 19115:2003(E)
- Metadata author
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Point of contact
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