Raw acoustic data collected by an EK80 echosounder at King George Island on board the RRS Sir David Attenborough cruise SD025 (25 February 2023)
GB/NERC/BAS/PDC/01861
Abstract:
Acoustic backscatter data were collected on board the RRS Sir David Attenborough during polar science trials 2023 (cruise SD025) on 25/02/2023 in Admiralty Bay, King George Island, Antarctica.
Data were collected using a Simrad EK80 echosounder at 18, 38, 70, 120, 200 and 333 kHz. The EK80 was calibrated on 10/03/2023 in the Weddell Sea.
This work was supported by NERC core funding to BAS.
Citation:
Fielding, S. (2024). Raw acoustic data collected by an EK80 echosounder at King George Island on board the RRS Sir David Attenborough cruise SD025 (25 February 2023) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/e7c3f05f-7677-408c-b98d-d35bd2171550
Access Data
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License
| Access: | None. |
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| Use: | This data is governed by the NERC data policy and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. |
Basic Information
| Creation Date: | 2024-07-03 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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Additional Information
| Reference: | Workman, E., Yang, M., Bell, T., Dong, Y., Jones, A., Fisher, R., France, J., Linse, K. (in review 2024). Methane Flux Measurements over Polar Oceans Indicate Emissions from Seabed to Atmosphere. J. Geophys. Res. Atmos. | |
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| Quality: | Raw data (time, gps and acoustic) are not quality checked. The instrument was calibrated on 10/03/2023 in the Weddell Sea. | |
| Lineage/Methodology: | The dataset comprises Simrad EK80 raw format data files that have not undergone any processing or quality checking. Each data file contains approximately 2 minutes of data and is approximately 518 MB in size. Each data file contains raw ping data with associated GPS fixes and date/time. In order to process the data, 3 files in the TOML syntax language are supplied: - transect file (defines the start and end times for a given transect, list the raw and environmental files making up the transect, and references to associated metadata and calibration files) - water column active acoustic metadata file (compliant with ICES. 2016, a metadata convention for processed acoustic data from active acoustic systems, SISP 4 TG-AcMeta Version 1.10, ICES WGFAST Topic Group, TG-AcMeta. 47 pp.) - calibration file (calibration data and metadata ((compliant with ICES. 2016, a metadata convention for processed acoustic data from active acoustic systems, SISP 4 TG-AcMeta Version 1.10, ICES WGFAST Topic Group, TG-AcMeta. 47 pp.) |
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Extent
| Temporal Coverage: | |
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| Start Date | 2023-02-25 |
| End Date | 2023-02-25 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -62.5 |
| Northernmost | -62.0609 |
| Longitude | |
| Westernmost | -58.4384 |
| Easternmost | -58.2 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Location: | |
| Location | Southern Ocean |
| Detailed Location | King George Island, Admiralty Bay |
Instrumentation
| Data Collection: | Data were collected using a Simrad EK80 echosounder at 18, 38, 70, 120, 200 and 333 kHz. |
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Storage
| Data Storage: | The dataset consists of raw Simrad EK80 echosounder data and 3 toml files with the total volume about 325.5 GB. |
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