Abstract:
Acoustic backscatter data were collected on board the RRS James Clark Ross (cruise JR161) as part of the Discovery 2010 programme.
Data were collected using a Simrad EK60 echo sounder at 38, 120 and 200 kHz. The EK60 was run continuously from Stanley (Falkland Islands) to Signy (South Orkney Islands), then to South Georgia across the Scotia Sea in the austral spring (October - December) of 2006. Dedicated acoustic transects were also run at eight stations within these transects. The EK60 was calibrated prior to data collection on a previous cruise (JR159 on 13-14th October 2006). More information about the calibration can be found in the Cruise Report for JR159: https://www.bodc.ac.uk/data/information_and_inventories/cruise_inventory/report/jr152_jr159.pdf
JR161 was the first of three cruises which comprise the field studies of the British Antarctic Survey's (BAS) core science Discovery 2010 programme, funded by the Natural Environment Research Council.
*******PLEASE BE ADVISED TO USE PROCESSED DATA*******
The JR161 EK60 processed data is now available at https://doi.org/10.5285/c831d5e4-8d03-4aea-a6c6-6db101f36d8d.
Keywords:
Scotia Sea, acoustic backscatter, echo-sounding
| Access Constraints: | Requests for data can be made via the UK Polar Data Centre (UK PDC) at BAS. |
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| Use Constraints: | NERC-funded data supplied under OGL v.3: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ |
| Creation Date: | 2015-04-24 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
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| Personnel: | |
| Name | Dr Sophie Fielding |
| Role(s) | Investigator, Technical Contact |
| Organisation | British Antarctic Survey |
| Name | Dr Peter Enderlein |
| Role(s) | Technical Contact |
| Organisation | British Antarctic Survey |
| Name | UK PDC |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Dr Martin Collins |
| Role(s) | Technical Contact |
| Organisation | British Antarctic Survey |
| Name | Dr Rachael Shreeve |
| Role(s) | Technical Contact |
| Organisation | British Antarctic Survey |
| Name | Ms Jenny Thomas |
| Role(s) | Technical Contact |
| Organisation | British Antarctic Survey |
| Parent Dataset: | N/A |
| Reference: | Fielding S, JL Watkins, MA Collins, P Enderlein, HJ Venables (2012) Acoustic determination of the distribution of fish and krill across the Scotia Sea in spring 2006, summer 2008 and autumn 2009. Deep-Sea Research II 59-60: 173-188 Atkinson, A., Schmidt, K., Fielding, S., Kawaguchi, S., Geissler, P., 2012. Variable food absorption by Antarctic krill: Relationships between diet, egestion rate and the composition and sinking rates of their fecal pellets. Deep Sea Research II, 59-60. 147-158. 10.1016/j.dsr2.2011.06.008 Collins, M.A., Stowasser, G., Fielding, S., Shreeve, R., Xavier, J.C., Venables, H., Enderlein, P., Cherel, Y., Van de Putte, A., 2012 Latitudinal and bathymetric patterns in the distribution and abundance of mesopelagic fish in the Scotia Sea. Deep Sea Research II, 59-60. 189-198. 10.1016/j.dsr2.2011.07.003 Schmidt K., Atkinson A., Venables, H.J., Pond, D.W., 2012. Early spanning of Antarctic krill in the Scotia Sea is fuelled by "superfluous" feeding in non-ice associated phytoplankton blooms. Deep-Sea Res II 59-60. 159-172. doi: 10.1016/j.dsr2.2011.05.002 Tarling G.A., Ward P., Atkinson A., Collins M.A., Murphy E.J. 2012b DISCOVERY 2010: Spatial and temporal variability in a dynamic polar ecosystem. Deep-Sea Research Part II-Topical Studies in Oceanography 59, 1-13. doi:10.1016/j.dsr2.2011.10.001 Ward, P., Atkinson, A., Venables, H., Tarling, G., Whitehouse, M., Fielding, S., Collins, M.A., Korb, R., Black, A., Stowasser, G., Schmidt, K., Thorpe, S., Enderlein, P., 2012 Food web structure and bioregions in the Scotia Sea: A seasonal synthesis. Deep Sea Research II, 59-60. 253-266. 10.1016/j.dsr2.2011.08.005 |
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| Lineage: | The dataset comprises Simrad raw format files that have not undergone any processing or quality checking. The raw data files (Simrad .raw format) are stored by the Polar Data Centre (PDC) at BAS. Each data file contains approximately 17 minutes of data and is approximately 26 MB in size. Each data file contains raw ping data with associated GPS fixes and date/time. | |
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| Temporal Coverage: | |
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| Start Date | 2006-10-23 |
| End Date | 2006-12-03 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -60.9875 |
| Northernmost | -57.829 |
| Longitude | |
| Westernmost | -49.7587 |
| Easternmost | -37.8862 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Location: | |
| Location | Southern Ocean |
| Detailed Location | Scotia Sea |
| Sensor(s): |
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| Data Collection: | Data collected using a Simrad EK60 echo sounder. |
| Distribution: | |
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| Distribution Media | Online Internet (HTTP) |
| Distribution Size | 83 GB |
| Distribution Format | N/A |
| Fees | N/A |