CE20012 Celtic Explorer Celtic Sea Herring Acoustic Survey 2020

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In the southwest of Ireland and the Celtic Sea (ICES divisions: 7j-g and 7aS), herring are an important commercial species to the pelagic and polyvalent fleet. Acoustic surveys are currently are the only tuning indices available for this stock. Since 2004 the survey has been fixed in October and carried out on-board the RV Celtic Explorer. During this 18 day survey (4th - 22nd October) was led by the Marine Institute and took place in the Celtic Sea where acoustic data were collected using the Simrad EK60 scientific echosounder. Biological sampling was carried out at 17 stations using a pelagic midwater trawl with all components of the catch from the trawl hauls sorted and weighed; fish and other taxa were identified to species level. Hydrographic data on temperature, depth and salinity (CTD) were collected using a calibrated Seabird 911 sampler. In addition, 23 grab samples were obtained and marine mammal and seabird surveys conducted. 30 hours of the survey were lost due to poor weather conditions. The aim of the acoustic survey is to determine the relative abundance of the target species, herring. This information is then used to determine catch rates and management advice for the following year.

Data Resources (5)

available as HTML
Marine Institute home page
Marine Institute home page
DAFM | Marine Agencies & Programmes Division
Theme Environment
Date released 2020-10-27
Date updated 2022-11-11
Dataset conforms to these standards See the referenced specification
Rights notes {"While every effort is made in preparing the dataset no responsibility is accepted by or on behalf of the Marine Institute for any errors, omissions or misleading information. The Marine Institute accepts no responsibility for loss or damage occasioned or claimed to have been occasioned, in part or in full, as a consequence of any person acting, or refraining from acting as a result of a matter contained in this datasets or as a consequence of using this dataset for any purpose whatsoever."}
Update frequency Other
Language English
Geographic coverage in GeoJSON format {"type":"Polygon","coordinates":[[[-25.000816176, 46.83333347],[-25.000816176, 57.366661531], [-5.27233311, 57.366661531], [-5.27233311, 46.83333347], [-25.000816176, 46.83333347]]]}
Spatial Reference Systems (SRS) WGS 84 (EPSG:3857)
Provenance information Data supplied by Marine Institute.
Period of time covered (begin) 2020-10-04
Period of time covered (end) 2020-10-22

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