Fish and krill schools and regions detected from acoustic backscatter along the slope of the Central Beaufort Shelf, Aug-Sept. 2018
he goal of this study is to reveal the spatial variation of biological backscatter and the distributions of fish (assumed Arctic cod) and zooplankton (assumed euphausiids/krill or large copepods) in a region of the Beaufort Shelf known for intense upwelling. Data were collected during two cruises to...
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2023
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dataone:doi:10.18739/A2T14TQ95 2023-11-08T14:14:15+01:00 Fish and krill schools and regions detected from acoustic backscatter along the slope of the Central Beaufort Shelf, Aug-Sept. 2018 Carin Ashjian Michael Jech Jennifer Johnson Central Beaufort Sea shelf, shelf-break, and slope ENVELOPE(-152.79886,-149.99756,71.53764,71.147064) BEGINDATE: 2018-08-03T00:00:00Z ENDDATE: 2018-08-27T00:00:00Z 2023-01-01T00:00:00Z https://doi.org/10.18739/A2T14TQ95 unknown Arctic Data Center acoustic backscatter krill fish Dataset 2023 dataone:urn:node:ARCTIC https://doi.org/10.18739/A2T14TQ95 2023-11-08T13:48:26Z he goal of this study is to reveal the spatial variation of biological backscatter and the distributions of fish (assumed Arctic cod) and zooplankton (assumed euphausiids/krill or large copepods) in a region of the Beaufort Shelf known for intense upwelling. Data were collected during two cruises to the Central Beaufort Sea Shelf in 2017 (Aug. 25 – Sept. 19) and in 2018 (Aug. 3 – 27) using the Simrad EK80 bioacoustics sonar suite located on the centerboard of the Research Vessel (R/V) Sikuliaq. Fish (assumed Arctic cod or Boreogadus saida) schools and regions (portions of the water column with contiguous presence of fish) were identified using the 38 kilohertz (kHz) data while krill (euphausiid) schools and regions were identified using the 120 kHz data. All processing and analyses were conducted in Echoview. This dataset contains preliminary data from 2018; problems with calibration are delaying final data sets. Dataset Arctic cod Arctic Beaufort Sea Boreogadus saida Zooplankton Copepods Arctic Data Center (via DataONE) Arctic Beaufort Shelf ENVELOPE(-142.500,-142.500,70.000,70.000) ENVELOPE(-152.79886,-149.99756,71.53764,71.147064) |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
acoustic backscatter krill fish |
spellingShingle |
acoustic backscatter krill fish Carin Ashjian Michael Jech Jennifer Johnson Fish and krill schools and regions detected from acoustic backscatter along the slope of the Central Beaufort Shelf, Aug-Sept. 2018 |
topic_facet |
acoustic backscatter krill fish |
description |
he goal of this study is to reveal the spatial variation of biological backscatter and the distributions of fish (assumed Arctic cod) and zooplankton (assumed euphausiids/krill or large copepods) in a region of the Beaufort Shelf known for intense upwelling. Data were collected during two cruises to the Central Beaufort Sea Shelf in 2017 (Aug. 25 – Sept. 19) and in 2018 (Aug. 3 – 27) using the Simrad EK80 bioacoustics sonar suite located on the centerboard of the Research Vessel (R/V) Sikuliaq. Fish (assumed Arctic cod or Boreogadus saida) schools and regions (portions of the water column with contiguous presence of fish) were identified using the 38 kilohertz (kHz) data while krill (euphausiid) schools and regions were identified using the 120 kHz data. All processing and analyses were conducted in Echoview. This dataset contains preliminary data from 2018; problems with calibration are delaying final data sets. |
format |
Dataset |
author |
Carin Ashjian Michael Jech Jennifer Johnson |
author_facet |
Carin Ashjian Michael Jech Jennifer Johnson |
author_sort |
Carin Ashjian |
title |
Fish and krill schools and regions detected from acoustic backscatter along the slope of the Central Beaufort Shelf, Aug-Sept. 2018 |
title_short |
Fish and krill schools and regions detected from acoustic backscatter along the slope of the Central Beaufort Shelf, Aug-Sept. 2018 |
title_full |
Fish and krill schools and regions detected from acoustic backscatter along the slope of the Central Beaufort Shelf, Aug-Sept. 2018 |
title_fullStr |
Fish and krill schools and regions detected from acoustic backscatter along the slope of the Central Beaufort Shelf, Aug-Sept. 2018 |
title_full_unstemmed |
Fish and krill schools and regions detected from acoustic backscatter along the slope of the Central Beaufort Shelf, Aug-Sept. 2018 |
title_sort |
fish and krill schools and regions detected from acoustic backscatter along the slope of the central beaufort shelf, aug-sept. 2018 |
publisher |
Arctic Data Center |
publishDate |
2023 |
url |
https://doi.org/10.18739/A2T14TQ95 |
op_coverage |
Central Beaufort Sea shelf, shelf-break, and slope ENVELOPE(-152.79886,-149.99756,71.53764,71.147064) BEGINDATE: 2018-08-03T00:00:00Z ENDDATE: 2018-08-27T00:00:00Z |
long_lat |
ENVELOPE(-142.500,-142.500,70.000,70.000) ENVELOPE(-152.79886,-149.99756,71.53764,71.147064) |
geographic |
Arctic Beaufort Shelf |
geographic_facet |
Arctic Beaufort Shelf |
genre |
Arctic cod Arctic Beaufort Sea Boreogadus saida Zooplankton Copepods |
genre_facet |
Arctic cod Arctic Beaufort Sea Boreogadus saida Zooplankton Copepods |
op_doi |
https://doi.org/10.18739/A2T14TQ95 |
_version_ |
1782012321080541184 |