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Density Estimation of Antarctic Krill in the South Shetland Island (Subarea 48.1) Using dB-Difference Method

Seok-Gwan Choi / Jinho Chae / Sangdeuk Chung / Wooseok Oh / Euna Yoon / Gunhee Sung / Kyounghoon Lee

This study is aimed to estimate the density of Antarctic krill that inhabit in the area around South Shetland Island by using a dB-difference method. An acoustic survey was conducted from 13 to 24 April in 2016 in the sea of South Shetland. Acoustic data on frequency 38 and 120 kHz were collected. The Antarctic krill echo was extracted for the S_{V120-38 kHz} range of 0.4–14.3 dB, which was obtained by applying the size of the collected Antarctic krill in this study (25–60 mm). The mean Antarctic krill density across the survey area was 33.65 g m⁻² (CV = 45.97%).

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Density Estimation of Antarctic Krill in the South Shetland Island (Subarea 48.1) Using dB-Difference Method

Seok-Gwan Choi / Jinho Chae / Sangdeuk Chung / Wooseok Oh / Euna Yoon / Gunhee Sung / Kyounghoon Lee

This study is aimed to estimate the density of Antarctic krill that inhabit in the area around South Shetland Island by using a dB-difference method. An acoustic survey was conducted from 13 to 24 April in 2016 in the sea of South Shetland. Acoustic data on frequency 38 and 120 kHz were collected. The Antarctic krill echo was extracted for the S_{V120-38 kHz} range of 0.4–14.3 dB, which was obtained by applying the size of the collected Antarctic krill in this study (25–60 mm). The mean Antarctic krill density across the survey area was 33.65 g m⁻² (CV = 45.97%).

Density Estimation of Antarctic Krill in the South Shetland Island (Subarea 48.1) Using dB-Difference Method

Seok-Gwan Choi / Jinho Chae / Sangdeuk Chung / Wooseok Oh / Euna Yoon / Gunhee Sung / Kyounghoon Lee

This study is aimed to estimate the density of Antarctic krill that inhabit in the area around South Shetland Island by using a dB-difference method. An acoustic survey was conducted from 13 to 24 April in 2016 in the sea of South Shetland. Acoustic data on frequency 38 and 120 kHz were collected. The Antarctic krill echo was extracted for the S_{V120-38 kHz} range of 0.4–14.3 dB, which was obtained by applying the size of the collected Antarctic krill in this study (25–60 mm). The mean Antarctic krill density across the survey area was 33.65 g m⁻² (CV = 45.97%).

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Titel:

Density Estimation of Antarctic Krill in the South Shetland Island (Subarea 48.1) Using dB-Difference Method

Beteiligte:

Seok-Gwan Choi (Autor:in) / Jinho Chae (Autor:in) / Sangdeuk Chung (Autor:in) / Wooseok Oh (Autor:in) / Euna Yoon (Autor:in) / Gunhee Sung (Autor:in) / Kyounghoon Lee (Autor:in)

Erschienen in:

Sustainability, Vol 12, Iss 14, p 5701 (2020)

Erscheinungsdatum:

2020

ISSN:

DOI:

https://doi.org/10.3390/su12145701

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Unbekannt

Schlagwörter:

Antarctic krill , acoustic survey , scientific echosounder , dB difference , biomass , Environmental effects of industries and plants , TD194-195 , Renewable energy sources , TJ807-830 , Environmental sciences , GE1-350

Metadata by DOAJ is licensed under CC BY-SA 1.0

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