Performance evaluation of a combined ADCP- scientific echosounder system.
International audience Echosounders are widely used to quantify fish behavior, fish stocks, and zooplankton biomass. Acoustic Doppler Current Profilers have also been used to accurately measure currents in all of the world’s major water bodies over the last 30 years. The present work evaluates the p...
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ftunivaixmarseil:oai:HAL:hal-03428126v1 2023-12-31T10:01:23+01:00 Performance evaluation of a combined ADCP- scientific echosounder system. Velasco, David Hutton, Briony Lefèvre, Dominique Zakardjian, Bruno Gojak, Carl Mahiouz, Karim Heyndrickx, Celine Nylund, Sven Bezile, Antoine Nortekmed S.A.S. AUTRES Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) Division technique INSU/SDU (DTI) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) San Diego, United States 2021-09-20 https://hal.science/hal-03428126 https://hal.science/hal-03428126/document https://hal.science/hal-03428126/file/Oceans2021Sig100-Final.pdf en eng HAL CCSD hal-03428126 https://hal.science/hal-03428126 https://hal.science/hal-03428126/document https://hal.science/hal-03428126/file/Oceans2021Sig100-Final.pdf info:eu-repo/semantics/OpenAccess OCEANS 2021 San Diego – PortoAt: San Diego, CA, USA https://hal.science/hal-03428126 OCEANS 2021 San Diego – PortoAt: San Diego, CA, USA, Sep 2021, San Diego, United States scientific echosounding ADCP currents biomass [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/conferenceObject Conference papers 2021 ftunivaixmarseil 2023-12-05T23:38:32Z International audience Echosounders are widely used to quantify fish behavior, fish stocks, and zooplankton biomass. Acoustic Doppler Current Profilers have also been used to accurately measure currents in all of the world’s major water bodies over the last 30 years. The present work evaluates the performance of a combined echosounder/ADCP system, the Nortek Signature100, for simultaneous biomass assessment and current profile data analysis. Due to its combined current profiling and scientific echosounding capabilities, the system is seeing increased usage in biomass flux applications, particularly in Antarctic krill research. However, capabilities of the system are still being studied and the present work aims to expand characterization of its performance. To that effect, a four month deployment was carried out by the French National Center for Scientific Research (CNRS) in the Mediterranean Sea with an up-looking Signature100 mounted atop the ALBATROSS mooring line. The line was at a total water depth of 2420 m and its top was approximately 370 m below the surface. Data show significant variations in scattering conditions between daytime and nighttime due to diel vertical migration (DVM), often unrelated to horizontal velocity fluctuations, highlighting not only the multiple frequency band capabilities of the system (up to 7 bands), but also the strength of the combined echosounder and current profiling functions. Echoview, a commercial software package for hydroacoustic data processing, was used to further explore the spatial and temporal patterns of the organisms observed in the echosounder data. A semi-automated technique was implemented to efficiently and objectively clean (e.g. remove interference generated by passing ship traffic), classify (e.g. based on relative frequency response or morphology), and characterize the narrow bandwidth and pulse compressed echosounder data by generating outputs that can contribute to the management and monitoring of aquatic resources. Conference Object Antarc* Antarctic Antarctic Krill Aix-Marseille Université: HAL |
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Open Polar |
collection |
Aix-Marseille Université: HAL |
op_collection_id |
ftunivaixmarseil |
language |
English |
topic |
scientific echosounding ADCP currents biomass [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
scientific echosounding ADCP currents biomass [SDE.MCG]Environmental Sciences/Global Changes Velasco, David Hutton, Briony Lefèvre, Dominique Zakardjian, Bruno Gojak, Carl Mahiouz, Karim Heyndrickx, Celine Nylund, Sven Bezile, Antoine Performance evaluation of a combined ADCP- scientific echosounder system. |
topic_facet |
scientific echosounding ADCP currents biomass [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience Echosounders are widely used to quantify fish behavior, fish stocks, and zooplankton biomass. Acoustic Doppler Current Profilers have also been used to accurately measure currents in all of the world’s major water bodies over the last 30 years. The present work evaluates the performance of a combined echosounder/ADCP system, the Nortek Signature100, for simultaneous biomass assessment and current profile data analysis. Due to its combined current profiling and scientific echosounding capabilities, the system is seeing increased usage in biomass flux applications, particularly in Antarctic krill research. However, capabilities of the system are still being studied and the present work aims to expand characterization of its performance. To that effect, a four month deployment was carried out by the French National Center for Scientific Research (CNRS) in the Mediterranean Sea with an up-looking Signature100 mounted atop the ALBATROSS mooring line. The line was at a total water depth of 2420 m and its top was approximately 370 m below the surface. Data show significant variations in scattering conditions between daytime and nighttime due to diel vertical migration (DVM), often unrelated to horizontal velocity fluctuations, highlighting not only the multiple frequency band capabilities of the system (up to 7 bands), but also the strength of the combined echosounder and current profiling functions. Echoview, a commercial software package for hydroacoustic data processing, was used to further explore the spatial and temporal patterns of the organisms observed in the echosounder data. A semi-automated technique was implemented to efficiently and objectively clean (e.g. remove interference generated by passing ship traffic), classify (e.g. based on relative frequency response or morphology), and characterize the narrow bandwidth and pulse compressed echosounder data by generating outputs that can contribute to the management and monitoring of aquatic resources. |
author2 |
Nortekmed S.A.S. AUTRES Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) Division technique INSU/SDU (DTI) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Conference Object |
author |
Velasco, David Hutton, Briony Lefèvre, Dominique Zakardjian, Bruno Gojak, Carl Mahiouz, Karim Heyndrickx, Celine Nylund, Sven Bezile, Antoine |
author_facet |
Velasco, David Hutton, Briony Lefèvre, Dominique Zakardjian, Bruno Gojak, Carl Mahiouz, Karim Heyndrickx, Celine Nylund, Sven Bezile, Antoine |
author_sort |
Velasco, David |
title |
Performance evaluation of a combined ADCP- scientific echosounder system. |
title_short |
Performance evaluation of a combined ADCP- scientific echosounder system. |
title_full |
Performance evaluation of a combined ADCP- scientific echosounder system. |
title_fullStr |
Performance evaluation of a combined ADCP- scientific echosounder system. |
title_full_unstemmed |
Performance evaluation of a combined ADCP- scientific echosounder system. |
title_sort |
performance evaluation of a combined adcp- scientific echosounder system. |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03428126 https://hal.science/hal-03428126/document https://hal.science/hal-03428126/file/Oceans2021Sig100-Final.pdf |
op_coverage |
San Diego, United States |
genre |
Antarc* Antarctic Antarctic Krill |
genre_facet |
Antarc* Antarctic Antarctic Krill |
op_source |
OCEANS 2021 San Diego – PortoAt: San Diego, CA, USA https://hal.science/hal-03428126 OCEANS 2021 San Diego – PortoAt: San Diego, CA, USA, Sep 2021, San Diego, United States |
op_relation |
hal-03428126 https://hal.science/hal-03428126 https://hal.science/hal-03428126/document https://hal.science/hal-03428126/file/Oceans2021Sig100-Final.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1786800055993237504 |