Acoustic assessment of SIMRAD EK60 high frequency echo sounder signals (120 & 200 kHz) in the context of marine mammal monitoring
The use of active high frequency echo sounders for commercial activities and marine research has been increasing in recent years. Compared to other anthropogenic noise sources, high frequency echo sounders have received little attention in terms of their potential impacts on marine life. However, wh...
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ftloughboroughun:oai:figshare.com:article/9577211 2023-05-15T17:10:15+02:00 Acoustic assessment of SIMRAD EK60 high frequency echo sounder signals (120 & 200 kHz) in the context of marine mammal monitoring Denise Risch Ben Wilson Paul Lepper 2017-01-01T00:00:00Z https://figshare.com/articles/report/Acoustic_assessment_of_SIMRAD_EK60_high_frequency_echo_sounder_signals_120_200_kHz_in_the_context_of_marine_mammal_monitoring/9577211 unknown 2134/35950 https://figshare.com/articles/report/Acoustic_assessment_of_SIMRAD_EK60_high_frequency_echo_sounder_signals_120_200_kHz_in_the_context_of_marine_mammal_monitoring/9577211 CC BY 4.0 CC-BY Mechanical Engineering not elsewhere classified untagged Text Report 2017 ftloughboroughun 2022-01-01T19:39:28Z The use of active high frequency echo sounders for commercial activities and marine research has been increasing in recent years. Compared to other anthropogenic noise sources, high frequency echo sounders have received little attention in terms of their potential impacts on marine life. However, while these devices typically operate at centre frequencies outside the hearing range of most marine species, recent work has demonstrated that they may produce unintended energy at lower frequencies. These lower frequencies may extend into the audible range for several species of marine mammals and have the potential to affect their behaviour (Deng et al. 2014). Given the theoretical detectability of these lower frequencies by marine mammals, both signal types have the potential to elicit behavioural responses towards them. This should be considered in environmental impact assessments of activities using these devices and when planning marine mammal monitoring studies alongside ecosystem studies using active acoustic sonar systems. Report Marine Mammal Monitoring Loughborough University: Figshare |
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Loughborough University: Figshare |
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ftloughboroughun |
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Mechanical Engineering not elsewhere classified untagged |
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Mechanical Engineering not elsewhere classified untagged Denise Risch Ben Wilson Paul Lepper Acoustic assessment of SIMRAD EK60 high frequency echo sounder signals (120 & 200 kHz) in the context of marine mammal monitoring |
topic_facet |
Mechanical Engineering not elsewhere classified untagged |
description |
The use of active high frequency echo sounders for commercial activities and marine research has been increasing in recent years. Compared to other anthropogenic noise sources, high frequency echo sounders have received little attention in terms of their potential impacts on marine life. However, while these devices typically operate at centre frequencies outside the hearing range of most marine species, recent work has demonstrated that they may produce unintended energy at lower frequencies. These lower frequencies may extend into the audible range for several species of marine mammals and have the potential to affect their behaviour (Deng et al. 2014). Given the theoretical detectability of these lower frequencies by marine mammals, both signal types have the potential to elicit behavioural responses towards them. This should be considered in environmental impact assessments of activities using these devices and when planning marine mammal monitoring studies alongside ecosystem studies using active acoustic sonar systems. |
format |
Report |
author |
Denise Risch Ben Wilson Paul Lepper |
author_facet |
Denise Risch Ben Wilson Paul Lepper |
author_sort |
Denise Risch |
title |
Acoustic assessment of SIMRAD EK60 high frequency echo sounder signals (120 & 200 kHz) in the context of marine mammal monitoring |
title_short |
Acoustic assessment of SIMRAD EK60 high frequency echo sounder signals (120 & 200 kHz) in the context of marine mammal monitoring |
title_full |
Acoustic assessment of SIMRAD EK60 high frequency echo sounder signals (120 & 200 kHz) in the context of marine mammal monitoring |
title_fullStr |
Acoustic assessment of SIMRAD EK60 high frequency echo sounder signals (120 & 200 kHz) in the context of marine mammal monitoring |
title_full_unstemmed |
Acoustic assessment of SIMRAD EK60 high frequency echo sounder signals (120 & 200 kHz) in the context of marine mammal monitoring |
title_sort |
acoustic assessment of simrad ek60 high frequency echo sounder signals (120 & 200 khz) in the context of marine mammal monitoring |
publishDate |
2017 |
url |
https://figshare.com/articles/report/Acoustic_assessment_of_SIMRAD_EK60_high_frequency_echo_sounder_signals_120_200_kHz_in_the_context_of_marine_mammal_monitoring/9577211 |
genre |
Marine Mammal Monitoring |
genre_facet |
Marine Mammal Monitoring |
op_relation |
2134/35950 https://figshare.com/articles/report/Acoustic_assessment_of_SIMRAD_EK60_high_frequency_echo_sounder_signals_120_200_kHz_in_the_context_of_marine_mammal_monitoring/9577211 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
_version_ |
1766066822009847808 |