The use of an air bubble curtain to reduce the received sound levels for harbor porpoises (Phocoena phocoena)
In December 2005 construction work was started to replace a harbor wall in Kerteminde harbor, Denmark. A total of 175 wooden piles were piled into the ground at the waters edge over a period of 3 months. During the same period three harbor porpoises were housed in a marine mammal facility on the opp...
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ftloughboroughun:oai:figshare.com:article/9562025 2023-05-15T17:59:12+02:00 The use of an air bubble curtain to reduce the received sound levels for harbor porpoises (Phocoena phocoena) Klaus Lucke Paul Lepper Marie-Anne Blanchet Ursula Siebert 2011-01-01T00:00:00Z https://figshare.com/articles/journal_contribution/The_use_of_an_air_bubble_curtain_to_reduce_the_received_sound_levels_for_harbor_porpoises_Phocoena_phocoena_/9562025 unknown 2134/9592 https://figshare.com/articles/journal_contribution/The_use_of_an_air_bubble_curtain_to_reduce_the_received_sound_levels_for_harbor_porpoises_Phocoena_phocoena_/9562025 CC BY-NC-ND 4.0 CC-BY-NC-ND Mechanical Engineering not elsewhere classified Acoustics Underwater noise Exposure Tones Text Journal contribution 2011 ftloughboroughun 2022-01-01T20:41:43Z In December 2005 construction work was started to replace a harbor wall in Kerteminde harbor, Denmark. A total of 175 wooden piles were piled into the ground at the waters edge over a period of 3 months. During the same period three harbor porpoises were housed in a marine mammal facility on the opposite side of the harbor. All animals showed strong avoidance reactions after the start of the piling activities. As a measure to reduce the sound exposure for the animals an air bubble curtain was constructed and operated in a direct path between the piling site and the opening of the animals' semi-natural pool. The sound attenuation effect achieved with this system was determined by quantitative comparison of pile driving impulses simultaneously measured in front of and behind the active air bubble curtain. Mean levels of sound attenuation over a sequence of 95 consecutive pile strikes were 14 dB (standard deviation (s.d.) 3.4 dB) for peak to peak values and 13 dB (s.d. 2.5 dB) for SEL values. As soon as the air bubble curtain was installed and operated, no further avoidance reactions of the animals to the piling activities were apparent. Other Non-Article Part of Journal/Newspaper Phocoena phocoena Loughborough University: Figshare |
institution |
Open Polar |
collection |
Loughborough University: Figshare |
op_collection_id |
ftloughboroughun |
language |
unknown |
topic |
Mechanical Engineering not elsewhere classified Acoustics Underwater noise Exposure Tones |
spellingShingle |
Mechanical Engineering not elsewhere classified Acoustics Underwater noise Exposure Tones Klaus Lucke Paul Lepper Marie-Anne Blanchet Ursula Siebert The use of an air bubble curtain to reduce the received sound levels for harbor porpoises (Phocoena phocoena) |
topic_facet |
Mechanical Engineering not elsewhere classified Acoustics Underwater noise Exposure Tones |
description |
In December 2005 construction work was started to replace a harbor wall in Kerteminde harbor, Denmark. A total of 175 wooden piles were piled into the ground at the waters edge over a period of 3 months. During the same period three harbor porpoises were housed in a marine mammal facility on the opposite side of the harbor. All animals showed strong avoidance reactions after the start of the piling activities. As a measure to reduce the sound exposure for the animals an air bubble curtain was constructed and operated in a direct path between the piling site and the opening of the animals' semi-natural pool. The sound attenuation effect achieved with this system was determined by quantitative comparison of pile driving impulses simultaneously measured in front of and behind the active air bubble curtain. Mean levels of sound attenuation over a sequence of 95 consecutive pile strikes were 14 dB (standard deviation (s.d.) 3.4 dB) for peak to peak values and 13 dB (s.d. 2.5 dB) for SEL values. As soon as the air bubble curtain was installed and operated, no further avoidance reactions of the animals to the piling activities were apparent. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Klaus Lucke Paul Lepper Marie-Anne Blanchet Ursula Siebert |
author_facet |
Klaus Lucke Paul Lepper Marie-Anne Blanchet Ursula Siebert |
author_sort |
Klaus Lucke |
title |
The use of an air bubble curtain to reduce the received sound levels for harbor porpoises (Phocoena phocoena) |
title_short |
The use of an air bubble curtain to reduce the received sound levels for harbor porpoises (Phocoena phocoena) |
title_full |
The use of an air bubble curtain to reduce the received sound levels for harbor porpoises (Phocoena phocoena) |
title_fullStr |
The use of an air bubble curtain to reduce the received sound levels for harbor porpoises (Phocoena phocoena) |
title_full_unstemmed |
The use of an air bubble curtain to reduce the received sound levels for harbor porpoises (Phocoena phocoena) |
title_sort |
use of an air bubble curtain to reduce the received sound levels for harbor porpoises (phocoena phocoena) |
publishDate |
2011 |
url |
https://figshare.com/articles/journal_contribution/The_use_of_an_air_bubble_curtain_to_reduce_the_received_sound_levels_for_harbor_porpoises_Phocoena_phocoena_/9562025 |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_relation |
2134/9592 https://figshare.com/articles/journal_contribution/The_use_of_an_air_bubble_curtain_to_reduce_the_received_sound_levels_for_harbor_porpoises_Phocoena_phocoena_/9562025 |
op_rights |
CC BY-NC-ND 4.0 |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766167968211795968 |