Two-element acoustic array gives insight into ice-ocean interactions in Hornsund Fjord, Spitsbergen

Abstract Glacierized fjords are dynamic regions, with variable oceanographic conditions and complex ice-ocean interactions, which are still poorly understood. Recent studies have shown that passive underwater acoustics offers new promising tools in this branch of polar research. Here, we present res...

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Published in:Polish Polar Research
Main Authors: Głowacki, Oskar, Deane, Grant B., Moskalik, Mateusz, Tęgowski, Jarosław, Blondel, Philippe
Format: Article in Journal/Newspaper
Language:unknown
Published: Walter de Gruyter GmbH 2015
Subjects:
Online Access:http://dx.doi.org/10.1515/popore-2015-0025
http://content.sciendo.com/view/journals/popore/36/4/article-p355.xml
https://www.degruyter.com/view/j/popore.2015.36.issue-4/popore-2015-0025/popore-2015-0025.pdf
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spelling crdegruyter:10.1515/popore-2015-0025 2024-06-23T07:53:33+00:00 Two-element acoustic array gives insight into ice-ocean interactions in Hornsund Fjord, Spitsbergen Głowacki, Oskar Deane, Grant B. Moskalik, Mateusz Tęgowski, Jarosław Blondel, Philippe 2015 http://dx.doi.org/10.1515/popore-2015-0025 http://content.sciendo.com/view/journals/popore/36/4/article-p355.xml https://www.degruyter.com/view/j/popore.2015.36.issue-4/popore-2015-0025/popore-2015-0025.pdf unknown Walter de Gruyter GmbH http://creativecommons.org/licenses/by-nc-nd/3.0 Polish Polar Research volume 36, issue 4, page 355-367 ISSN 2081-8262 journal-article 2015 crdegruyter https://doi.org/10.1515/popore-2015-0025 2024-06-04T05:50:04Z Abstract Glacierized fjords are dynamic regions, with variable oceanographic conditions and complex ice-ocean interactions, which are still poorly understood. Recent studies have shown that passive underwater acoustics offers new promising tools in this branch of polar research. Here, we present results from two field campaigns, conducted in summer 2013 and spring 2014. Several recordings with a bespoke two-hydrophone acoustic buoy were made in different parts of Hornsund Fjord, Spitsbergen in the vicinity of tidewater glaciers to study the directionality of underwater ambient noise. Representative segments of the data are used to illustrate the analyses, and determine the directions of sound sources by using the time differences of arrivals between two horizontally aligned, broadband hydrophones. The results reveal that low frequency noise (< 3 kHz) is radiated mostly from the ice cliffs, while high-frequency (> 3 kHz) noise directionality strongly depends on the distribution of floating glacial ice throughout the fjord. Changing rates of iceberg production as seen for example in field photographs and logs are, in turn, most likely linked to signal amplitudes for relevant directions. These findings demonstrate the potential offered by passive acoustics to study the dynamics of individual tidewater glaciers. Article in Journal/Newspaper Hornsund Polar Research Spitsbergen De Gruyter Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Polish Polar Research 36 4 355 367
institution Open Polar
collection De Gruyter
op_collection_id crdegruyter
language unknown
description Abstract Glacierized fjords are dynamic regions, with variable oceanographic conditions and complex ice-ocean interactions, which are still poorly understood. Recent studies have shown that passive underwater acoustics offers new promising tools in this branch of polar research. Here, we present results from two field campaigns, conducted in summer 2013 and spring 2014. Several recordings with a bespoke two-hydrophone acoustic buoy were made in different parts of Hornsund Fjord, Spitsbergen in the vicinity of tidewater glaciers to study the directionality of underwater ambient noise. Representative segments of the data are used to illustrate the analyses, and determine the directions of sound sources by using the time differences of arrivals between two horizontally aligned, broadband hydrophones. The results reveal that low frequency noise (< 3 kHz) is radiated mostly from the ice cliffs, while high-frequency (> 3 kHz) noise directionality strongly depends on the distribution of floating glacial ice throughout the fjord. Changing rates of iceberg production as seen for example in field photographs and logs are, in turn, most likely linked to signal amplitudes for relevant directions. These findings demonstrate the potential offered by passive acoustics to study the dynamics of individual tidewater glaciers.
format Article in Journal/Newspaper
author Głowacki, Oskar
Deane, Grant B.
Moskalik, Mateusz
Tęgowski, Jarosław
Blondel, Philippe
spellingShingle Głowacki, Oskar
Deane, Grant B.
Moskalik, Mateusz
Tęgowski, Jarosław
Blondel, Philippe
Two-element acoustic array gives insight into ice-ocean interactions in Hornsund Fjord, Spitsbergen
author_facet Głowacki, Oskar
Deane, Grant B.
Moskalik, Mateusz
Tęgowski, Jarosław
Blondel, Philippe
author_sort Głowacki, Oskar
title Two-element acoustic array gives insight into ice-ocean interactions in Hornsund Fjord, Spitsbergen
title_short Two-element acoustic array gives insight into ice-ocean interactions in Hornsund Fjord, Spitsbergen
title_full Two-element acoustic array gives insight into ice-ocean interactions in Hornsund Fjord, Spitsbergen
title_fullStr Two-element acoustic array gives insight into ice-ocean interactions in Hornsund Fjord, Spitsbergen
title_full_unstemmed Two-element acoustic array gives insight into ice-ocean interactions in Hornsund Fjord, Spitsbergen
title_sort two-element acoustic array gives insight into ice-ocean interactions in hornsund fjord, spitsbergen
publisher Walter de Gruyter GmbH
publishDate 2015
url http://dx.doi.org/10.1515/popore-2015-0025
http://content.sciendo.com/view/journals/popore/36/4/article-p355.xml
https://www.degruyter.com/view/j/popore.2015.36.issue-4/popore-2015-0025/popore-2015-0025.pdf
long_lat ENVELOPE(15.865,15.865,76.979,76.979)
geographic Hornsund
geographic_facet Hornsund
genre Hornsund
Polar Research
Spitsbergen
genre_facet Hornsund
Polar Research
Spitsbergen
op_source Polish Polar Research
volume 36, issue 4, page 355-367
ISSN 2081-8262
op_rights http://creativecommons.org/licenses/by-nc-nd/3.0
op_doi https://doi.org/10.1515/popore-2015-0025
container_title Polish Polar Research
container_volume 36
container_issue 4
container_start_page 355
op_container_end_page 367
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