Spectral and statistical analyses of ambient noise in Spitsvergen Fjords and identification of glacier calving events

Calving of glaciers generates sound audible underwater, useful in studying glacier processes and ice floes dynamics. Measurements of underwater ambient noise were carried out in two completely different Spitsbergen fjords - Hornsund, surrounded by melting glaciers, and Murchison, devoid of glaciers...

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Main Authors: Tegowski, J, Deane, Grant, Lisimenka, A, Blondel, Philippe
Format: Article in Journal/Newspaper
Language:English
Published: Institute of Acoustics 2012
Subjects:
Online Access:https://researchportal.bath.ac.uk/en/publications/ab4700ff-21c3-4253-9a5d-03d1466fdcea
https://purehost.bath.ac.uk/ws/files/10162714/ECUA2012_Tegowski_etal_p314.pdf
http://www.scopus.com/inward/record.url?eid=2-s2.0-84871394394&partnerID=40&md5=be33f218bdd85fa3d38b276c138e47c2
id ftunivbathcris:oai:purehost.bath.ac.uk:publications/ab4700ff-21c3-4253-9a5d-03d1466fdcea
record_format openpolar
spelling ftunivbathcris:oai:purehost.bath.ac.uk:publications/ab4700ff-21c3-4253-9a5d-03d1466fdcea 2023-06-11T04:12:28+02:00 Spectral and statistical analyses of ambient noise in Spitsvergen Fjords and identification of glacier calving events Tegowski, J Deane, Grant Lisimenka, A Blondel, Philippe 2012 application/pdf https://researchportal.bath.ac.uk/en/publications/ab4700ff-21c3-4253-9a5d-03d1466fdcea https://purehost.bath.ac.uk/ws/files/10162714/ECUA2012_Tegowski_etal_p314.pdf http://www.scopus.com/inward/record.url?eid=2-s2.0-84871394394&partnerID=40&md5=be33f218bdd85fa3d38b276c138e47c2 eng eng Institute of Acoustics info:eu-repo/semantics/openAccess Tegowski , J , Deane , G , Lisimenka , A & Blondel , P 2012 , Spectral and statistical analyses of ambient noise in Spitsvergen Fjords and identification of glacier calving events . in 11th European Conference on Underwater Acoustics 2012, ECUA 2012 . Institute of Acoustics , St. Albans , pp. 1667-1672 , 11th European Conference on Underwater Acoustics , Edinburgh , UK United Kingdom , 1/07/12 . contributionToPeriodical 2012 ftunivbathcris 2023-05-08T13:22:34Z Calving of glaciers generates sound audible underwater, useful in studying glacier processes and ice floes dynamics. Measurements of underwater ambient noise were carried out in two completely different Spitsbergen fjords - Hornsund, surrounded by melting glaciers, and Murchison, devoid of glaciers but full of floating ice floes, at frequencies from 20 Hz to 24 kHz using an omnidirectional hydrophone deployed at 18 meters deep. Calm weather during the experiments enabled measurements without noise coming from wind, rain or breaking waves. Statistical and spectral analyses of its variations were used to identify calving events and phenomena associated with the dynamics of ice floes. We hypothesise that, at low frequencies, the probability density distribution of the noise significantly differs from the normal distribution and gives clues about the number and diversity of contributing sources. Goodness-of-fit tests were performed across all frequency bands, and their results showed central-limit behavior in a high frequency range (>2.5 kHz). For low frequencies (below 1 kHz), the histograms of instantaneous noise spectrum level averaged over 1-minute intervals were compared to the theoretical Gaussian distribution, whose 0.9th quantile was determined as a threshold value in order to distinguish high energy spectral components of non-Gaussian origin (long-tail part of distribution). Article in Journal/Newspaper Hornsund Spitsbergen University of Bath's research portal Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Murchison ENVELOPE(144.250,144.250,-67.317,-67.317)
institution Open Polar
collection University of Bath's research portal
op_collection_id ftunivbathcris
language English
description Calving of glaciers generates sound audible underwater, useful in studying glacier processes and ice floes dynamics. Measurements of underwater ambient noise were carried out in two completely different Spitsbergen fjords - Hornsund, surrounded by melting glaciers, and Murchison, devoid of glaciers but full of floating ice floes, at frequencies from 20 Hz to 24 kHz using an omnidirectional hydrophone deployed at 18 meters deep. Calm weather during the experiments enabled measurements without noise coming from wind, rain or breaking waves. Statistical and spectral analyses of its variations were used to identify calving events and phenomena associated with the dynamics of ice floes. We hypothesise that, at low frequencies, the probability density distribution of the noise significantly differs from the normal distribution and gives clues about the number and diversity of contributing sources. Goodness-of-fit tests were performed across all frequency bands, and their results showed central-limit behavior in a high frequency range (>2.5 kHz). For low frequencies (below 1 kHz), the histograms of instantaneous noise spectrum level averaged over 1-minute intervals were compared to the theoretical Gaussian distribution, whose 0.9th quantile was determined as a threshold value in order to distinguish high energy spectral components of non-Gaussian origin (long-tail part of distribution).
format Article in Journal/Newspaper
author Tegowski, J
Deane, Grant
Lisimenka, A
Blondel, Philippe
spellingShingle Tegowski, J
Deane, Grant
Lisimenka, A
Blondel, Philippe
Spectral and statistical analyses of ambient noise in Spitsvergen Fjords and identification of glacier calving events
author_facet Tegowski, J
Deane, Grant
Lisimenka, A
Blondel, Philippe
author_sort Tegowski, J
title Spectral and statistical analyses of ambient noise in Spitsvergen Fjords and identification of glacier calving events
title_short Spectral and statistical analyses of ambient noise in Spitsvergen Fjords and identification of glacier calving events
title_full Spectral and statistical analyses of ambient noise in Spitsvergen Fjords and identification of glacier calving events
title_fullStr Spectral and statistical analyses of ambient noise in Spitsvergen Fjords and identification of glacier calving events
title_full_unstemmed Spectral and statistical analyses of ambient noise in Spitsvergen Fjords and identification of glacier calving events
title_sort spectral and statistical analyses of ambient noise in spitsvergen fjords and identification of glacier calving events
publisher Institute of Acoustics
publishDate 2012
url https://researchportal.bath.ac.uk/en/publications/ab4700ff-21c3-4253-9a5d-03d1466fdcea
https://purehost.bath.ac.uk/ws/files/10162714/ECUA2012_Tegowski_etal_p314.pdf
http://www.scopus.com/inward/record.url?eid=2-s2.0-84871394394&partnerID=40&md5=be33f218bdd85fa3d38b276c138e47c2
long_lat ENVELOPE(15.865,15.865,76.979,76.979)
ENVELOPE(144.250,144.250,-67.317,-67.317)
geographic Hornsund
Murchison
geographic_facet Hornsund
Murchison
genre Hornsund
Spitsbergen
genre_facet Hornsund
Spitsbergen
op_source Tegowski , J , Deane , G , Lisimenka , A & Blondel , P 2012 , Spectral and statistical analyses of ambient noise in Spitsvergen Fjords and identification of glacier calving events . in 11th European Conference on Underwater Acoustics 2012, ECUA 2012 . Institute of Acoustics , St. Albans , pp. 1667-1672 , 11th European Conference on Underwater Acoustics , Edinburgh , UK United Kingdom , 1/07/12 .
op_rights info:eu-repo/semantics/openAccess
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