USE OF AMBIENT SOUND MEASUREMENTS IN AN INTEGRATED SYSTEM FOR OCEAN MONITORING

Measurements of underwater sound were made at 16 frequencies in the range 500 Hz 50 kHz using 3 moored hydrophones located off the west coast of Ireland during Oct-Nov 2003. These data have been analysed in relation to environmental conditions, particularly wind speed and rainfall. Although there...

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Autores principales:	Guymer,Trevor, Quartly,Graham, Birch,Keith
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2004
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000200047
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spelling	oai:scielo:S0717-653820040002000472005-05-16USE OF AMBIENT SOUND MEASUREMENTS IN AN INTEGRATED SYSTEM FOR OCEAN MONITORINGGuymer,TrevorQuartly,GrahamBirch,KeithMeasurements of underwater sound were made at 16 frequencies in the range 500 Hz 50 kHz using 3 moored hydrophones located off the west coast of Ireland during Oct-Nov 2003. These data have been analysed in relation to environmental conditions, particularly wind speed and rainfall. Although there are some unexplained offsets in the overall acoustic levels compared with those obtained by other researchers, it has proved possible to develop a classification scheme enabling wind, drizzle, rain, and contamination to be separately identified. The acoustic data can be used to infer wind speed to within 2 m s-1. There is also useful skill in the detection of drizzle and rain events, and some encouraging results in the quantitative estimation of rain-rate have been achieved. Comparisons have been made with deployments of the hydrophones off SW England and Canada. It is found that when precipitation is absent, underwater sound can be predicted from wind speed alone to an accuracy of ±1dB provided the winds are not light. Suggestions are made as to how such a subsurface technique might be combined with spaceborne measurements to enable estimates of underwater sound levels globally. The feasibility of using hydrophones within the Argo float programme should be exploredinfo:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana (Concepción) v.68 n.2 suppl.TIProc 20042004-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000200047en10.4067/S0717-65382004000200047
institution	Scielo Chile
collection	Scielo Chile
language	English
description	Measurements of underwater sound were made at 16 frequencies in the range 500 Hz 50 kHz using 3 moored hydrophones located off the west coast of Ireland during Oct-Nov 2003. These data have been analysed in relation to environmental conditions, particularly wind speed and rainfall. Although there are some unexplained offsets in the overall acoustic levels compared with those obtained by other researchers, it has proved possible to develop a classification scheme enabling wind, drizzle, rain, and contamination to be separately identified. The acoustic data can be used to infer wind speed to within 2 m s-1. There is also useful skill in the detection of drizzle and rain events, and some encouraging results in the quantitative estimation of rain-rate have been achieved. Comparisons have been made with deployments of the hydrophones off SW England and Canada. It is found that when precipitation is absent, underwater sound can be predicted from wind speed alone to an accuracy of ±1dB provided the winds are not light. Suggestions are made as to how such a subsurface technique might be combined with spaceborne measurements to enable estimates of underwater sound levels globally. The feasibility of using hydrophones within the Argo float programme should be explored
author	Guymer,Trevor Quartly,Graham Birch,Keith
spellingShingle	Guymer,Trevor Quartly,Graham Birch,Keith USE OF AMBIENT SOUND MEASUREMENTS IN AN INTEGRATED SYSTEM FOR OCEAN MONITORING
author_facet	Guymer,Trevor Quartly,Graham Birch,Keith
author_sort	Guymer,Trevor
title	USE OF AMBIENT SOUND MEASUREMENTS IN AN INTEGRATED SYSTEM FOR OCEAN MONITORING
title_short	USE OF AMBIENT SOUND MEASUREMENTS IN AN INTEGRATED SYSTEM FOR OCEAN MONITORING
title_full	USE OF AMBIENT SOUND MEASUREMENTS IN AN INTEGRATED SYSTEM FOR OCEAN MONITORING
title_fullStr	USE OF AMBIENT SOUND MEASUREMENTS IN AN INTEGRATED SYSTEM FOR OCEAN MONITORING
title_full_unstemmed	USE OF AMBIENT SOUND MEASUREMENTS IN AN INTEGRATED SYSTEM FOR OCEAN MONITORING
title_sort	use of ambient sound measurements in an integrated system for ocean monitoring
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000200047
work_keys_str_mv	AT guymertrevor useofambientsoundmeasurementsinanintegratedsystemforoceanmonitoring AT quartlygraham useofambientsoundmeasurementsinanintegratedsystemforoceanmonitoring AT birchkeith useofambientsoundmeasurementsinanintegratedsystemforoceanmonitoring
_version_	1718442069127593984

USE OF AMBIENT SOUND MEASUREMENTS IN AN INTEGRATED SYSTEM FOR OCEAN MONITORING

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