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1 to 22 of 22 results
  • Extraction of pulse repetition intervals from sperm whale click trains for ocean acoustic data mining

     Zaugg, Serge Alain; van der Schaar, Mike Connor Roger Malcolm; Houégnigan, Ludwig; Andre Sanchez, Michel
    Journal of the Acoustical Society of America
    Vol. 133, num. 2, p. 902-911
    DOI: 10.1121/1.4773278
    Date of publication: 2013-02
    Journal article

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  • Real-time monitoring of noise in cetacean acoustic niches

     Andre Sanchez, Michel; van der Schaar, Mike Connor Roger Malcolm; Zaugg, Serge Alain; Houégnigan, Ludwig; Sánchez, Antonio; Mas, Alex; Castell Balaguer, Joan Vicent
    Date of publication: 2012-11-15
    Book chapter

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    Sources of sound produced by human activities induce physical, physiological, and behavioral effects on marine fauna (mammals, reptiles, fish, and invertebrates), effects that can be diverse depending on the proximity to the signal source. These impacts include a reduction in the abundance of fish species of up to 50% in zones under exploration, changes in cetacean behavior and migration routes, and a distinct range of physical injuries in both marine vertebrates and invertebrates. There may be further long-term consequences due to chronic exposure, and sound can indirectly affect animals due to changes in the accessibility of prey, which may also suffer the adverse effects of acoustic pollution (Richardson et al. 1995). These damages could significantly impair the conservation of already endangered species that use acoustically contaminated areas for migratory routes, reproduction, and feeding.

    Sources of sound produced by human activities induce physical, physiological, and behavioral effects on marine fauna (mammals, reptiles, fish, and invertebrates), effects that can be diverse depending on the proximity to the signal source. These impacts include a reduction in the abundance of fish species of up to 50% in zones under exploration, changes in cetacean behavior and migration routes, and a distinct range of physical injuries in both marine vertebrates and invertebrates. There may be further long-term consequences due to chronic exposure, and sound can indirectly affect animals due to changes in the accessibility of prey, which may also suffer the adverse effects of acoustic pollution (Richardson et al. 1995). These damages could significantly impair the conservation of already endangered species that use acoustically contaminated areas for migratory routes, reproduction, and feeding.

  • Real-time monitoring of noise in cetacean acoustic niches

     Andre Sanchez, Michel; van der Schaar, Mike Connor Roger Malcolm; Zaugg, Serge Alain; Houégnigan, Ludwig; Sanchez Marrero, Antonio Miguel; Mas, Alex; Castell Balaguer, Joan Vicent
    Advances in experimental medicine and biology
    Vol. 730, p. 593-596
    DOI: 10.1007/978-1-4419-7311-5_134
    Date of publication: 2012
    Journal article

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    Sources of sound produced by human activities induce physical, physiological, and behavioral effects on marine fauna (mammals, reptiles, fish, and invertebrates), effects that can be diverse depending on the proximity to the signal source. These impacts include a reduction in the abundance of fish species of up to 50% in zones under exploration, changes in cetacean behavior and migration routes, and a distinct range of physical injuries in both marine vertebrates and invertebrates. There may be further long-term consequences due to chronic exposure, and sound can indirectly affect animals due to changes in the accessibility of prey, which may also suffer the adverse effects of acoustic pollution (Richardson et al. 1995). These damages could significantly impair the conservation of already endangered species that use acoustically contaminated areas for migratory routes, reproduction, and feeding.

  • A framework for the automated real-time detection of short tonal sounds from ocean observatories

     Zaugg, Serge Alain; van der Schaar, Mike Connor Roger Malcolm; Houégnigan, Ludwig; Andre Sanchez, Michel
    Applied acoustics
    Vol. 73, num. 3, p. 281-290
    DOI: 10.1016/j.apacoust.2011.09.009
    Date of publication: 2012
    Journal article

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  • Arctic Climate Change, Economy and Society (ACCESS) OCEAN.2010-1

     Gascard, Jean-Paul; Andre Sanchez, Michel; van der Schaar, Mike Connor Roger Malcolm; Castell Balaguer, Joan Vicent; Houégnigan, Ludwig; Zaugg, Serge Alain; Sánchez, Antonio; Sole Carbonell, Marta
    Competitive project

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  • Localising Cetacean Sounds for the Real-Time Mitigation and Long-Term Acoustic Monitoring of Noise

     Andre Sanchez, Michel; Houégnigan, Ludwig; van der Schaar, Mike Connor Roger Malcolm; Delory, Eric; Zaugg, Serge Alain; Sanchez, Antonio; Mas, Alex
    Date of publication: 2011-04
    Book chapter

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  • Low-frequency sounds induce acoustic trauma in cephalopods

     Andre Sanchez, Michel; Sole Carbonell, Marta; Lenoir, Marc; Durfort, Mercè; Quero, Carme; Mas, Alex; Lombarte Carrera, Antonio; van der Schaar, Mike Connor Roger Malcolm; López Bejar, Manel; Morell Ybarz, Maria; Zaugg, Serge Alain; Houégnigan, Ludwig
    Frontiers in ecology and the environment
    Vol. 9, num. 9, p. 489-493
    DOI: 10.1890/100124
    Date of publication: 2011
    Journal article

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    Listening to the Deep: Live monitoring of ocean noise and cetacean acoustic signals  Open access

     Andre Sanchez, Michel; van der Schaar, Mike Connor Roger Malcolm; Zaugg, Serge Alain; Houégnigan, Ludwig; Sánchez, A.M.; Castell Balaguer, Joan Vicent
    Marine pollution bulletin
    num. 63, p. 18-26
    DOI: 10.1016/j.marpolbul.2011.04.038
    Date of publication: 2011
    Journal article

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    The development and broad use of passive acoustic monitoring techniques have the potential to help assessing the large-scale influence of artificial noise on marine organisms and ecosystems. Deep-sea observatories have the potential to play a key role in understanding these recent acoustic changes. LIDO(Listening to the Deep Ocean Environment) is an international project that is allowing the real-time longterm monitoring of marine ambient noise as well as marine mammal sounds at cabled and standalone observatories. Here, we present the overall development of the project and the use of passive acoustic monitoring (PAM) techniques to provide the scientific community with real-time data at large spatial and temporal scales. Special attention is given to the extraction and identification of high frequency cetacean echolocation signals given the relevance of detecting target species, e.g. beaked whales, in mitigation processes, e.g. during military exercises.

  • Automated real-time acoustic detection of Fin Whale calls at the deep sea floor observatory off Kushiro-Tokachi, Japan

     Andre Sanchez, Michel; Ryoichi, Iwase; Tomonori, Akamatsu; Takahashi, Ichiro; Zaugg, Serge Alain; van der Schaar, Mike Connor Roger Malcolm; Houégnigan, Ludwig; Sanchez, Antonio
    IEEE Symposium on Scientific Use of Submarine Cables and Related Technologies
    DOI: 10.1109/UT.2011.5774104
    Presentation's date: 2011-04-05
    Presentation of work at congresses

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  • Impacto del Ruido generado durante el ciclo de vida de un parque eólico marino sobre mamíferos marinos (OCEAN LIDER)

     Amate Lopez, Juan; Andre Sanchez, Michel; Castell Balaguer, Joan Vicent; Houégnigan, Ludwig; Sánchez, Antonio; van der Schaar, Mike Connor Roger Malcolm; Zaugg, Serge Alain
    Competitive project

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  • Real-time acoustic classification of sperm whale clicks and shipping impulses from deep-sea observatories

     Zaugg, Serge Alain; van der Schaar, Mike Connor Roger Malcolm; Houégnigan, Ludwig; Gervaise, Cédric; Andre Sanchez, Michel
    Applied acoustics
    Vol. 71, num. 11, p. 1011-1019
    DOI: 10.1016/j.apacoust.2010.05.005
    Date of publication: 2010-01
    Journal article

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  • Space¿time and hybrid algorithms for the passive acoustic localisation of sperm whales and vessels

     Houégnigan, Ludwig; Zaugg, Serge Alain; van der Schaar, Mike Connor Roger Malcolm; Andre Sanchez, Michel
    Applied acoustics
    Vol. 71, num. 11, p. 1000-1010
    DOI: 10.1016/j.apacoust.2010.05.017
    Date of publication: 2010-11
    Journal article

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    In the frame of the European Sea-floor Observatory Network (ESONET) and in preparation of the Demonstration Mission Listening to the Deep-Ocean Environment (LIDO) algorithms for the automated real-time detection, classification and localisation of cetaceans have been developed. Such Passive Acoustic Monitoring techniques have the potential to play a key role in cetaceans’ conservation for they allow a non-invasive study of their behaviour, a better knowledge of their population dynamics, and a better understanding of their dynamic relationship with their environment. This paper investigates the development of efficient and accurate techniques to be used as the basis of a localisation module for an automated real-time Passive Acoustic Monitoring system. An opportunity to assess the capabilities of the developed localisation modules was given by recordings collected with a bottom-mounted (around 2080 m depth) tetrahedral compact hydrophone array located offshore the port of Catania (Sicily) during the NEMO-ONDE campaign in the years 2005–2006 by INFN and CIBRA [2]. A well-known class of methods for acoustic source localisation is based on time differences of arrival (TDOA). Its capabilities have shown to be useful even in adverse situations (i.e., few sensors, high noise levels and/or poor calibration). A second class of methods, the space–time methods, originated in underwater applications such as sonar but reached its most significant achievements over the last 20 years in digital communications with recent progress in the treatment of broadband signals. These developments are here revisited under the scope of the localisation and tracking of cetacean vocalisations. Various broadband space–time methods were implemented and allowed to map the sound radiated during the detected clicks and to consequently localise both sperm whales and vessels. Hybrid methods were also developed which improved the robustness of space–time methods to noise and reverberation and reduced processing time. In most cases, the small variance obtained for these estimates lessened the necessity of additional statistical clustering. Even though not independently confirmed by sightings, the tracks derived in the proposed frame can be considered to be consistent with the known movements of sperm whales and vessels.

  • Estimating the number of sperm whales in a group through variational clustering of acoustic features

     van der Schaar, Mike Connor Roger Malcolm; Zaugg, Serge Alain; Houégnigan, Ludwig; Andre Sanchez, Michel
    Conference of the European Cetacean Society
    Presentation's date: 2010-03-29
    Presentation of work at congresses

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  • Listening to the deep

     Andre Sanchez, Michel; van der Schaar, Mike Connor Roger Malcolm; Zaugg, Serge Alain; Houégnigan, Ludwig; Mas, Alex; Morell Ybarz, Maria; Solé, Marta; Castell Balaguer, Joan Vicent
    Conference of the European Cetacean Society
    p. 120-
    Presentation's date: 2010
    Presentation of work at congresses

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    Best practices in management, assessment and control of underwater noise pollution  Open access

     Andre Sanchez, Michel; Morell, Maria; Alex, Mas; Sole Carbonell, Marta; van der Schaar, Mike Connor Roger Malcolm; Houégnigan, Ludwig; Zaugg, Serge Alain; Castell Balaguer, Joan Vicent
    Date: 2009-06-30
    Report

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    The origin of this work can be found in the project `Effects and Control of Anthropogenic Noise in Marine Ecosystems¿ in the part relative to legal initiatives. In the first phase of the Report on this Project (December 2008) it was concluded that the level of complexity of marine issues, united by the fact that wide scientific gaps and difficulties still need to be covered and resolved, counseled against the immediate drawing up of legal projects concerning underwater acoustic pollution. Nevertheless, it was suggested that a document of `Best Practices¿ be elaborated to focus on the `state of the art¿ of this issue, and that it be used by public administrations and promoters of projects that will cause acoustic pollution, as much within the framework of environmental impact assessments as in management development plans in protected marine areas. It is of vital importance that activities, which generate acoustic pollution in the oceans, be monitored. Accordingly, this document could derive, in the short term, a Protocol of Applications which will in its own time open the way for the preparation of, if necessary, legislative initiatives within their own right.

    The origin of this work can be found in the project ‘Effects and Control of Anthropogenic Noise in Marine Ecosystems’ in the part relative to legal initiatives. In the first phase of the Report on this Project (December 2008) it was concluded that the level of complexity of marine issues, united by the fact that wide scientific gaps and difficulties still need to be covered and resolved, counseled against the immediate drawing up of legal projects concerning underwater acoustic pollution. Nevertheless, it was suggested that a document of ‘Best Practices’ be elaborated to focus on the ‘state of the art’ of this issue, and that it be used by public administrations and promoters of projects that will cause acoustic pollution, as much within the framework of environmental impact assessments as in management development plans in protected marine areas. It is of vital importance that activities, which generate acoustic pollution in the oceans, be monitored. Accordingly, this document could derive, in the short term, a Protocol of Applications which will in its own time open the way for the preparation of, if necessary, legislative initiatives within their own right.

  • SILENV - SHIP ORIENTED INNOVATIVE SOLUTIONS TO REDUCE NOISE VIBRATIONS

     Andre Sanchez, Michel; Mer, Loïc; van der Schaar, Mike Connor Roger Malcolm; Castell Balaguer, Joan Vicent; Zaugg, Serge Alain; Houégnigan, Ludwig; Sánchez, Antonio; Sole Carbonell, Marta
    Competitive project

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  • Architecture for the Real-Time Monitoring of Noise Pollution and Marine Mammal Activity

     van der Schaar, Mike Connor Roger Malcolm; Zaugg, Serge Alain; Houégnigan, Ludwig; Castell Balaguer, Joan Vicent; Andre Sanchez, Michel
    III International Workshop on Marine Technology (MARTECH 2009)
    Presentation of work at congresses

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  • Real-time processing and management of acoustic data streams in LIDO

     van der Schaar, Mike Connor Roger Malcolm; Zaugg, Serge Alain; Houégnigan, Ludwig; Andre Sanchez, Michel
    International Workshop on Detection, Classification and Localization of Marine Mammals using Passive Acoustics
    Presentation of work at congresses

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    Modelling the underwater noise associated to the construction and operation of offshore wind turbines  Open access

     Castell Balaguer, Joan Vicent; van der Schaar, Mike Connor Roger Malcolm; Mas, Alex; Zaugg, Serge Alain; Houégnigan, Ludwig; Morell Ybarz, Maria; Solé, Marta; Andre Sanchez, Michel
    International Workshop on Marine Technology
    Presentation's date: 2009
    Presentation of work at congresses

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    The operation and in particular the construction of offshore wind converters induce considerable underwater noise emissions. It is assumed that small whales and seals can be affected by noise from machines and vessels, piling and installation of the wind turbines. Piling, in particular using hydraulic hammers creates impulsive noise with considerable high energy levels. Currently, only little knowledge about the effects of different noises to marine life is available. Here, we present an ongoing project from the Laboratory of Applied Bioacoustics (Technical University of Catalonia): to simulate the generation, radiation and propagation of underwater noise; to develop forecasting hydro sound models of offshore wind converters and future noise reduction methods during pile driving; to determine the impact area of offshore wind farms; to allow the formulation of recommendations for acoustic emission thresholds; and to develop standard procedures for the determination and assessment of noise emissions.

  • System architecture for real-time monitoring of noise pollution

     van der Schaar, Mike Connor Roger Malcolm; Zaugg, Serge Alain; Riccobene, Giorgio; Sánchez, Antonio; Pubill, Oriol; Andre Sanchez, Michel
    Conference of the European Cetacean Society
    Presentation of work at congresses

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  • ESONET (LIDO - DEMOSTRATION MISSION)

     Andre Sanchez, Michel; van der Schaar, Mike Connor Roger Malcolm; Castell Balaguer, Joan Vicent; Zaugg, Serge Alain; Houégnigan, Ludwig; Sánchez, Antonio
    Competitive project

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  • ESONET, Network of Excellence

     Person, Roland; Andre Sanchez, Michel; van der Schaar, Mike Connor Roger Malcolm; Zaugg, Serge Alain; Houégnigan, Ludwig; Sánchez, Antonio; Castell Balaguer, Joan Vicent
    Competitive project

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