Browsing by Subject "Underwater acoustics"

Now showing items 1-20 of 62

    • A critical period of susceptibility to sound in the sensory cells of cephalopod hatchlings 

      Solé Carbonell, Marta; Lenoir, Marc; Fortuño Alós, Jose-Manuel; Van der Schaar, Mike Connor Roger Malcolm; André, Michel (2018-01-01)
      Article
      Open Access
      The cephalopod statocyst and lateral line systems are sensory organs involved in orientation and balance. Lateral lines allow cephalopods to detect particle motion and are used for locating prey or predators in low light ...

    • A decade of underwater noise research in support of the European Marine Strategy Framework Directive 

      Merchant, Nathan D.; Putland, Rosalyn L.; André, Michel; Baudin, Eric; Felli, Mario; Slabbekoorn, Hans; Dekeling, René (2022-09-01)
      Article
      Open Access
      Underwater noise from human activities is now widely recognised as a threat to marine life. Nevertheless, legislation which directly addresses this source of pollution is lacking. The first (and currently only) example ...

    • A novel approach to real-time range estimation of underwater acoustic sources using supervised machine learning 

      Houégnigan, Ludwig; Safari, Pooyan; Nadeu Camprubí, Climent; Van der Schaar, Mike Connor Roger Malcolm; André, Michel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference lecture
      Open Access
      The proposed paper introduces a novel method for range estimation of acoustic sources, both cetaceans and industrial sources, in deep sea environments using supervised learning with neural networks in the contex of a single ...

    • Acoustic system for physical oceanography research in deep ocean 

      Biescas, Berta; Sallarès, Valentí; Mojica, Jhon; Carniel, Sandro (SARTI, 2016)
      Conference lecture
      Open Access
      Marine multichannel seismic (MCS) data, used to obtain structural reflection images of the Earth’s subsurface, can also be used in physical oceanography exploration. This method provides vertical and lateral resolutions of ...

    • Acoustic tag tracking: first experiments 

      Masmitjà Rusiñol, Ivan; Gomáriz Castro, Spartacus; Río Fernandez, Joaquín del; Kieft, B.; O'Reilly, Thomas; Aguzzi, Jacopo; Bouvet, P.J. (SARTI, 2018)
      Article
      Open Access
      Nowadays, the use of autonomous vehicles for ocean research has increased, since these vehicles have a better cost/performance ratio than crewed vessels or oceanographic ships. For example, autonomous surface vehicles can ...

    • Acoustic tracking of Nephrops norvegicus by networked moored hydrophones in a deep-sea no-take reserve of the North Western Mediterranean Sea 

      Masmitjà Rusiñol, Ivan; Gomáriz Castro, Spartacus; Río Fernandez, Joaquín del; Navarro, Joan; Vigo Fernandez, Maria; Aguzzi, Jacopo; Bahamón Rivera, Nixon; García del Arco, José Antonio; Rotllant Estelrich, Guiomar; Company Claret, Joan Baptista (2020-12-01)
      Article
      Open Access
      Knowing the displacement capacity and mobility patterns of fished marine resources is pivotal to establish effective conservation management strategies in marine ecosystems. Accurate behavioral information of deep-sea ...

    • An acoustic valve within the nose of sperm whales Physeter macrocephalus 

      Huggenberger, Stefan; André, Michel; Oelschläger, Helmut A. (2014-04-01)
      Article
      Restricted access - publisher's policy
      Sperm whales Physeter macrocephalus emit impulsive sound signals in short series of rhythmic clicks (codas) for communication, and in long series of single acoustic events (usual clicks) for echolocation. Both click types ...

    • An interoperable architecture for in situ ocean noise monitoring 

      Martínez Padró, Enoc; Masmitjà Rusiñol, Ivan; Garcia Benadí, Albert; Toma, Daniel; Gomáriz Castro, Spartacus; Río Fernandez, Joaquín del (2021)
      Conference report
      Open Access
      Anthropogenic noise in the oceans has been significantly raising in the past decades due to an increment of human activities, adversely affecting the marine habitat. In order to assess and limit this impact, the long -term ...

    • Analysis and initial design of bidirectional acoustic tag modulation schemes and communication protocol 

      Corregidor, Daniel; Masmitjà Rusiñol, Ivan; López Navarro, Juan Manuel; Gomáriz Castro, Spartacus; Navarro, Joan; De Arcas Castro, Guillermo (2021)
      Conference report
      Restricted access - publisher's policy
      Acoustic underwater tags are key devices to study marine animals and obtain information regarding their behaviour. This information is essential to increase our knowledge of oceanic species and implement efficient conservation ...

    • Autonomous acoustic surveillance system for nearshore soundscaping 

      Maslov, Dmytro; Pereira, Eduardo; Miranda, Tiago; Valente, Isabel; Pinheiro, Marisa; Cruz, Fabio (SARTI, 2018)
      Article
      Open Access
      In response to global climate change and growing industry capabilities, researchers are looking for robust and soft engineered solutions for nearshore ecosystems. A newly developed Multifunctional Artificial Reef is capable ...

    • Biological and anthropogenic sound sources: effects and control in the European Seas Observatory Network (ESONET) 

      André, Michel; Manuel Lázaro, Antonio; Dañobeitia, Juan José; Rolin, Jean-François; Person, Roland (2008-08-01)
      Article
      Restricted access - publisher's policy

    • Caracterización de sistemas de comunicación RF y ópticos en aplicaciones submarinas 

      Arias Rodríguez, Arnau (Universitat Politècnica de Catalunya, 2022-07-12)
      Bachelor thesis
      Open Access
      La necessitat urgent de comprendre més el funcionament dels ecosistemes marins posa en importància la recopilació de dades per a posteriors anàlisis. A causa de l'entorn, suposa un gran repte la recuperació d'aquestes dades ...

    • Changes in 63 Hz third-octave band sound levels over 42 months recorded at four deep-ocean observatories 

      Van der Schaar, Mike Connor Roger Malcolm; Ainslie, Michael A.; Robinson, Stephen P.; Prior, Mark K.; André, Michel (2014-02-15)
      Article
      Restricted access - publisher's policy
      The growing scientific and societal concerns about the effects of underwater sound on marine ecosystems have been recently recognised through the introduction of several international initiatives, like the International ...

    • Classification of sperm whale clicks (Physeter macrocephalus) with Gaussian-kernel based networks 

      Van der Schaar, Mike Connor Roger Malcolm; Delory, Eric; André, Michel (2008-11-15)
      Article
      Open Access
      With the aim of classifying sperm whales, this report compares two methods that can use Gaussian functions, a radial basis function network, and support vector machines which were trained with two different approaches known ...

    • Combined current profiling and biological echosounding results from a single ADCP 

      Velasco, David W.; Nylund, Sven; Molina Pacheco, Cristobal (SARTI, 2018)
      Article
      Open Access
      The present work describes a newly-developed Acoustic Doppler Current Profiler (ADCP) that has a fully integrated single-beam wide-band biological echosounder, thus serving a dual purpose: current measurement and biomass ...

    • Comunicació i posicionament subaquàtic mitjançant mòdems de baix cost 

      Font Fullera, Oleguer (Universitat Politècnica de Catalunya, 2020-10-29)
      Bachelor thesis
      Open Access
      Actualment, gràcies a l’interès i les millores tecnològiques en les comunicacions sense cables, les comunicacions acústiques subaquàtiques han guanyat importància i s’han convertit en les més utilitzades en el mar. Aquestes ...

    • Contribution to unravel variability in bowhead whale songs and better understand its ecological significance 

      Erbs, Florence Amandine; Van der Schaar, Mike Connor Roger Malcolm; Weissenberger, Jürgen; Zaugg, Serge Alain; André, Michel (Nature, 2021-01-08)
      Article
      Open Access
      Since the first studies on bowhead whale singing behaviour, song variations have been consistently reported. However, there has been little discussion regarding variability in bowhead whale singing display and its ecological ...

    • Dataflow of underwater noise measurements: from OBSEA to EMODnet 

      Río Fernandez, Joaquín del; André, Michel; Folegot, Thomas; Van der Schaar, Mike Connor Roger Malcolm; Gorringe, Patrick; Novellino, Antonio; Garcia Benadí, Albert; Martínez Padró, Enoc (SARTI, 2018)
      Article
      Open Access
      Underwater noise has been significantly raising in the past decades due to an increment of human-related activities in the oceans such as shipping, industrial activities, seismic explorations, etc. These activities may ...

    • Desarrollo de algoritmos de posicionamiento mediante módems acústicos 

      Montalvo Martín, Salvador (Universitat Politècnica de Catalunya, 2020-10-28)
      Master thesis
      Restricted access - author's decision
      Las comunicaciones submarinas se realizan mediante módems acústicos. El grupo SARTI (Sistemas de Adquisición Remota y Tratamiento de la Información) dispone de dos módems de comunicación del fabricante EvoLogics que permiten ...

    • Design of obstacle detection and avoidance system for GUANAY II AUV 

      Galarza Bogotá, Cesar Mauricio; Masmitjà Rusiñol, Ivan; Prat Tasias, Jordi; Gomáriz Castro, Spartacus (IEEE Press, 2016)
      Conference report
      Open Access