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Keyword
acoustic tracking systems
62 record(s)
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In this cruise the mooring lines deployed in April 2012 have been recovered. In addition communication between acoustic receivers and a deck unit has been tested. This is part of the international program OTN ("Ocean Tracking Network," in Spanish "Red de Seguimiento Oceánico"). This work is preparatory for the deployment of a curtain listening across the Strait of Gibraltar.
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Make the underwater archaeological chart of the coast of Murcia.
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Se pretende continuar con las labores acometidas en la Primera Campaña realizada en el 2015 en lo referido al conocimiento del pecio: - Extensión del pecio. - Estado de conservación de los materiales. - Dispersión de los restos del buque español. - Continuar con el “mapeado” arqueológico. - Avanzar en la interpretación y análisis del pecio. - Extracción de los siguientes elementos, basada en motivaciones de carácter histórico‐culturales, museográficas, de conservación, archivísticas y jurídicas: a.‐ Culebrina de bronce del siglo XVI. Peso aproximado: entre 1.300 y 1.800 Kg. b.‐ Un “cañón pedrero” u “obús de a tres”, de bronce. Pareja del extraído en 2015. c.‐ Elementos de la vajilla de plata estropeada (plata de chafalonía) que figura en la documentación del AGI. d.‐ También se extraerán algunos elementos que en el 2015 se filmaron y cuya función desconocemos. e.‐ Dependiendo de las circunstancias de la Campaña, es posible que se proceda a extraer la segunda culebrina de la Mercedes.
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The main objevtive of the FAUCES 1 bis is the identification of the rececent morphosedimentary feaures of two submarine canyons in the Albroan sea , Guadiaro and Garrucha. To achive this general objetive, we adquire data with the TOPAS system and the mulbeam bathimetry.
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ROV evaluation to analyze fishing pressure on benthic habitat
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The main objective of the Idrissi-2016 recovery cruise is to recovery the 10 Ocean Bottom Seismometers and Hydrophones (OBS/H) deployed in the ocean floor during the oceanographic mission Idrissi-2016 accomplished on September 2016. The OBS will have been acquiring earthquake data occurring in the area during 3 months under the sea. Seismic data will determine the shallow and deep crustal structure and plate geometry of the convergent system giving rise to earthquakes as the Mw 6.3 occurred on January 25th 2016, specially along the Al Idrissi fault, possibly the responsible of the geological hazards that threaten the region. In addition, the data acquired will allow improving our knowledge on the tectonics, faults parameters and landslides to define the most significant geological hazards, including large earthquakes and rarely tsunamis. Together with the OBS/H recovery, a detailed bathymetry survey of the Al Idrissi fault will be performed along the fault using hull-mounted echosounders on the vessel.
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Direct visual observation survey in order to improve the knowledge of marine bottoms in the Menorca Channel and Emile Baudot seamount. For that, the specific objectives are: 1. Improvement of the scientific knowledge for the physical, environmental and biological characterization of areas known to present high diversity of juveniles of European spiny lobster in the Menorca channel and 2. Start the biological characterization of benthic habitats in circalitoral and batyal bottoms in the Emile Baudot seamount.
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Analyze and evaluate the environmental impact on the coastal area of Gibraltar caused by the dumping of concrete and rock blocks into the sea.
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The campaign targets under INFUECO 1112, to carry on board the research vessel Angeles Alvariño, are the identification and mapping of habitats and characterization of biogenic benthic and demersal species. Specific objectives focus on the investigation of benthic Banks areas of 'Amanay' and 'El Banquete' by direct and visual methods. Specifically: · Extensive visual videogrammetry HD with sled towed "APHIA 2012". · Study epibenthic fauna through the use of beam trawl, to capture sessile and reduced mobility fauna in shallow soft bottoms and rock, and rock dredge for qualitative sampling of wildlife sessile hard bottom fauna. · Recognition with multibeam bathymetric and TOPAS parametric probe.
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Estimation by acoustical methods stock biomass of anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) Spanish Mediterranean.