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Cr. CEE 90. Control of Phytoplankton Dominance. - ref 900911.0004
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FWO MINIMOUND Project: Using Cold-water coral mini-mounds as analogue for giant mound growth: assessment of environmental drivers and anthropogenic impact Cold-water corals (CWC) are found along the entire north-eastern Atlantic Margin from Norway to the Gulf of Cadiz. In the Porcupine Seabight, these coral reefs (mainly Lophelia pertusa and Madrepora oculata) accumulate into large mounds of up to 250m high (e.g. Challenger Mound), which have been well studied over the past two decades (Roberts et al., 2006). The detailed mechanism of the start-up phase of such large CWC mounds is however not yet fully understood. Therefore, it is essential to study analogues of these stages that are not well recorded in larger mounds. The FWO MINIMOUND project (2013-2016) aims to investigate the initiation, growth and demise of small CWC mounds and to determine the role of climatic and hydrocarbon-seepage related processes as well as anthropogenic impact. This high-resolution multidisciplinary study will focus on three minimound provinces along the Biscay continental margin: (1) the Explorer and Dangeard Canyons on the Celtic Margin (Fig. 1; Stewart et al., 2013), (2) the Guilvinec Canyon on the Armorican Margin (De Mol et al., 2011) and (3) the Upper Ferrol Canyon on the Cantabrian Margin (Fig. 1). These minimounds are fossil (9.7 ka BP) and occur at relative shallow depth on the interface between the Eastern North Atlantic Central Water (ENACW) and the Mediterranean Outflow Water (MOW). Contrastingly, most present-day living CWC reef habitats dwell in the deeper MOW depth range, relying on the density and dynamics of this water mass for their food supply.   The objectives of the project are threefold: (1) the establishment of a chronostratigraphic framework and the reconstruction of palaeoceanographic changes over the last 15.000 years in order to determine the impact of glacial to interglacial climate change on the ENACW-MOW interface and the CWC habitats (Frank et al., 2011); (2) the minimound province at the Upper Ferrol Canyon shows a close association with hydrocarbon-seepage (pockmarks) which allows to assess the role of hydrocarbon related processes in CWC mound formation; (3) the potential impact of anthropogenic fisheries activities will be investigated. These objectives will be tackled through a coupled geophysical, sedimentological and integrative approach, including the palaeoceanographic and biogeochemical study of sediment cores in cooperation with the BGS (UK), LSCE (Gif-sur-Yvette, France), IFREMER (France), IGME (Spain) and IEO (Spain). This Belgica2015/15 cruise is the second campaign of the project and it aims to sample both on-mound as off-mound sites by means of a 4.5 m vibrocorer (Supplied by the British Geological Survey, BGS). The target site are located on the upper slopes of the Ferrol Canyon (Cantabrian margin, Spanish EEZ) and the Guilvinec Canyon (Armorican margin, French EEZ) between 200 and 600 m water depth. In each sector, a minimum of 3 days of activities will be scheduled. In case of bad weather on 1 sector, the program will be revised towards the other sector. With respect to the size of these mounds, the coring location of the vibrocorer will be steered by means of am IXSEA USBL GAPS system. During night-time, the seafloor will be visually characterized using a small and light-weight camera dropframe (University of Plymouth).
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CR CANTABRICO 02/95 - ref 130
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- Levantamientos hidrograficos sistematicos y exhaustivos que permitan el cartografiado total de sus fondos\n- Realizar exploraciones geofisicas que permitan determinar su constitucion y fisiografia \n- Llevar acabo coampa?as oceanograficas sistematicas para el estudio de los procesos fisicos\n- Procesar y tratar los datos obtenidos en las campa?as para la obtencion de mapas, cartas e informesen los cuales se definan las caracteristicas y el potencial economico de la ZEE\n- Hacer tratamiento informatico necesario para la integracion de datos en bancos de datos interactivos.\n- Poner a disposicion de la comunidad cientifica e industrial toda la informacion, salvo la restringida por afectar a la seguridad nacional.\n
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- Exploraciones geofisicas que permitan determinar su constitucion y fisiografia\n- Estudio de procesos fisicos\n- Procesado y tratamiento de datos, para la obtencion de mapas, cartas e informes\n- Estudio de batimetria, geomorfologia, gravimetria, magnetometria y calidades de sedimentos superficiales de las zonas estudiadas
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- Levantamientos hidrograficos sistematicos y exhaustivos que permitan el cartografiado total de sus fondos\n- Realizar exploraciones geofisicas que permitan determinar su constitucion y fisiografia \n- Llevar acabo coampa?as oceanograficas sistematicas para el estudio de los procesos fisicos\n- Procesar y tratar los datos obtenidos en las campa?as para la obtencion de mapas, cartas e informesen los cuales se definan las caracteristicas y el potencial economico de la ZEE\n- Hacer tratamiento informatico necesario para la integracion de datos en bancos de datos interactivos.\n- Poner a disposicion de la comunidad cientifica e industrial toda la informacion, salvo la restringida por afectar a la seguridad nacional.\n
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The overall objective of the cruise was to perform a systematic geophysical survey. The principal aim is to obtain complete bathymetric sea-floor coverage. There are other geophysical data obtained during the cruise, whose acquisition is compatible with the navigation requirements of the multibeam survey, such asgravity, geomagnetic and ultra-high resolution seismic data (TOPAS system).This project id the result of a cooperation between the Instituto Hidrografico de la Marina (IHM, Hydrographic Institution of the Spanish Navy) and the Real Observatorio de la Armada (ROA, Royal Observatory of the Spanish Navy), under the control of the Secretaria General Tecnica del Ministerio de Defensa (SEGENTE, General Technical Secretary of the Spanish Defense Department), whith the collaboration of several other institutions and universities.The cruise started on September 3rd at Santander and finished at La Coruña on September 27th. It was planned in order to cover two bathymetric charts (G7 and G8) to the NW of the Galicia Bank, but the good course of the works allowed to go beyond this first objective and finalize also chart G9, which was only partially covered during ZEE-2003 cruise.
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Cr.677
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Ria de Pontevedra
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ITXASO - I