Catálogo de datos del IEO
Keyword
current meters
148 record(s)
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Characterizing the variability of hydrological and current features and particulate fluxes on the continental rise of the Gulf of Lion and in the deep convection zone. Monitoring of deep benthic communities in the western canyons and on the continental rise of the Gulf of Lion.
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Characterizing the variability of hydrological and current measurement features and particulate fluxes in two canyons of Le Planier (station PL1000) and Lacaze-Duthiers (station LD1000) located at the easternmost and westernmost tips of the Gulf of Lion.
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The main objective of the MOOSE-GE cruises is to observe the annual evolution of the Northwestern Mediterranean Sea in the context of the climate change and anthropogenic pressure in order to be able to detect and identify long-term environmental trend and anomalies of the marine ecosystem. The annual cruise focuses on moorings maintenance and hydrology, biogeochemistry and biology monitoring of the Northwestern Mediterranean basin. It aims to follow variability of water masses properties (LIW and WMDW) and biogeochemical and biological content related to these water masses.
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Characterizing the variability of hydrological and current measurement features and particulate fluxes in two canyons of Le Planier (station PL1000) and Lacaze-Duthiers (station LD1000) located at the easternmost and westernmost tips of the Gulf of Lion. Since 2011, setting up a long-term frame of reference in the convection zone - PPS3 trap, buoy zone and LION line.
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Characterizing the variability of hydrological and current features and particulate fluxes on the continental rise of the Gulf of Lion and in the deep convection zone. Monitoring of deep benthic communities in the western canyons and on the continental rise of the Gulf of Lion. This cruise was associated with the HERMES and EXTREMA projects.
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<p>Understanding the ecosystems of hydrothermal sites and their surrounding areas in the Atlantic: mapping and characterization of the geological and geochemical context, characterization of habitats, inventory of biodiversity in hydrothermal ecosystems and surrounding areas and geobiological connectivity and interaction.</p>
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This campaign is part of the experimental work that has been carried out in this area since 1996, as part of the CANIGO international and multidisciplinary project (financed by the European Union), as well as the FONDEBC project (financed by the IEO) and now part of the project CORICA approved by the National R + D + I Program in December 2001. The main objective of the subproject is to study, define, measure and model the movements of the water masses that are present in the eastern part of the subtropical turn of the North Atlantic, with special detail in the northward current of the Antarctic Intermediate Water (AAIW) and its interaction with Mediterranean Water (MW), to assess its importance in the transport of energy within the global climate. Goals:Due to incidents in the Gyroscope Campaign, the restructuring of the campaign plan that best suited itself was determined. The main objective was the funding of two series of current meters for the continuous hydrographic study of currents in a specific area of the Canary archipelago.
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Characterizing the variability of hydrology and currentology features and particulate fluxes in the two canyons of Planier (station PL1000) and Lacaze-Duthiers (station LD1000), located at the eastern and western edges of the Gulf of Lion.
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Retrieving an array of moored current meters recording subtidal circulation on the ocean margins of the Bay of Biscay (Armorican and Aquitaine shelves and slopes). Related hydrological measurements taken. This falls under the ASPEX project.
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<p style="text-align:justify">The main objective of the observing system MOOSE is to monitor the long-term evolution of the north-western Mediterranean Sea (over more than 10 years) in the context of climate change and anthropogenic pressure in order to detect and identify the trend and environmental anomalies of the marine ecosystem. The MOOSE network aims to establish an integrated and multidisciplinary system in the Mediterranean Sea in accordance with the objectives of the national MISTRALS program (HyMeX, MeRMEX and ChARMeX). The MOOSE system is supported by national institutes (CNRS-INSU, French Ministry of Higher Education and Research) and involved different partners (Universities, IFREMER, Meteo France).</p> <p style="text-align:justify">The MOOSE network includes "multi-scale" measurement capabilities to accurately document the broad spectrum of hydrodynamic processes already identified (large scale eddies, mesoscale eddies, biogeochemical provinces). High temporal resolution measurements are obtained from fixed observatories (moorings, buoys) but their spatial distribution remains insufficient. Spatial variability is of the same order as temporal variability and understanding the evolution of this basin as a whole implies being able to dissociate both. Synergy with other strategies (ships, floats, gliders) is essential for the establishment of an observation network in such a system. To address the issues identified by MOOSE, two key areas of the north-western basin have been identified:</p> <ul> <li style="text-align:justify">The central and western part of the Ligurian Sea, which constitutes a homogeneous system isolated from direct coastal inputs by rivers and where atmospheric inputs are predominant (DYFAMED and ANTARES). It is also one of the entrance passages of the Intermediate Levantine Water (LIW) in the north-western Mediterranean basin.</li> <li style="text-align:justify">The central area of the Gulf of Lion where winter cooling leads to vertical mixing over 2000 m and sometimes to the bottom. The LION site (42°N 5°E) is ideal for studying the variability of winter convection to better understand mixing processes and dense water formation. It also characterizes the variability of the deep particle flow.</li> </ul> <p style="text-align:justify">Currently, fixed observation at these sites is carried out by six moorings:</p> <ul> <li style="text-align:justify">The Planier and Lacaze-Duthiers moorings composed of sediment traps and T/S sensors and current meters, for dense water cascading and particle export studies. These moorings have been set up since 1994 and managed by CEFREM.</li> <li style="text-align:justify">The LION mooring, consisting of a large number of T/S sensors, current meters, and two oxygen sensors, is in the Gulf of Lion convection zone. It has been deployed since 2007, and is managed by CEFREM and LOCEAN. A sediment trap near the bottom has also been present for 2 years in this area (LIONCEAU mooring). The latter will be integrated into the LION mooring in 2019.</li> <li style="text-align:justify">The ANTARES mooring is located in the North Current off Toulon and equipped with T/S sensors, current meters and oxygen sensors to quantify the bacteria activity and organic matter remineralization process in a deep marine environment. It exists since 2004, it is managed by the M.I.O. and the CPPM (Marseille). This mooring is part of the ERIC EMSO since 2017.</li> <li style="text-align:justify">The DYFAMED mooring, in the Ligurian Sea, equipped with sediment traps, T/S sensors, current meters and oxygen sensors to monitor the evolution of the water column, the impact of atmospheric dust deposition and marine particles export to deep waters. It exists since 1988, it is currently managed by the Oceanological Observatory of Villefranche-sur-Mer. This mooring is part of the ERIC EMSO since 2017.