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current meters
141 record(s)
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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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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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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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1.- Se pretende ubicar en la estricta verticalidad del pecio un barco de tecnología moderna que tenga la posibilidad de transportar y hacer operativo un ROV. Dicho ROV deberá ser capaz de descender hasta los 1200 metros del objetivo, y pasar varias horas de trabajo diarias filmando y fotografiando los restos del pecio. Por lo tanto debe entenderse que la clara finalidad de esta Campaña estriba en la documentación, “mapeado” arqueológico e interpretación y análisis del estado actual del pecio. 2.- Además de lo anterior, se pretende realizar la cartografía de la zona de hundimiento de la Fragata Nuestra Señora de Las Mercedes. Para ello, con la sonda multihaz EM710 se llevará a cabo un levantamiento batimétrico sistemático de la zona del hundimiento con recubrimiento redundante solapando al 100%, con los haces cerrados al máximo y velocidad no superior a 5 nudos. De estemodo, se consigue una elevada densidad de puntos sondados que permitirá realizar una cartografía de gran resolución.
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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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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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<p>The annual MOOSE-GE campaigns, initiated in 2010, are part of the network long-term observation of the Mediterranean, MOOSE, SOERE Allenvi and SNO labelled network by the INSU. The objective of this observation network is to monitor the long-term evolution of the North-Western Mediterranean in the context of climate change and anthropogenic pressure, in order to be able to detect and identify the trend of environmental anomalies of this marine ecosystem. MOOSE aims to maintain an integrated observation network and multidisciplinary in the Mediterranean Sea in accordance with the objectives of the MISTRALS programmes (HyMeX, MERMeX and ChArMEx).</p> <p style="text-align:center"><img alt="" src=" https://campagnes.flotteoceanographique.fr/campagnes/18000442/images/444.jpg" style="width: 500px; height: 294px;"></p>
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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.
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The main objective foreseen in the ECOMARG 2021 campaign, to be carried out on board the R/V Ángeles Alvariño (IEO), is the study of the spatial distribution, structure and dynamics of vulnerable habitats of the ZEC “El Cachucho” (Le Danois Bank and its internal basin) and the head of the nearby Lastres canyon. Specific objectives: • Estimation of the abundance and spatial distribution of the epibenthic communities that characterize the vulnerable habitats present in the area, with special priority for the classified as 1170 Reefs in the DH. • Monitoring of the conservation status of vulnerable habitats and their communities biological, using fixed sampling stations, through indicators of the Red Natura 2000, in accordance with article 17 of the Habitats Directive, applying technical photogrammetric. • Geophysical study of the Lastres and Llanes canyons by obtaining cartography high resolution. • Characterization of the oceanographic dynamics of the BBL (Benthic Boundary Layer - layer near the bottom) in the Gaviera Canyon and in the fixed sampling stations from El Cachucho to know the environmental characteristics of the habitats 1170. • Study of the mobile species (mainly fish, crustaceans, and mollusks) of the Vulnerable habitats present at fixed sampling stations using platforms multiparametric (landers).