Catálogo de datos del IEO
Type
series
4302 record(s)
Type of resources
INSPIRE themes
Provided by
Years
Formats
Status
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Studying the role played by formation of deep water in the chemical composition and budgets of matter in the Mediterranean. Understanding the relationships between the way plankton food webs are organized and the hydrodynamic structures. The related project is MISTRALS - MerMEX.
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<p>The multi-annual partnership-based research programme SPIRAL (deep seismic and regional investigation in northern Algeria) aims to study the deep structure of the North Algerian margin using "high penetration" seismic methods: low frequency vertical reflection shooting, as well as wide angle reflection and refraction with deployment of listening stations on the seabed and onshore. The first strand of the SPIRAL programme SPIRAL involves the sea cruise to acquire geophysical data. This cruise took place aboard RV L'Atalante in two legs, respectively from 26/09 (Oran) to 10/10 2009 (Annaba) and from 13/10 (Annaba) to 10/11 2009 (Oran). These two legs provided acquisition of wide-angle seismic and penetrating multichannel seismic reflection data, which was the main objective of the project, as well as additional data like very high resolution (Chirp or sediment sounder type), magnetic and gravimetric, and multibeam bathymetric echosounder data. The profiles acquired during SPIRAL should supply elements to characterize the structural levels in and under the sediment cover (crust) down to the mantle in the targeted zones given in the cruise report; obtain accurate images of faulted and folded area and the major boundaries like the Moho; constrain the physical and rheological properties (particularly velocity models) which should help determine things like the nature of the crust at the continent-ocean transition. These constraints will make it possible to perform thermo-mechanical modelling on the scale of the Maghrebide belts to the base of the crust (temperature, density) and thus specify the main boundaries of the large crustal domains.</p>
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The objectives of the BELMER project are: - to validate the MERIS water products for Belgian coastal waters and neighbouring French, UK and Dutch waters - to provide a quantitative statement of product accuracy and recommendations for improvements in the scientific algorithms, where appropriate. In particular the problems reported by the MERIS validation and user communities of turbid water atmospheric correction, case 2 water chlorophyll retrieval, adjacency effects (straylight), moderate sunglint, spatio-temporal variability of specific inherent optical properties and bottom reflectance will be addressed. This project is funded by the "PROgramme for the Development of scientific Experiments" (PRODEX) of the European Space Agency (ESA).
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Acoustic measurements.
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The RRS Discovery cruise 304 was conducted from 12 May to 6 June 2005 from and to Santa Cruz (Tenerife). The cruise was completed as part of the NERC founded RAPID programme to monitor the meridional overturning circulation at 26 N. The primary purpose was to service the eastern boundary and Mid-Atlantic Ridge part of the 26 N mooring array which had previously been serviced during the RRS Charles Darwin cruises 170 and 177. 12 moorings were successfully recovered, however two of the shallow eastern boundary moorings failed to release. Intense fishing activity at these sites is likely to be the cause. 12 mooring and four bottom pressure landers were re-deployed. Data from two bottom mounted inverted echosounders was uploaded via acoustic telemetry. A total of 10 CTD casts to calibrate the mooring sensors were carried out and 3 Argo floats (from the UK Met Office) were launched. The moored sensors are CTD loggers for the most part but also bottom pressure sensors, different types of current meters and inverted echosounders are used to determine the strength and structure of the meridional overturning circulation.
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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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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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The cruise is a component of RAPID-WATCH, whose objectives are: to deliver a decade-long time series of calibrated and quality-controlled measurements of the Atlantic MOC from the RAPID-WATCH array and; to exploit the data from the RAPID-WATCH array and elsewhere to determine and interpret recent changes in the Atlantic MOC, assess the risk of rapid climate change, and investigate the potential for predictions of the MOC and its impacts on climate. Objectives of this cruise: to recover, calibrate and redeploy moorings from the eastern boundary and mid-Atlantic ridge subarrays of the 26.5N line of RAPID moorings.
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Assessment of small pelagic species resources in the Gulf of Lion. This falls under the MEDIAS project.
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<p>The MARLBORO cruise project aimed to study Post-Messinian tectonic evolution in the South Alboran basin (Morocco). The presence of sediment formations, especially contourites (sediments deposited or reworked by marine bottom currents) and instabilities, deposited since the end of the Messinian (approx. 5.33 Ma), provide us with top rate sedimentary markers to recreate the tectonic evolution well. Moreover, the region is affected by strong quakes and by slope instabilities which cause concern. Although active accidents have been identified and recently mapped on the Andalusia margin, no such detailed studies have been conducted yet on the Moroccan margin. The Xauen/Tofino and Alboran ridges off Morocco, in the south of the Alboran Sea, were chosen for the study zone since they show both past and current signs of strong tectonic deformation, underwater landslides and activity of bottom currents whose contourite type deposits can provide an excellent stratigraphic marker. The cruise's objective was the imaging of post-Messinian structures using medium resolution reflection seismics. The cruise (7 days in the zone) made it possible to acquire about 1,100 km of reflection seismic surveys along the 15 profiles perpendicular to the ridges, and 3 profiles parallel to the ridges, in order to monitor the lateral and longitudinal evolution of contourites and of Mass Transport Deposits (MTDs), as well as the geometric relationships existing between these objects and active tectonic structures. The MARLBORO cruise is related to the French TerMex (Mediterranean margin) and Actions Marges (Améditer) programmes as well as to Spanish national Contouriber and SAGAS programmes and the international Topomed programme.</p>