BUSCADOR RECOLECTA

The acquisition parameters of ESCI-Valencia Trough are: streamer 4500 m, 180 channels, group interval 25 m, sample rate 4 ms., The ESCI-Valencia Trough deep vertical reflection profile extends the crustal image of the ECORS-Pyrenees profile to the Mediterranean coast and provides a crustal transect of the NE Iberian margin. It is a 450 km lenght profile in a NW-SE direction between the Tarragona coast and the SE of Mallorca., Comisión Internacional de Ciencia y Tecnología (CICYT); GEO89-0858; GEO90-0733; PB86-0619; C91-0013.--, Peer reviewed

BIOANTART Cruise (29HE19930119) carried out on the Research Vessel Hespérides in 1993, Dynamic oceanography and productivity of the Bransfield Strait during the austral summer. (BIOANTAR 93). 1) Characterize the different water masses of the Bransfield Strait 2) Study the distribution and variability of the water masses that occupy the Strait from their hydrographic characteristics 3) Analyze the generation and propagation of short surface waves and half period 4) Determine the three-dimensional structure of circulation due to the main regional hydrodynamic agents. 5) Study of the influence of water masses on the distribution of planktonic communities. 6) Study of the importance of the essential nutrients on the growth and metabolism of phytoplankton. 7) Study of the contribution of the different fractions of plankton to abundance and primary productivity. 8) Study of the variability in the importance of microheterotrophic processes during the succession in the trophic structure of ecosystems. 9) Determine the respiratory metabolism of Antarctic microplankton and its relationships with environmental conditions. 10) Study of metabolism (respiration, growth and excretion) of zooplankton and its contribution to the decline of phytoplankton bloom. 11) Preparation of a balance of total production, net community production, exported production and respiratory metabolism of plankton 12) Study of the importance of the Bransfield Strait as spawning area and fish breeding 13) Evaluate the net metabolism of the upper layers of the Antarctic ocean during the austral summer 14) Determine the balance between autotrophic and heterotrophic organisms 15) Study of the role of light as a factor limiting the growth of phytoplankton populations

VARIMED Cruise (29HE19930601) carried out on the Research Vessel Hespérides in 1993, Mesoscale variability in the Western Mediterranean.(VARIMED). This campaign aims to study the role of mesoscale circulation structures in the general circulation of the surface layer and in the processes that determine both the biological productivity and the transport of organisms and sedimentary material, 1) Study of the structures of mesoscale and its interaction with the average circulation in frontal zones 2) Study of the coupling between the variability of physical and biological phenomena on a slope-platform front 3) Study of the relationship between platform-slope water mass exchanges with the Passive and dynamic transport of larval stages of pelagic and demersal species

MAST-1 Cruise (29HE19930805) carried out on the Research Vessel Hespérides in 1993, European Coastal Transition Zone-Islas Canarias. -To study the gradient of the hydrographic and biological transition, to the south of the Archipelago, from the oceanic waters west of the island of La Palma to the interior of the platform of the coast of Africa.- To study the structure and dynamics of the water of upwelling filaments, which extends towards the Canaries. -Make a detailed study of the fronts on both sides of the trail, and both sides of the filament. - Analyze the mechanisms of formation of the eddies, and calculate the speed of their displacement, in relation to the surface current. - Quantify the importance of eddies and filaments in the increase of productivity and transport of organic matter in the Canary region

CAMEL Cruise (29HE19931015) carried out on the Research Vessel Hespérides in 1993, The general scientific objective of the CAMEL 93 campaign is focused on the knowledge of the recent geological evolution, in a broad sense, of the intersaction zone between the final section of the Equatorial Canyon and the western end of the Transformative Fracture of Ferenando de Noronha. Another general objective of the campaign consists in the paleoceanographic study of the sediments deposited in the eastern and western Atlantic continental margins in areas near the equatorial zone during the last 400,000 years, and to deduce the evolution of the water masses of Antarctic origin, its distribution and most recent evolution, and the effects on ocean circulation resulting from the oscillations of the Antarctic ice caps. Morphosedimentary and geophysical geological study based on the obtaining of a mosaic of bathymetric profiles with multibeam, as well as geophysical profiles with high-resolution parametric probe (BPS), single-channel reflection seismic (air cannons), supplemented with background sonography obtained with sonar of lateral sweep and with profiles of magnetometry. Three samples have been made with gravity corer

GEBRA Cruise (29HE19931203) carried out on the Research Vessel Hespérides in 1993, Geological evolution of the Bransfield Basin and the South Scotia Sea Ridge. Work has been carried out with multibeam, single-channel reflection seismic, parametric BPS probe, magnetometry, gravity cores extraction and instrument anchoring. These techniques have allowed to characterize in great detail the morphostructure, the sedimentary coating and the magnetic anomalies of the studied area

ESEPAC-1 Cruise (29HE19990106) carried out on the Research Vessel Hespérides in 1999, Experimental Stimulation of Coastal Antarctic Production. The objective of the ESEPACcampaign is to recognize the factors that limit Antarctic plankton production in order to predict changes in carbon fluxes associated with changes in Antarctic plankton production. The achievement of this objective will be carried out through: 1) Experimental verification of the processes that regulate the production of plankton, through large-scale manipulation experiments in mesocosms (large incubation bags, 30000-50000 liters). 2) The comparison of the experimentally obtained predictions with observations of the planktonic dynamics in Antarctic waters of contrasting areas, by means of oceanographic sampling in diverse zones of the Antarctic Peninsula.

MAGIA Cruise (29HE19990124) carried out on the Research Vessel Hespérides in 1999, The present project is a contribution to the detailed knowledge of the sedimentary architecture and the stratigraphy of the continental margin and the northern basin of the Antarctic Peninsula, with special interest in the study of the contribution of the processes of glacial origin in its development, as of the most recent sedimentary processes in the whole of the continental margin, in order to carry out a paleoenvironmental reconstruction at least during the last 20,000 years

ZEE-1999 Cruise (29HE19990516) carried out on the Research Vessel Hespérides in 1999, Exclusive Economic Zone Cruise 1999. Hydrographic-Oceanographic research plan of the Spanish Exclusive Economic Zone

FAX Cruise (29HE19990801) carried out on the Research Vessel Hespérides in 1999, Filament and Fluxes (CANIGO). The campaign was carried out in Canarian waters, the main objective was the estimation of the flows of heat, water, salts nutrient and organic material in a filament of the upwelling of Northwest Africa, and to determine the effect of this transport towards oligotrophic waters on the metabolic balance of carbon in the planktonic communities of the Canary region. The specific objectives of the campaign were: 1) Determine the variability and bidimensional structure of the surface fields of temperature, heat of the ocean, nutrients, inorganic carbon and currents, in relation to the filament, during the study period. 2) Determine the three-dimensional structure and field of currents in the upper 300 m of the filament, in order to determine the origin and dynamics of the filament waters. 3) Determine the flow of particulate and dissolved organic matter exported by the filaments from the upwelling to the oceanic waters. 4) Determine the spatial variability of phytoplanktonic phytosynthetic parameters, pigment concentrations and spectral quality of light in the filament region, to allow the development of primary production models on a regional scale. 5) Determine the metabolic balance of microbial communities (community production and respiration) in the transition zone from eutrophic waters to oligotrophic open waters. 6) Observe the langranian displacement field of a body of water along the "jet" of the filament, by means of drifting Argos buoys. 7) Study the evolution of the stratification, vertical shear, concentration of nutrients, productivity and bio-optical parameters in the upper 200 m of the water column, near a drifting buoy that runs along the "jet" of the filament