Objetivo The aim of this project is to study the biogeochemical cycles and fluxes in the ocean-sediment system, with special interest in the migration of elements. Biogeochemical fluxes to the deep ocean sediments were measured. This required high quality sampling, reliable stratigraphy, and comprehensive geochemical and sedimentological analysis. The initial phase of the planned programme, an intensive field work programme, has now been completed successfully. During the past year, attention has increasingly focused on the work up of the resultant large and complicated data set. The extraordinary quantity and quality of the core material recovered, particularly from the long core sampling programme on the RV Marion Dufresne, means that this work up phase will probably need to extend for several years in order to obtain the full scientific value of the resource. The long term scientific programme has been modified to reflect the consequences of the sampling success.The Mediterranean samples are outstanding. Data show that core material has been obtained reaching back more than a million years at one site. This is the first time that core sampling techniques have penetrated to this age in the Mediterranean, and this is a tribute to the engineering and ship capabilities of the (TAAF) (now (IFRTP)), the operators of the RV Marion Dufresne. Core material of unique importance, has been obtained, and the description of this material, and preliminary analysis of the most significant sections, are presented.The main areas of study will be: 1. Fluxes of elements and suspended matter within the water column. 2. Elemental fluxes across the sediment-water interface and within the sediment, with particular reference to organic carbon, oxygen, nutrients and metals. 3. Modern formation of sapropels, and diagenetic alteration of the sapropel record. (Sapropel: discrete layers of dark, organic-rich sediment). 4. Formation of manganese nodules and phosphorites in abyssal hill, sea-mount and slope sediment environments. 5. Element migration and mineralisation processes in sediments as a consequence of low-temperature hydrothermal alteration. 6. The development of novel sampling and in-situ measurement instrumentation in support of the above areas of study. Ámbito científico natural scienceschemical sciencesinorganic chemistrytransition metalsnatural sciencesearth and related environmental sciencesgeochemistrybiogeochemistry Programa(s) FP2-MAST 1 - Specific research and technological development programme (EEC) in the field of marine science and technology (MAST), 1989-1992 Tema(s) Data not available Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador NERC Institute of Oceanographic Sciences Aportación de la UE Sin datos Dirección Deacon Laboratory Brook Road Wormley GU8 5UB Godalming Reino Unido Ver en el mapa Coste total Sin datos Participantes (7) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo Commissariat à l'Energie Atomique (CEA) Francia Aportación de la UE Sin datos Dirección Centre d'Études de Cadarache Sere-Ders 13113 SAINT-PAUL-LEZ-DURANCE Ver en el mapa Coste total Sin datos Instituto Nacional de Investigação das Pescas Portugal Aportación de la UE Sin datos Dirección Avenida Brasilia 1400 Lisboa Ver en el mapa Coste total Sin datos NATIONAL CENTRE FOR MARINE RESEARCH Grecia Aportación de la UE Sin datos Dirección AGHIOS KOSMAS, HELLINIKON 16604 ELINIKO, ATHENS Ver en el mapa Coste total Sin datos TECHNISCHE UNIVERSITAET CLAUSTHAL Alemania Aportación de la UE Sin datos Dirección ADOLPH-ROEMER-STRASSE 2A 38678 CLAUSTHAL-ZELLERFELD Ver en el mapa Coste total Sin datos THE UNIVERSITY OF MILANO Italia Aportación de la UE Sin datos Dirección Via Luigi Mangiagalli 34 20133 MILANO Ver en el mapa Coste total Sin datos UNIVERSITE DE LIEGE*ULG Bélgica Aportación de la UE Sin datos Dirección PLACE DU 20 AOUT 7 4000 LIEGE Ver en el mapa Coste total Sin datos WISE & MUNRO LEARNING RESEARCH Países Bajos Aportación de la UE Sin datos Dirección 8,Azaleastraat 85 2565 CD DEN HAAG Ver en el mapa Enlaces Sitio web Opens in new window Coste total Sin datos