Obiettivo The Mediterranean Ridge is generally considered to be a prism of sediments scraped off the subducting African plate accreted against the front of the overriding European plate during the process of convergence. IMERSE sets out to study the processes of deformation and fluid expulsion occurring within this deforming sediment pile and to better delineate the geological boundary between Africa and Europe. The overall objective of IMERSE is to provide the seismic observations necessary for a high resolution structural model for the Western Mediterranean Ridge, for a model of porosity distribution within the wedge, and for an understanding of this accretionary wedge as a system of interrelated deformation, sediment dewatering, and fluid expulsion. The IMERSE data set will consist of a combination of wide-angle and near- vertical reflection data, providing respectively the velocity and high resolution structural information required to meet the objectives. These data will be acquired both as profiles across the accretionary wedge of sediments and also within a small area across the deformation front, providing both a two-dimensional section across the entire system and a three-dimensional data volume in the most critical region. The near-vertical data will be acquired using a large tuned airgun source array, and the wide-angle data will be acquired by the ocean-bottom seismometers deployed to record the airgun shots. The data sets will be used to construct a detailed velocity model for the deforming sediments, using iterative prestack depth migration on the near- vertical data, and through the modelling of the wide-angle data. This will subsequently be inverted for porosity, thus providing information on the current fluid volume within the deforming sediment pile, and hence by comparison with the undeformed equivalent units, on the fluid expelled from the wedge during accretion and deformation. Campo scientifico natural sciencesearth and related environmental sciencesgeologyseismology Programma(i) FP3-MAST 2 - Specific research and technological development programme (EEC) in the field of marine science and technology, 1990-1994 Argomento(i) 0105 - Marine geosciences Invito a presentare proposte Data not available Meccanismo di finanziamento CSC - Cost-sharing contracts Coordinatore Christian-Albrechts Universität Kiel Contributo UE Nessun dato Indirizzo Wischhofstraße 1-3 24148 Kiel Germania Mostra sulla mappa Costo totale Nessun dato Partecipanti (7) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto Geco Pratla Norvegia Contributo UE Nessun dato Indirizzo 4001 Stavanger Mostra sulla mappa Costo totale Nessun dato Imperial College of Science, Technology and Medicine Regno Unito Contributo UE Nessun dato Indirizzo Prince Consort Road SW7 2BP London Mostra sulla mappa Costo totale Nessun dato Public Petroleum Corporation AE Grecia Contributo UE Nessun dato Indirizzo 199,Kifissias Avenue 15124 Athens Mostra sulla mappa Costo totale Nessun dato UNIVERSITY OF BIRMINGHAM Regno Unito Contributo UE Nessun dato Indirizzo Edgbaston B15 2TT BIRMINGHAM Mostra sulla mappa Costo totale Nessun dato Università degli Studi di Trieste Italia Contributo UE Nessun dato Indirizzo Via Valerio 10 34127 Trieste Mostra sulla mappa Costo totale Nessun dato Université de Strasbourg I (Université Louis Pasteur) Francia Contributo UE Nessun dato Indirizzo 5 rue René Descartes 67084 Strasbourg Mostra sulla mappa Costo totale Nessun dato École Normale Supérieure Francia Contributo UE Nessun dato Indirizzo 24 rue Lhomond 75231 Paris Mostra sulla mappa Costo totale Nessun dato