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Prou Jean, Conche Nelly, Taillade Sylvie
Ce rapport synthétise les communications faites lors des "journées conchylicoles" sur les travaux scientifiques de l'Ifremer en soutien aux activités conchylicoles
2003-03.   Rapport
Ce rapport synthétise les communications faites lors des "Journées conchylicoles", sur les travaux scientifiques de l'Ifremer en soutien aux activités conchylicoles
1997.   Rapport
Ce rapport synthétise les communications présentées lors des "journées conchylicoles" sur les travaux scientifiques de l'Ifremer en soutien aux activités conchylicoles.
1999-03.   Rapport
The krlging technique Is now employed ln more and more fields: mlnlng (Journel. 1977), hydrology (Delhomme, 197B; Shamsi et al" 1988; Dingman et al" 1988), fishery (Conan, 1989) and ecology (Robertson, 1987; Schotzko and O'Keeffe, 1989, 1990). Recent developments of the mathematlcal theory tend to extend the number of applications where Il may be used. Baslcally defined for the case of a statlonary spatial process, It now encompasses more general processes assuming less and less strong [...]
1991.   Rapport de contrat
In oyster production area the determination of the stock, estimation of mortality and growth rates are determinant for knowledge of the fishery. Growth models can be used to predict the time to reach marketable size (76 mm in Chesapeake Bay). They are also important in term of management, when they can predict the future value of the stock (Askew, 1978). Oyster growth models can be built by analysing growth of natural oysters but absolute age is orten unknown. Many authors report growth data in [...]
1991.   Rapport de contrat
Prou Jean, Heral Maurice, Goulletquer Philippe, Forget Maïté, Bougrier Serge, Razet Daniel
The project of cultivation of oyster has been designed to evaluate the growth rate, the mortality, the reproductive effort, production and biochemical composition of the oyster function of the density and the depth. This plan was intended: - to build model of growth rate, - to demonstrate the action of the different parameters on growth rate (temperature, food effect...), - to evaluate the density effect to see if the available food could be a limiting factor, - to estimate the effect of the [...]
1991.   Rapport de contrat
Daoud Mohamed A., Le Gall Bernard, Maury Rene, Rolet Joel, Huchon Philippe, Guillou Herve
The Tadjoura rift forms the westernmost edge of the westerly propagating Sheba ridge, between Arabia and Somalia, as it enters into the Afar depression. From structural and remote sensing data sets, the Tadjoura rift is interpreted as an asymmetrical south facing half-graben, about 40 km wide, dominated by a large boundary fault zone to the north. It is partially filled up by the 1-3 Myr old Gulf Basalts which onlapped the older Somali Basalts along its shallower southern flexural margin. The [...]
2011-01.   Tectonics
Watremez Louise, Leroy Sylvie, Rouzo Stephane, D'Acremont E., Unternehr P., Ebinger C., Lucazeau F., Al-Lazki A.
P>The wide-angle seismic (WAS) and gravity data of the Encens survey allow us to determine the deep crustal structure of the north-eastern Gulf of Aden non-volcanic passive margin. The Gulf of Aden is a young oceanic basin that began to open at least 17.6 Ma ago. Its current geometry shows first- and second-order segmentation: our study focusses on the Ashawq-Salalah second-order segment, between Alula-Fartak and Socotra-Hadbeen fracture zones. Modelling of the WAS and gravity data (three [...]
2011-02.   Geophysical Journal International
Ioualalen Mansour, Ratzov G., Collot Jean-Yves, Sanclemente E.
P>Shelf promontories exhibit very specific bathymetric features with regards to tsunamis. Because of their submerged cape morphology, a potential tsunami generated seawards of the promontory will exhibit a specific mode of propagation and coastal impact. To identify this peculiar tsunami signature, the Atacames Promontory, Ecuador, was chosen as a case study (another example is the shelf of the Nile delta, Egypt). The area is tectonically very active, hosts earthquakes among the most powerful [...]
2011-02.   Geophysical Journal International
Lebas E., Le Friant A., Boudon G., Watt S. F. L., Talling P. J., Feuillet Nathalie, Deplus Christine, Berndt C., Vardy M. E.
New high-resolution multichannel seismic data (GWADASEIS-2009 and JC45/46-2010 cruises; 72 and 60 channels, respectively) combined with previous data (AGUADOMAR-1999 and CARAVAL-2002; 6 and 24 channels, respectively) allow a detailed investigation of mass-wasting processes around the volcanic island of Montserrat in the Lesser Antilles. Seven submarine deposits have sources on the flanks of Montserrat, while three are related to the nearby Kahouanne submarine volcanoes. The most voluminous [...]
2011-05.   Geochemistry Geophysics Geosystems
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