Consulta: creatorFacets:"Dupont, J"
Registros recuperados: 7
Data/hora: 27/07/2024 02:56:38

Campagne Seapso 4: Etude morphostructurale de la ride de Valufa dans le bassin de Lau
Provedor de dados: 5
Autores: Foucher, J P; Bouysse, P; Davagnier, M; Dupont, J; Eissen, J P; Fouquet, Y; Gueneley, S; Harmegnies, F; Lapouille, A.
The Lau Basin lies between the Lau and Tonga ridges and extends over more than 1000 km. Its width decreases from 300 km near 16 degree S to less than 100 km near 24S. It is an actively spreading oceanic back-arc basin created in the Plio-Pleistocene the Tonga Trench. The part of the Valu Fa ridge North of 22 degree S was investigated during the Seapso 4 cruise of R/V Jean Charcot in Jan 1986 and complementary data were obtained during the Papnoum transit (Apr 1987). The techniques used included multibeam bathymetry, single-channel seismic reflection, magnetic and gravity field measurements.
Tipo: Text
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00268/37933/36014.pdf

Conditions hydrobiologiques au large du Cap Gris-Nez (France) - premiers résultats
Provedor de dados: 5
Autores: Brylinski, Jm; Dupont, J; Bentley, D.
Tipo: Text
Ano: 1984
URL: http://archimer.ifremer.fr/doc/00131/24213/22206.pdf

Contribution de l''etude des suspensions a la comprehension des mecanismes hydrosedimentaires estuariens et littoraux en Manche centrale et orientale
Provedor de dados: 5
Autores: Dupont, J; Lafite, R; Lamboy, M.
Satellite imagery shows the turbid and thermal plume of the Seine River and littoral zone of Picardie and Haute-Normandie. The suspensions have been analysed in conformity with a strategy elaborated in 1985 by the authors. In this macrotidal coastal environment they have attempted to draw the dynamic specificities and the material characteristics.
Tipo: Text
Palavras-chave: Estuarine front; Harbours; Coastal zone; Estuaries; Marine environment; Composition; Particle concentration; Granulometry; Hydrodynamics; River plumes; Suspended particulate matter.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1277.pdf

Effet d'un effluent de station d'épuration sur la survie et l'état physiologique d'Escherichia coli et salmonella Manhattan en eau de mer
Provedor de dados: 5
Autores: Dupont, J; Kevorkian, O.
Tipo: Text
Ano: 1994
URL: http://archimer.ifremer.fr/doc/00041/15208/12536.pdf

Effets de la subduction de la ride le sur l'arc des Tonga-Kermadec
Provedor de dados: 5
Autores: Pelletier, B; Dupont, J.
The Louisville Ridge, a hotspot chain, obliquely subducts at the Tonga-Kermadec consuming plate boundary (Southwest Pacific). This ridge has swept the Tonga Trench and the ridge-trench junction point is rapidly (at least 10 cm per year) migrating southward along the Kermadec trench. Results from a comparative morphological study between the Kermadec and Tonga margins, and from the Seapso 5 seabeam survey around the ridge-trench junction consider the effects of the subduction of an oblique ridge on an active margin. Underplating of material scraped and pushed in the front of the ridge could be responsible for the high-standing position of the Tonga platform in the prolongation of the Kermadec active volcanic line.
Tipo: Text
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00268/37904/35985.pdf

Impact biosedimentologique d'amenagements portuaires en estuaire de Seine
Provedor de dados: 5
Autores: Desprez, M; Dupont, J.
Many harbour installations have reduced the intertidal zone and involved estuary choking by marine sediments. In 1980, weirs were built in dikes of navigation channels. This study strikes the balance of their impact on estuarine biofacies and points out indicator species for the study of biological impact of environmental design.
Tipo: Text
Palavras-chave: Indicator species; Biofacies; Estuarine sedimentation; Benthos; Port installations; Environmental impact; Coastal zone management.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1314.pdf

Importance et role du materiel organique vivant et inerte dans les suspensions de la Baie de Seine
Provedor de dados: 5
Autores: Dupont, J; Lafite, R.
Living and inert organic matter take an important place inside suspensions in Seine Bay. There particulate matter and the organo-mineral particles can induce granulometric modes, which constitute a determinant component for dynamics characterizing of suspensions. Organic fraction, in particular, plankton (diatoms and zooplankton) is a main factor in open sea which can concentrate when coming into contact with mass water fronts. Organo-mineral aggregates are present in all estuaries. Importance and action of this organic particulate matter are studied for a best knowledge of this ecosystem.
Tipo: Text
Palavras-chave: Zonal distribution; Estuaries; Species diversity; Plankton; Suspended inorganic matter; Sedimentation; Hydrodynamics; Suspended organic matter.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1278.pdf