Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 615 résultats pour les termes de recherche: Acidification des océans

Affichage des résultats: 201 à 210

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Using cognitive maps to investigate fishers' ecosystem objectives and knowledge

This paper presents a survey of French Eastern English Channel fishers' observations of the past and current state of the marine ecosystem and their wishes for the future, as a first step towards formulating management objectives. Twenty-nine semi-di...

Activité magmatique, tectonique et hydrothermale actuelle sur la Dorsale Est Pacifique entre17°-et 19°S(campagne NAUDUR)

The submersible-study of four segments of the East Pacific Rise between 17 degrees and 18 degrees 40'S, where the spreading rate is greater than 150 mm/a, allows us to confirm the variability of the accretion processes. The segment between 17 degrees...

Activité tectonique, magmatique et hydrothermale autour des triples jonctions de 16°50'S-173°30'E et de l6°30'S-l76°10E dans le bassin nord fidji...

The aim of the HYFIFLUX-SONNE 99 cruise was the geological, biological and chemical study of the 2 triple-junctions characterizing the oceanic accretion in the North Fiji Basin. Multibeam bathymetric coverage, in situ observations and sampling confir...

Les énergies marines renouvelables : qu'est-ce que c'est ? Quelles perspectives en Nouvelle-Calédonie.

This text presents a review of the various technologies for exploitation of renewable marine energy resources. Il exposes the solutions offered by tide and currents, swell and waves, the marine wind energy, the Ocean Thermal Energy, the osmotic energ...

The Voyage of H.M.S. Challenger 1873-1876. Narrative Vol. I. First Part. Chapter I

The deep-sea investigations conducted on board H.M. Ships " Lightning," "Porcupine," and" Shearwater," in the years 1868, 1869, 1870 and 1871, and the subsequent correspondence between the Lords Commissioners of the Admiralty, the Council of the Roya...

Biomasse phytoplanctonique NIMBUS 7/CZCS dans les archipels de Nouvelle Calédonie et du Vanuatu = Phytoplanctonic biomass from NIMBUS 7/CZCS in New C...

L'étude des effets d'îles sur la richesse en phytoplancton océanique dans le Pacifique tropical Sud Ouest a déjà été abordée par les chercheurs ORSTOM, tout d'abord de façon statistique et à grande échelle dans tout le PTSO, avec les donnÃ...

ENSO signals in the vicinity of New Caledonia, South Western Pacific

Data collected in an area enclosing New Caledonia are analysed both for the open ocean (17 degrees S-27 degrees S, 169 degrees E-170 degrees E; 1972-1992) and for one point in its lagoon (1967-1993), in order to improve our knowledge of the regional ...

First report of Quinqueloculina carinatatriata (Wiesner, 1923) (foraminifera) along the french atlantic coast (Marennes-Oléron bay and ile de Ré)

Large populations of the living benthic foraminifera Quinqueloculina carinatastriata (Wiesner, 1923) are reported for the first time from intertidal mudflats of the French Atlantic coast (Marennes-Oléron Bay and Ile de Ré). Maximum abundance of liv...

Adult and larval traits as determinants of geographic range size among tropical reef fishes

Most marine organisms disperse via ocean currents as larvae, so it is often assumed that larval-stage duration is the primary determinant of geographic range size. However, empirical tests of this relationship have yielded mixed results, and alternat...

Les fonds marins vus de l'espace

This text is focused on the popularization of the general public, edited in a magazine connected to the sea. It explicits, in first part, all the factors which make that the surface of the sea is not horizontal. In second part are introduced the prin...