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	Provedor de dados ArchiMer (2) Autor Agusti, S (1) Aslanian, Daniel (1) Duarte, Cm (1) Labails, Cinthia (1) Olivet, Jean-louis (1) Roest, Walter (1) Mais... Palavra-chave Central Atlantic Ocean (2) Chlorophyll (1) Chlorophylle (1) Fracture zones (1) Mesozoic reversals (1) Océan Atlantique central (1) Phytoplancton (1) Phytoplankton (1) Plate reconstructions (1) Spreading asymmetry (1) Stabilité verticale (1) Volcanism (1) Water column stability (1) Mais... Tipo do documento Text (2) Ano 2010 (1) 1999 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última An alternative early opening scenario for the Central Atlantic Ocean ArchiMer Labails, Cinthia; Olivet, Jean-louis; Aslanian, Daniel; Roest, Walter. The opening of the Central Atlantic Ocean basin that separated North America from northwest Africa is well documented and assumed to have started during the Late Jurassic. However, the early evolution and the initial breakup history of Pangaea are still debated: most of the existing models are based on one or multiple ridge jumps at the Middle Jurassic leaving the oldest crust on the American side, between the East Coast Magnetic Anomaly (ECMA) and the Blake Spur Magnetic Anomaly (BSMA). According to these hypotheses, the BSMA represents the limit of the initial basin and the footprint subsequent to the ridge jump. Consequently, the evolution of the northwest African margin is widely different from the northeast American margin. However, this setting is in... Tipo: Text Palavras-chave: Central Atlantic Ocean; Mesozoic reversals; Volcanism; Fracture zones; Spreading asymmetry; Plate reconstructions. Ano: 2010 URL: http://archimer.ifremer.fr/doc/00014/12533/17926.pdf Phytoplankton chlorophyll a distribution and water column stability in the central Atlantic Ocean ArchiMer Agusti, S; Duarte, Cm. The relationship between the vertical distribution of phytoplankton chlorophyll a and the physical structure of the upper central Atlantic Ocean was investigated based on results from a cruise across the tropical Atlantic (27 degrees N to 36 degrees S). The thermocline was very sharp and shallow in the northern part of the transect, off the coast of Mauritania and Senegal, and deepened progressively to reach > 150 m deep between 20 degrees S and 30 degrees S. There was a deep chl a maximum associated with the thermocline throughout the transect, reaching chl a concentrations up to 50 fold greater than those in surface waters. The chl a concentration was greatest off the NW African coast and declined towards the south, parallel to a progressive deepening... Tipo: Text Palavras-chave: Chlorophylle; Phytoplancton; Stabilité verticale; Océan Atlantique central; Chlorophyll; Phytoplankton; Water column stability; Central Atlantic Ocean. Ano: 1999 URL: http://archimer.ifremer.fr/doc/00325/43620/43311.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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