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	Provedor de dados ArchiMer (2) Autor Kennett, James P. (2) Behl, Richard J. (1) Hill, Tessa M. (1) Ikehara, Ken (1) Moffitt, Sarah E. (1) Ohkushi, Ken'Ichi (1) Ohkushi, Kenichi (1) Shibahara, Akihiko (1) Mais... Palavra-chave Benthic foraminifera (1) Biological production (1) Deglacial (1) Holocene (1) Last glacial (1) Oyashio (1) Paleoceanography (1) Mais... Tipo do documento Text (2) Ano 2014 (1) 2007 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Vertical oxygen minimum zone oscillations since 20 ka in Santa Barbara Basin: A benthic foraminiferal community perspective ArchiMer Moffitt, Sarah E.; Hill, Tessa M.; Ohkushi, Kenichi; Kennett, James P.; Behl, Richard J.. Here we present a history of deoxygenation of upper intermediate waters during the last deglaciation from Santa Barbara Basin (SBB), based on quantitative analyses of benthic foraminiferal assemblages, from a new shallow piston core above basin sill depth (MV0811-15JC, 418 m), and previously described sequences in the deeper basin (MD02-2504, 481 m and MD02-2503, 570 m). We document a 152 m depth transect of benthic foraminiferal assemblages to extract changing community structure (density, diversity, and evenness) and improve paleoenvironmental interpretation of late Quaternary vertical oscillations in the upper boundary of the oxygen minimum zone (OMZ). Close interaction between changes in open margin OMZ and that of the restricted SBB is documented... Tipo: Text Ano: 2014 URL: https://archimer.ifremer.fr/doc/00291/40226/38698.pdf Late Quaternary changes in intermediate water oxygenation and oxygen minimum zone, northern Japan: A benthic foraminiferal perspective ArchiMer Shibahara, Akihiko; Ohkushi, Ken'Ichi; Kennett, James P.; Ikehara, Ken. A strong oxygen minimum zone (OMZ) currently exists at upper intermediate water depths on the northern Japanese margin, NW Pacific. The OMZ results largely from a combination of high surface water productivity and poor ventilation of upper intermediate waters. We investigated late Quaternary history ( last 34 kyr) of ocean floor oxygenation and the OMZ using quantitative changes in benthic foraminiferal assemblages in three sediment cores taken from the continental slope off Shimokita Peninsula and Tokachi, northern Japan, at water depths between 975 and 1363 m. These cores are well located within the present-day OMZ, a region of high surface water productivity, and in close proximity to the source region of North Pacific Intermediate Water. Late... Tipo: Text Palavras-chave: Benthic foraminifera; Paleoceanography; Oyashio; Biological production; Last glacial; Deglacial; Holocene. Ano: 2007 URL: https://archimer.ifremer.fr/doc/00236/34733/33182.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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