Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados ArchiMer (3) Autor Mudelsee, Manfred (3) Balmer, Sven (1) De Deckker, Patrick (1) Esat, Tezer M. (1) Felis, Thomas (1) Gagan, Michael K. (1) Grootes, Pieter M. (1) Holbourn, Ann (1) Inoue, Mayuri (1) Kuhnt, Wolfgang (1) Linsley, Braddock K. (1) Mcgregor, Helen V. (1) Opdyke, Bradley (1) Potts, Donald C. (1) Roehl, Ursula (1) Sarnthein, Michael (1) Suzuki, Atsushi (1) Thomas, Alexander L. (1) Thompson, William G. (1) Tiwari, Manish (1) Mais... Palavra-chave Atlantic paleoceangoraphy (1) C-14 reservoir ages (1) Data-model comparison (1) Glacial-to-deglacial variability (1) Surface water hydrography (1) Tipo do documento Text (3) Ano 2016 (1) 2015 (1) 2014 (1) País France (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Intensification of the meridional temperature gradient in the Great Barrier Reef following the Last Glacial Maximum ArchiMer Felis, Thomas; Mcgregor, Helen V.; Linsley, Braddock K.; Tudhope, Alexander W.; Gagan, Michael K.; Suzuki, Atsushi; Inoue, Mayuri; Thomas, Alexander L.; Esat, Tezer M.; Thompson, William G.; Tiwari, Manish; Potts, Donald C.; Mudelsee, Manfred; Yokoyama, Yusuke; Webster, Jody M.. Tropical south-western Pacific temperatures are of vital importance to the Great Barrier Reef (GBR), but the role of sea surface temperatures (SSTs) in the growth of the GBR since the Last Glacial Maximum remains largely unknown. Here we present records of Sr/Ca and delta O-18 for Last Glacial Maximum and deglacial corals that show a considerably steeper meridional SST gradient than the present day in the central GBR. We find a 1-2 degrees C larger temperature decrease between 17 degrees and 20 degrees S about 20,000 to 13,000 years ago. The result is best explained by the northward expansion of cooler subtropical waters due to a weakening of the South Pacific gyre and East Australian Current. Our findings indicate that the GBR experienced substantial... Tipo: Text Ano: 2014 URL: https://archimer.ifremer.fr/doc/00290/40136/39239.pdf Refined modeling and 14C plateau tuning reveal consistent patterns of glacial and deglacial 14C reservoir ages of surface waters in low-latitude Atlantic ArchiMer Balmer, Sven; Sarnthein, Michael; Mudelsee, Manfred; Grootes, Pieter M.. Modeling studies predict that changes in radiocarbon (C-14) reservoir ages of surface waters during the last deglacial episode will reflect changes in both atmospheric C-14 concentration and ocean circulation including the Atlantic Meridional Overturning Circulation. Tests of these models require the availability of accurate C-14 reservoir ages in well-dated late Quaternary time series. We here test two models using plateau-tuned C-14 time series in multiple well-placed sediment core age-depth sequences throughout the lower latitudes of the Atlantic Ocean. C-14 age plateau tuning in glacial and deglacial sequences provides accurate calendar year ages that differ by as much as 500-2500years from those based on assumed global reservoir ages around 400years.... Tipo: Text Palavras-chave: C-14 reservoir ages; Atlantic paleoceangoraphy; Surface water hydrography; Glacial-to-deglacial variability; Data-model comparison. Ano: 2016 URL: https://archimer.ifremer.fr/doc/00421/53227/54789.pdf Southern Hemisphere control on Australian monsoon variability during the late deglaciation and Holocene ArchiMer Kuhnt, Wolfgang; Holbourn, Ann; Xu, Jian; Opdyke, Bradley; De Deckker, Patrick; Roehl, Ursula; Mudelsee, Manfred. The evolution of the Australian monsoon in relation to high-latitude temperature fluctuations over the last termination remains highly enigmatic. Here we integrate high-resolution riverine runoff and dust proxy data from X-ray fluorescence scanner measurements in four well-dated sediment cores, forming a NE-SW transect across the Timor Sea. Our records reveal that the development of the Australian monsoon closely followed the deglacial warming history of Antarctica. A minimum in riverine runoff documents dry conditions throughout the region during the Antarctic Cold Reversal (15-12.9 ka). Massive intensification of the monsoon coincided with Southern Hemisphere warming and intensified greenhouse forcing over Australia during the atmospheric CO2 rise at... Tipo: Text Ano: 2015 URL: https://archimer.ifremer.fr/doc/00352/46296/45939.pdf Registros recuperados: 3 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco