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Registros recuperados: 7
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A 36 ka environmental record in the southern tropics : lake Tritrivakely (Madagascar) IRD
Gasse, F.; Cortijo, E.; Disnar, J.R.; Ferry, Luc; Gibert, E.; Kissel, C.; Laggoun-Defarge, F.; Lallier-Vergès, E.; Miskovsky, J.C.; Ratsimbazafy, B.; Ranaivo, F.; Robison, L.; Tucholka, P.; Saos, Jean-Luc; Sifeddine, Abdelfettah; Taieb, M.; Van Campo, E.; Williamson, D..
Tipo: Text Palavras-chave: QUATERNAIRE; PALEOCLIMAT; PALEOENVIRONNEMENT; SEDIMENTATION LACUSTRE.
Ano: 1994 URL: http://www.documentation.ird.fr/hor/fdi:42480
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An ocean-ice coupled response during the last glacial: a view from a marine isotopic stage 3 record south of the Faeroe Shetland Gateway ArchiMer
Zumaque, J.; Eynaud, Frederique; Zaragosi, S.; Marret, F.; Matsuzaki, K. M.; Kissel, C.; Roche, D. M.; Malaize, B.; Michel, E.; Billy, I.; Richter, T.; Palis, E..
The rapid climatic variability characterising the Marine Isotopic Stage (MIS) 3 (similar to 60-30 cal ka BP) provides key issues to understand the atmosphere-ocean-cryosphere dynamics. Here we investigate the response of sea-surface paleoenvironments to the MIS3 climatic variability through the study of a high resolution oceanic sedimentological archive (core MD99-2281, 60 degrees 21' N; 09 degrees 27' W; 1197m water depth), retrieved during the MD114-IMAGES (International Marine Global Change Study) cruise from the southern part of the Faeroe Bank. This sector was under the proximal influence of European ice sheets (Fennoscandian Ice Sheet to the East, British Irish Ice Sheet to the South) during the last glacial and thus probably responded to the MIS3...
Tipo: Text
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00139/25060/23168.pdf
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Magnetic Fingerprints of Modern Sediments in the South China Sea Resulting from Source-to-Sink Processes ArchiMer
Kissel, C.; Sarnthein, M.; Laj, C.; Wang, P. X.; Wandres, C.; Egli, R..
More than 650 million tons/year of fluvial sediment are delivered from continental regions into the South China Sea (SCS). Previous studies have shown that the composition of the magnetic fraction of riverine sediments drained into the SCS is significantly variable from north to south. On the basis of this evidence, we now examine a full set of magnetic properties for a number of core‐tops taken at water depth comprised mostly between 800 and 3500 m. Room‐temperature magnetic parameters and thermal spectra are used to obtain information about the concentration and mineralogical magnetic composition. Spatial changes are observed in the relative proportion of magnetite and hematite with an increase of the latter toward the south, similarly to the observation...
Tipo: Text Palavras-chave: South China Sea; Magnetic mineralogy; Marine sediments.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00443/55502/57048.pdf
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Middle-late Pleistocene deep water circulation in the southwest subtropical Pacific ArchiMer
Russon, T.; Elliot, M.; Kissel, C.; Cabioch, G.; De Deckker, P.; Correge, T..
The modern delta(13)C(DIC) distribution in southwest subtropical Pacific deep waters is consistent with a regional mixing regime between water masses of open Pacific Ocean and Tasman Sea origin. This mixing regime is reconstructed across the middle-late Pleistocene using a record of benthic foraminiferal delta(13)C in a sediment core from the New Caledonia Trough. The relative influence on the mixing regime from open Pacific Ocean deep waters is seen to be significantly reduced during glacial in comparison to interglacial stages over the past 1.1 Ma. The spatial delta(13)C gradient in the Southern Ocean between deep waters entering the Tasman Sea and the open Pacific Ocean is shown to be consequently greater during glacial than interglacial stages but was...
Tipo: Text
Ano: 2009 URL: https://archimer.ifremer.fr/doc/00144/25522/23666.pdf
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Millennial-scale sea surface temperature and Patagonian Ice Sheet changes off southernmost Chile (53 degrees S) over the past similar to 60 kyr ArchiMer
Caniupan, M.; Lamy, F.; Lange, C. B.; Kaiser, J.; Arz, H.; Kilian, R.; Baeza Urrea, O.; Aracena, C.; Hebbeln, D.; Kissel, C.; Laj, C.; Mollenhauer, G.; Tiedemann, R..
Glacial millennial-scale paleoceanographic changes in the Southeast Pacific and the adjacent Southern Ocean are poorly known due to the scarcity of well-dated and high resolution sediment records. Here we present new surface water records from sediment core MD07-3128 recovered at 53 degrees S off the Pacific entrance of the Strait of Magellan. The alkenone-derived sea surface temperature (SST) record reveals a very strong warming of ca. 8 C over the last Termination and substantial millennial-scale variability in the glacial section largely consistent with our planktonic foraminifera oxygen isotope (delta(18)O) record of Neogloboquadrina pachyderma (sin.). The timing and structure of the Termination and some of the millennial-scale SST fluctuations are...
Tipo: Text Palavras-chave: Patagonian Ice Sheet; Alkenones; Ice rafted debris; Millennial-scale changes; Southeast Pacific.
Ano: 2011 URL: https://archimer.ifremer.fr/doc/00214/32516/31000.pdf
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Paleomagnetic study of upper cretaceous and tertiary formations from the central Andes (Southern Ecuador and Peru) IRD
Kissel, C.; Laj, C.; Mitouard, P.; Macedo, O.; Roperch, Pierrick; Surmont, J..
Tipo: Text Palavras-chave: PALEOMAGNETISME; CRETACE; CENOZOIQUE; GEODYNAMIQUE; TECTONIQUE; ROTATION.
Ano: 1990 URL: http://www.documentation.ird.fr/hor/fdi:30991
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Variations of the ACC-CDW during MIS3 traced by magnetic grain deposition in midlatitude South Indian Ocean cores: Connections with the northern hemisphere and with central Antarctica ArchiMer
Mazaud, A.; Kissel, C.; Laj, C.; Sicre, M. A.; Michel, E.; Turon, J. L..
We examine the magnetic mineral deposition in three cores located at midlatitude sites in the South Indian Ocean, in an area where sediment eroded from the Kerguelen-Crozet plateau and transported by the marine currents, principally the Antarctic Circum Current, accumulates at a high sedimentation rate. We focus on Marine Isotopic Stage 3, characterized by large climatic fluctuations at northern latitudes, and compare the obtained records to the climatic records at Byrd ( Antarctica) and Summit (GISP2, Greenland) and to the North Atlantic Deep Water variations in the North Atlantic. Magnetic mineral deposition at the studied sites exhibits a profile with maxima at the time of Heinrich events H4 and H5, which suggests a strong Antarctic Circum Current when...
Tipo: Text Palavras-chave: Paleoceanography; South; Indian; Ocean; Paleoclimatology and paleoceanography; Environmental magnetism; Interhemispheric phasing.
Ano: 2007 URL: https://archimer.ifremer.fr/doc/00235/34612/32954.pdf
Registros recuperados: 7
Primeira ... 1 ... Última
 

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