|
|
|
|
|
| Cortijo, E; Lehman, S; Keigwin, L; Chapman, M; Paillard, D; Labeyrie, L. |
| Eight deep-sea sediment cores from the North Atlantic Ocean ranging from 31 degrees to 72 degrees N are studied to reconstruct the meridional gradients in surface hydrographic conditions during the interval of minimum ice volume within the last interglacial period. Using benthic foraminiferal delta(18)O measurements and estimates of Sea Surface Temperature (SST) and Sea Surface Salinity (SSS), we show that summer SSTs and SSSs decreased gradually during the interval of minimum ice volume at high-latitude sites (52 degrees-72 degrees N) whereas they were stable or increased during the same time period at low-latitude sites (31 degrees-41 degrees N). This increase in meridional gradients of SSTs and SSSs may have been due to changes in the latitudinal... |
| Tipo: Text |
|
| Ano: 1999 |
URL: https://archimer.ifremer.fr/doc/00240/35076/34550.pdf |
| |
|
|
| Pflaumann, U; Sarnthein, M; Chapman, M; D'Abreu, L; Funnell, B; Huels, M; Kiefer, T; Maslin, M; Schulz, H; Swallow, J; Van Kreveld, S; Vautravers, M; Vogelsang, E; Weinelt, M. |
| The response of the tropical ocean to global climate change and the extent of sea ice in the glacial nordic seas belong to the great controversies in paleoclimatology. Our new reconstruction of peak glacial sea surface temperatures (SSTs) in the Atlantic is based on census counts of planktic foraminifera, using the Maximum Similarity Technique Version 28 (SIMMAX-28) modern analog technique with 947 modern analog samples and 119 well-dated sediment cores. Our study compares two slightly different scenarios of the Last Glacial Maximum (LGM), the Environmental Processes of the Ice Age: Land, Oceans, Glaciers (EPILOG), and Glacial Atlantic Ocean Mapping (GLAMAP 2000) time slices. The comparison shows that the maximum LGM cooling in the Southern Hemisphere... |
| Tipo: Text |
Palavras-chave: Last Glacial Maximum; Atlantic sea-surface temperatures; Seasonality; Sea ice cover; Glacial cooling near equator; Glacial upwelling intensity. |
| Ano: 2003 |
URL: https://archimer.ifremer.fr/doc/00225/33668/32070.pdf |
| |
|
|
|
