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| Vautravers, Maryline J.; Shackleton, Nicholas J.. |
| The marine isotopic stage 3 (MIS3) at Ocean Drilling Program (ODP) Site 1060 (Gulf Stream) shows both sharp onset and end of interstadials, the existence of very short lived warm events during stadials, and points to differences in detail between the sea surface temperature (SST) record from the western North Atlantic and the atmospheric temperature record inferred from delta O-18 in Greenland ice. Investigating MIS3 and obtaining comparable data from other locations appears crucial. The eastern Atlantic provides well-documented records of climate changes. We have selected a core from off Portugal and use it to examine Dansgaard/Oeschger events (D/O) at centennial-scale resolution (139 years on average between two data points). We have obtained a faunal... |
| Tipo: Text |
Palavras-chave: SST; Planktonic foraminifera; Last glacial. |
| Ano: 2006 |
URL: https://archimer.ifremer.fr/doc/00234/34548/33352.pdf |
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| Paterne, Martine; Kallel, Nejib; Labeyrie, Laurent; Vautravers, Maryline J.; Duplessy, Jean-claude; Rossignol-strick, Martine; Cortijo, Elsa; Arnold, Maurice; Fontugne, Michel. |
| The Mediterranean Sea hydrology at the time of the Heinrich formation in the North Atlantic Ocean was analyzed by comparing sea surface temperatures (SSTs) and oxygen isotope composition of seawater (delta w) changes during the past 75 kyr in two marine cores. These were compared to the palynological variations derived in the Mediterranean Sea core. During the last glacial the two oceanic SST records show similar and synchronous patterns, with several long-term cooling periods, ending by abrupt SST increases. At the time of the Heinrich events, cold SSTs and low salinity prevailed in the Mediterranean Sea. The freshwater budget was similar to the modern one, permitting the presence of a mixed forest on the Mediterranean borderlands. The post-Heinrich... |
| Tipo: Text |
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| Ano: 1999 |
URL: https://archimer.ifremer.fr/doc/00239/35050/36799.pdf |
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