202 research outputs found
Variability of the North Atlantic thermohaline circulation during the last interglacial period
Studies of natural climate variability are essential for evaluating its future evolution. Greenland ice cores suggest that the modern warm period (the Holocene) has been relatively stable for the past 9,000 years. Much less is known about other warm interglacial periods, which comprise less than 10% of the climate record during the past 2.5 million years. Here we present high-resolution ocean sediment records of surface and deep-water variables from the Bermuda Rise spanning the last interglacial period, about 118,000–127,000 years ago. In general, deep-water chemical changes are coincident with transitions in surface climate at this site. The records do not show any substantial fluctuations relative to the much higher variability observed during the preceding and subsequent cool climates. The relatively stable interglacial period begins and ends with abrupt changes in deep-water flow. We estimate, using ^(230)Th measurements to constrain the chronology, that transitions occur in less than 400 years
Climate variability during the last deglaciation in north-western Iberian margin and adjacent landmasses
Climate variability during the last glacial-interglacial transition and Holocene in north-western Iberian margin and adjacent landmasses
Correlation directe de la variabilité climatique ocean-continent des derniers 25.000 ans a partir de l'analyse multi-proxy d'une carotte marine de la marge Nord-Ouest Ibérique
Climate variability of the last 25.000 years in and off Iberia : direct land-sea correlation from the multiproxy analysis of a Northwestern Iberian Margin deep-sea core
Oceanic biological productivity changes off Iberia during MIS 5 and its relation to the Atlantic Meridional Overturning Circulation [Abstract]
Open oceanic productivity changes at mid-latitudes during interglacials and its relation to the Atlantic Meridional Overturning Circulation [Abstract]
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