Enhanced aridity and atmospheric high-pressure stability over the western Mediterranean during the North Atlantic cold events of the past 50 k.y.

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doi: 10.1130/0091-7613(2002)030<0863:EAAAHP>2.0.CO;2
Author(s): Combourieu-Nebout, N.; Turon, J. L.; Zahn, R.; Capotondi, L.; Londeix, L.; Pahnke, K.
Author Affiliation(s): Primary:
Laboratoire des Sciences du Climat et l'Environnement, Gif sur Yvette, France
Université Bordeaux I, France
Universidad de Barcelona, Spain
Istituto per la Geologia Marina, Italy
Cardiff University, United Kingdom
Volume Title: Geology (Boulder)
Source: Geology (Boulder), 30(10), p.863-866. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0091-7613 CODEN: GLGYBA
Note: In English. Lab. Sci. Clim. et Environ., Contrib. No. 0780. 38 refs.; illus., incl. 1 table, sketch map
Summary: Multiproxy paleoenvironmental records (pollen and planktonic isotope) from Ocean Drilling Program Site 976 (Alboran Sea) document rapid ocean and climate variations during the last glacial that follow the Dansgaard-Oeschger climate oscillations seen in the Greenland ice core records, thus suggesting a close link of the Mediterranean climate swings with North Atlantic climates. Continental conditions rapidly oscillated through cold-arid and warm-wet conditions in the course of stadial-interstadial climate jumps. At the time of Heinrich events, i.e., maximum meltwater flux to the North Atlantic, western Mediterranean marine microflora and microfauna show rapid cooling correlated with increasing continental dryness. Enhanced aridity conceivably points to prolonged wintertime stability of atmospheric high-pressure systems over the southwestern Mediterranean in conjunction with cooling of the North Atlantic.
Year of Publication: 2002
Research Program: ODP Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Absolute age; Alboran Sea; Arid environment; Atlantic Ocean; Biostratigraphy; C-14; Carbon; Cenozoic; Cooling; Correlation; Dansgaard-Oeschger cycles; Dates; Foraminifera; Globigerina; Globigerina bulloides; Globigerinacea; Globigerinidae; Heinrich events; Invertebrata; Isotopes; Last glacial maximum; Leg 161; Marine sediments; Mediterranean Sea; Mediterranean region; Meltwater; Microfossils; Miospores; Neogloboquadrina; Neogloboquadrina pachyderma; North Atlantic; ODP Site 976; Ocean Drilling Program; Paleo-oceanography; Paleoatmosphere; Paleoclimatology; Palynomorphs; Pollen; Protista; Quaternary; Radioactive isotopes; Rotaliina; Sediments; Terrestrial environment; Upper Quaternary; West Mediterranean
Coordinates: N361219 N361219 W0041845 W0041845
Record ID: 2002075299
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