TY - JOUR
T1 - Rapid environmental changes in southern Europe during the last glacial period
AU - Allen, Judy R. M.
AU - Brandt, Ute
AU - Brauer, Achim
AU - Hubberten, Hans Wolfgang
AU - Huntley, Brian
AU - Keller, Jörg
AU - Kraml, Michael
AU - Mackensen, Andreas
AU - Mingram, Jens
AU - Negendank, Jörg F.W.
AU - Nowaczyk, Norbert R.
AU - Oberhänsli, Hedi
AU - Watts, William A.
AU - Wulf, Sabine
AU - Zolitschka, Bernd
PY - 1999/8/19
Y1 - 1999/8/19
N2 - Oxygen-isotope records from Greenland ice cores indicate numerous rapid climate fluctuations during the last glacial period. North Atlantic marine sediment cores show comparable variability in sea surface temperature and the deposition of ice-rafted debris. In contrast, very few continental records of this time period provide the temporal resolution and environmental sensitivity necessary to reveal the extent and effects of these environmental fluctuations on the continents. Here we present high-resolution geochemical, physical and pollen data from lake sediments in Italy and from a Mediterranean sediment core, linked by a common tephrochronology. Our lacustrine sequence extends to the past 102,000 years. Many of its features correlate well with the Greenland ice-core records, demonstrating that the closely coupled ocean-atmosphere system of the Northern Hemi sphere during the last glacial extended its influence at least as far as the central Mediterranean region. Numerous vegetation changes were rapid, frequently occurring in less than 200 years, showing that the terrestrial biosphere participated fully in last-glacial climate variability. Earlier than 65,000 years ago, our record shows more climate fluctuations than are apparent in the Greenland ice cores. Together, the multi-proxy data from the continental and marine records reveal differences in the seasonal character of climate during successive interstadials, and provide a step towards determining the underlying mechanisms of the centennial-millennial-scale variability.
AB - Oxygen-isotope records from Greenland ice cores indicate numerous rapid climate fluctuations during the last glacial period. North Atlantic marine sediment cores show comparable variability in sea surface temperature and the deposition of ice-rafted debris. In contrast, very few continental records of this time period provide the temporal resolution and environmental sensitivity necessary to reveal the extent and effects of these environmental fluctuations on the continents. Here we present high-resolution geochemical, physical and pollen data from lake sediments in Italy and from a Mediterranean sediment core, linked by a common tephrochronology. Our lacustrine sequence extends to the past 102,000 years. Many of its features correlate well with the Greenland ice-core records, demonstrating that the closely coupled ocean-atmosphere system of the Northern Hemi sphere during the last glacial extended its influence at least as far as the central Mediterranean region. Numerous vegetation changes were rapid, frequently occurring in less than 200 years, showing that the terrestrial biosphere participated fully in last-glacial climate variability. Earlier than 65,000 years ago, our record shows more climate fluctuations than are apparent in the Greenland ice cores. Together, the multi-proxy data from the continental and marine records reveal differences in the seasonal character of climate during successive interstadials, and provide a step towards determining the underlying mechanisms of the centennial-millennial-scale variability.
UR - http://www.scopus.com/inward/record.url?scp=0033584348&partnerID=8YFLogxK
U2 - 10.1038/23432
DO - 10.1038/23432
M3 - Article
AN - SCOPUS:0033584348
SN - 0028-0836
VL - 400
SP - 740
EP - 743
JO - Nature
JF - Nature
IS - 6746
ER -