TY  - JOUR
A1  - Förster, Verena
A1  - Junginger, Annett
A1  - Langkamp, Oliver
A1  - Gebru, Tsige
A1  - Asrat, Asfawossen
A1  - Umer, Mohammed
A1  - Lamb, Henry F.
A1  - Wennrich, Volker
A1  - Rethemeyer, Janet
A1  - Nowaczyk, Norbert
A1  - Trauth, Martin H.
A1  - Schäbitz, Frank
T1  - Climatic change recorded in the sediments of the Chew Bahir basin, southern Ethiopia, during the last 45,000 years
JF  - Quaternary international : the journal of the International Union for Quaternary Research
N2  - East African paleoenvironments are highly variable, marked by extreme fluctuations in moisture availability, which has far-reaching implications for the origin, evolution and dispersal of Homo sapiens in and beyond the region. This paper presents results from a pilot core from the Chew Bahir basin in southern Ethiopia that records the climatic history of the past 45 ka, with emphasis on the African Humid Period (AHP, similar to 15-5 ka calBP). Geochemical, physical and biological indicators show that Chew Bahir responded to climatic fluctuations on millennial to centennial timescales, and to the precessional cycle, since the Last Glacial Maximum. Potassium content of the sediment appears to be a reliable proxy for aridity, showing that Chew Bahir reacted to the insolation-controlled humidity increase of the AHP with a remarkably abrupt onset and a gradual termination, framing a sharply defined arid phase (similar to 12.8-11.6 ka calBP) corresponding to the Younger Dryas chronozone. The Chew Bahir record correlates well with low- and high-latitude paleoclimate records, demonstrating that the site responded to regional and global climate changes.
Y1  - 2012
U6  - https://doi.org/10.1016/j.quaint.2012.06.028
SN  - 1040-6182
VL  - 274
IS  - 19
SP  - 25
EP  - 37
PB  - Elsevier
CY  - Oxford
ER  -