Variability of East Asian winter monsoon in Quaternary climatic extremes in North China

Auteurs :
LU, H.
VAN HUISSTEDEN, K.
ZHOU, J.
VANDENBERGHE, J.
LIU, X.
AN, Z.

Description :
In order to examine high-frequency variations of East Asian winter monsoon in Quaternary climatic extremes, two typical loess-paleosol sequences in the Chinese Loess Plateau were investigated : Upper sand and Lower sand have been sampled at Luochuan and Xifeng. The grain size and magnetic susceptibility were measured for all samples. The intensified winter monsoon events show periodicities, with a dominant cycle of approximately 1450 yr. Millenial-scale variations of the winter monsoon may be caused by instability of the westerly jet, which is determined by temperatures differences between the polar and the equatorial regions.


Type de document :
Article de périodique

Source :
Quaternary research, issn : 0033-5894, 2000, vol. 54, n°. 3, p. 321-327, Collation : Illustration, Références bibliographiques : 37 ref.

Date :
2000

Editeur :
Pays édition : Etats-Unis, San Diego, CA, Elsevier