Chinese Science Bulletin

, 46:1942

Abrupt Holocene changes of the Asian monsoon at millennial- and centennial-scales: Evidence from lake sediment document in Minqin Basin, NW China

  • Fahu Chen
  • Yan Zhu
  • Jijun Li
  • Qi Shi
  • Liya Jin
  • B. Wünemann
Papers

DOI: 10.1007/BF02901902

Cite this article as:
Chen, F., Zhu, Y., Li, J. et al. Chin.Sci.Bull. (2001) 46: 1942. doi:10.1007/BF02901902

Abstract

Considerable research is now focusing on abrupt Holocene changes at millennial- and centennial-scales all over the world. This study shows that the changes in the Holocene summer monsoon can be divided into two main periods, based on climatic proxy records of lake sediments from the Sanjiaocheng section located at the NW boundary of the summer monsoon, Gansu Province. The early and middle Holocene was humid with stronger summer monsoon, while the late Holocene is dry with weak summer monsoon. Detailed results also show a series of millennial- and centennial-scale changes in the intensity of the summer monsoon, with a periodicity of {dy1600} years during the whole Holocene, and with a periodicity of 800 years during the early Holocene. Ten dry events during the Holocene are associated with the weakening of the summer monsoon. These rapid climatic changes may be representative of a global climatic change pattern during the Holocene.

Keywords

Holocene lake document rapid changes 

Copyright information

© Science in China Press 2001

Authors and Affiliations

  • Fahu Chen
    • 1
  • Yan Zhu
    • 1
    • 2
  • Jijun Li
    • 1
  • Qi Shi
    • 3
  • Liya Jin
    • 1
  • B. Wünemann
    • 1
    • 4
  1. 1.National Laboratory of Western China’s Environmental SystemsLanzhou UniversityLanzhouChina
  2. 2.College of Geography and Environmental ScienceNorthwest Normal UniversityLanzhouChina
  3. 3.South China Sea Institute of OceanographyChinese Academy of SciencesGuangzhouChina
  4. 4.Institute of Geographical Science, Department of GeosciencesFree University of BerlinBerlinGermany