Periodicity of Holocene climatic variations in the Huguangyan Maar Lake

Autor: Houyuan Lu, Guoqiang Chu, Xiangjun Luo, Jörg F. W. Negendank, Jens Mingram, Jiaqi Liu, Wenyuan Wang
Rok vydání: 2000
Předmět:
Zdroj: Chinese Science Bulletin
ISSN: 1861-9541
1001-6538
DOI: 10.1007/bf02898993
Popis: There exist five primary periods of 2 930, 1 140, 490, 250 and 220 a in the Holocene climatic variations in the Huguangyan Maar Lake, according to the energy-spectrum and filter analyses of high-resolution time sequences (10–15 a) of the sediment dry density. The peak values of the three temperature-decreasing periods with the 2 930 a cycle occur at about 7 300, 4 250 and 1 200 Cal. aBP. There are 7–8 temperature-decreasing periods with the 1 140 a cycle, and the climate fluctuation range is largest in the early Holocene, and reduces gradually in the middle and late Holocene. The millennial-scale climatic change in the Holocene may adjust the global water cycle and the thermohaline circulation intensity through the harmonic tones of the earth’s precession cycle, which in turn influences the global climate change.
Databáze: OpenAIRE
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