MAGNETIC-SUSCEPTIBILITY EVIDENCE OF MONSOON VARIATION ON THE LOESS PLATEAU OF CENTRAL CHINA DURING THE LAST 130,000 YEARS
MAGNETIC-SUSCEPTIBILITY EVIDENCE OF MONSOON VARIATION ON THE LOESS PLATEAU OF CENTRAL CHINA DURING THE LAST 130,000 YEARS
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DOI：
10.1016/0033-5894(91)90015-w
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发表时间：
1991-07-01
影响因子：
2.3
通讯作者：
XIAO, JL
中科院分区：
文献类型：
--
作者：
AN, ZH;KUKLA, GJ;XIAO, JL
中国中部地区黄土和古土壤磁化率是一个与过去降水和植被变化密切相关的代用气候指标，因此与夏季风强度密切相关。本文构建了中国黄土高原南部3个黄土-古土壤序列的磁化率时间序列，记录了近13万年的夏季风变化历史，并与深海沉积物第1 ~ 5阶段的氧同位素记录密切相关。土壤在夏季风强的间歇期形成，而黄土单元在季风强度减弱时沉积。因此，中国黄土-古土壤序列可以看作是过去2.5千万年亚洲季风变化的代用记录。
The magnetic susceptibility of loess and paleosols in central China represents a proxy climate index closely related to past changes of precipitation and vegetation, and thus to summer monsoon intensity. Time series of magnetic susceptibility constructed for three loess-paleosol sequences in the southern part of the Chinese Loess Plateau document the history of summer monsoon variation during the last 130,000 yr. They correlate closely with the oxygen isotope record of stages 1 to 5 in deep-sea sediments. Soils were forming during intervals of strong summer monsoon, whereas loess units were deposited at times of reduced monsoon intensity. The Chinese loess-paleosol sequence can thus be viewed as a proxy record of Asian monsoon variability extending over the last 2.5 myr.