Back to Search Start Over

Recent 2000-year geological records of mud in the inner shelf of the East China Sea and their climatic implications

Authors :
Tiegang Li
Peng Huang
Fuqinq Jiang
Shangbin Xiao
Zhaokai Xu
Anchun Li
Source :
Chinese Science Bulletin. 50:466-471
Publication Year :
2005
Publisher :
Springer Science and Business Media LLC, 2005.

Abstract

AXIS(14)C dating and grain-size analysis for Core DD2, located at the north of the Yangtze River-derived mud off the Zhejiang-Fujian coasts in the inner shelf of the East China Sea, provide us a high-resolution grain-size distribution curve varying with depth and time. Data in the upper mud layer of Core DD2 indicate that there are at least 9 abrupt grain-size increasing in recent 2000 years, with each corresponding very well with the low-temperature events in Chinese history, which might result from the periodical strengthening of the East Asian Winter Monsoon (EAWM), including the first-revealed maximum temperature lowering event at around 990 a BP. At the same time, the finer grain size section in Core DD2 agrees well with the Sui-Tang Warming Period (600-1000 a AD) defined previously by Zhu Kezhen, during which the climate had a warm, cold and warm fluctuation, with a dominated cooling period of 750-850 a AD. The Little Ice Age (LIA) can also be identified in the core. It starts around 1450 a AD and was followed by a subsequent cooling events at 1510, 1670 and 1840 a AD. Timing of these cold events revealed here still needs to be further verified owing to some current uncertainty of dating we used in this study.

Details

ISSN :
18619541 and 10016538
Volume :
50
Database :
OpenAIRE
Journal :
Chinese Science Bulletin
Accession number :
edsair.doi...........7883a24b0735402632ef7447413d231d
Full Text :
https://doi.org/10.1007/bf02897464