Sea surface temperature variations recorded on coralline Sr/Ca ratios during Mid-Late Holocene in Leizhou Peninsula

被引：0
|
作者：
WEI Gangjian1
2.South China Sea Institute of Oceanology
3.Advanced Centre for Queensland University Isotope Research Excel- lence(ACQUIRE)
机构：
来源：
Science Bulletin | 2004年 / 17期
关键词：
Porites coral; Sr/Ca ratio; sea surface temperature; South China Sea; Holocene;
D O I：
暂无
中图分类号：
P731.1 [海洋水文要素];
学科分类号：
0707 ;
摘要：
High-resolution Sr/Ca ratios of two Porites cor- als from Leizhou Peninsula were measured using inductively coupled plasma atomic spectrometry (ICP-AES). TIMS U-Th dating reveals that the life-spans of the two corals are 489—500 AD and 539—530 BC, respectively. Monthly sea surface temperatures (SSTs) during these two periods can be reconstructed from their skeletal Sr/Ca ratios. The results reveal that SSTs during 539—530 BC were roughly the same as those during 1990—2000 AD in this area, indicating a relative warm climate period. However, the period of 489— 500 AD was significantly cooler, with annual mean SST, the 10-a average of minimum monthly winter SSTs and the 10-a average of maximum monthly summer SSTs being about 2, 2.9 and 1℃ lower than that in the 1990s, respectively. Such climate patterns agree well with the phenological results re- corded in the historic documents in other areas of China.
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页码：1876 / 1881
页数：6
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