| 东海内陆架泥质沉积Rb和Sr的地球化学及其古气候意义 |
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| 引用本文： | 王顺华,张国栋,张纪双,吴亚良. 东海内陆架泥质沉积Rb和Sr的地球化学及其古气候意义[J]. 科技导报(北京), 2007, 25(3): 22-27 |
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| 作者姓名： | 王顺华 张国栋 张纪双 吴亚良 |
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| 作者单位： | 中国科学院广州地球化学研究所,广州,510640;胜利石油管理局,山东,东营,257000;三峡大学湖北省水电工程施工与管理重点实验室,湖北,宜昌,443002;胜利石油管理局,山东,东营,257000 |
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| 基金项目： | 致谢：本文相关数据由三峡大学肖尚斌博士提供. |
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| 摘 要： | 通过对位于东海内陆架闽浙沿岸泥质沉积区北部的DD2孔进行AMS14C年龄测试和Rb,Sr含量测定,获得了近2ka的Rb/Sr比值(RRb/Sr)变化的高分辨率曲线。该曲线揭示出10次RRb/Sr低值时期,它们与历史时期中国温度下降有很好的对应关系,并印证了约990AD的降温事件。根据RRb/Sr的变化,基本认同竺可桢所界定的隋唐温暖期,并认为气候存在温暖-寒冷-温暖的波动,且其中的相对寒冷期为800-890AD。研究认为小冰期时间段为1480-1890AD,且由3个寒冷阶段构成,小冰期的最冷峰为约1520AD,1670AD,1780AD和1850AD。
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| 关 键 词： | 东海内陆架 PRb/Sr 古气候 |
| 文章编号： | 1000-7857(2007)03-0022-06 |
| 修稿时间： | 2006-10-31 |
Geochemical Studies on Rb and Sr in the Mud on the Inner Shelf of the East China Sea and Their Palaeoclimate Significance |
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| WANG Shunhua,ZHANG Guodong,ZHANG Jishuang,WU Yaliang. Geochemical Studies on Rb and Sr in the Mud on the Inner Shelf of the East China Sea and Their Palaeoclimate Significance[J]. Science & Technology Review, 2007, 25(3): 22-27 |
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| Authors: | WANG Shunhua ZHANG Guodong ZHANG Jishuang WU Yaliang |
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| Affiliation: | 1 , Guangzhou Institute of Geochemistry, Chinese A cademy of Sciences, Guangzhou 510640, China ;2.Shengli Petroleum A dministrative Bureau, Dongying 257000, Shangdong Province, China;3. Hubei Key Laboratory of Construction and Management in Hydropower Engineering, China Three Gorges University, Yichang 443002 ,Hubei Province, China |
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| Abstract: | A high-resolution palaeoclimate record of recent 2 ka is obtained based on RRb/Sr and AMS 14C dating of Core DD2, which is located at the north of the mud area on the inner shelf of the East China Sea (ECS). 10 periods of low RRb/Sr are identified, which well agree with periods of lower temperature in China's history, and the lower temperature during about 990 AD is verified. According to the variation of RRb/Sr, the Sui-Tang dynasty Warming Period defined by Zhu Kezhen is confirmed on the whole, during which period a fluctuation of warm-cold-warm exists, and the cold period is during 800-890 AD. The Little Ice Age (LIA) extends from 1480 AD to 1890 AD, where 1520 AD, 1670 AD, 1780 AD and 1850 AD are cold. |
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| Keywords: | inner shelf of the East China Sea Rb/Sr palaeoclimate |
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