南极普里兹湾1.5万年来气候演变的沉积记录

吴时国; 陆钧

南极普里兹湾1.5万年来气候演变的沉积记录

吴时国,
陆钧

中国科学院南海海洋研究所, 广州510301

基金项目: 国家南极科技攻关资助项目(编号:905-02-04-04)

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出版历程
- 收稿日期: 1996-05-24
- 修回日期: 1996-12-20

Paleoclimatic evolution recorded in sediments of the Prydz Bay, Antarctica in 15 000 years

Wu Shiguo,
Lu Jun

South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301

摘要

摘要: 南极普里兹湾两沉积柱样代表了1.5万年来的沉积记录.其粒度特征、矿物成分、硅藻分布和地球化学等沉积特征表明,沉积记录对气候变化的反应十分敏感,尤其是发现14310aBP前后的Heinrich事件,据此将该区1.5万年来的古气候演化划分为8个阶段.
- 南极 /
- 普里兹湾 /
- 古气候 /
- 海洋沉积物
Abstract: Two cores from the Prydz Bay, Antarctica have been recorded paleoclimatic change in 15 000 years.The characteristics of the grain size,mineral composition,diatom assemblage and geochemistry are sensitive to the paleoclimatic change, and especial the Heinrich Eventaround 14.31 ka is discovered.On the basis of the above study, paleoclimatic evolution can be divided into eight stages:Ⅰ.Older Dryas,Ⅱ.Heinrich Event 1,Ⅲ.Bolling-Allerod,Ⅳ.Younger Dryas,Ⅴ.changing warm period,Ⅵ.suitable period, Ⅶ warm period,Ⅷ.cool period.
- Antarctica /
- the Prydz Bay /
- paleoclimate marine sediments /

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参考文献(10)

Carmark E C.Water characteristics of the Southern Ocean South of the Polar Front.In:Voyage of Discovery CM V A Ngel ed.),Deep Sea Research Supplement,1977,24,15-41

董兆乾,内维尔·史密斯·诺尔斯克里,塞门·负特.南极普里兹湾海域夏季的水团和环流.南极科学考察论文集(第二集),北京:海洋出版社,1984,1-24

岳云章.南极半岛西北海域表层沉积物¹⁴C年龄测定及其年代误差问题的探讨.南极研究,1989,1(4):52-56

Hambrey M J,Ehrman W U,Larsen B.Cenozoic glacial record of the Prydz Bay continental shelf,East Antarctica.In:Proceedings of the Ocean Drilling Program,Science Results(Barron J.Larsen et al.eds),1991,119,77-132

Kuvaas B,Leitchenkenkov U L.Ulacigenic turbidite and current controlled deposites in Prydz Bay,Antarctica.Marine Geology,1992,108,367-383

Levenler A.Modern distribution of diatoms in sediments from(Ueoge V coast.Antarctica.Marine Micropaleotology,1992,19,315-332

Tuesdate R S,Kellogg T B.Ross Sea diatoms:Modern assemblage distribution and their relationship to ecologic,oceanographic and sedimentary conditions.Marine Micropaleotology,1979,4,13-31

Heinrich H.Origin and consequences of cyclic ice rafting in the Northeast Atlantic Ocean during the past 130 000 years.Quaternary Research,1988,29,142-152

Bond U,Broecker W,Johnson S et al.Correlations between climate records from the North Atlantic sediments and Greenland ice.Nature,1993,365,143-147

Beget J E.Radiocarbon dated evidence of world wide early Holocene climate change.Geology,1983,108.367-383

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文章访问数: 724
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