湖泊硅藻氧同位素:一种前景广阔的陆相古气候指标

被引:4
作者
汉景泰
陈贺海
李东
郭正府
储国强
刘嘉麒
机构
[1] 中国科学院地质与地球物理研究所
关键词
硅藻氧同位素; 湖泊; 古气候;
D O I
暂无
中图分类号
P532 [古气候学]; P597 [同位素地质学与地质年代学];
学科分类号
070903 ; 070902 ;
摘要
硅藻氧同位素已日益成为陆相古气候重建的一种重要手段。文章在简述这一领域已取得的基本认识基础上,着重介绍了近年来的重要进展。主要进展包括:1)在硅藻的分离纯化方面,规范了重液分离法和新的重力差异流体分离法;2)完善了分步氟化法,创生了高温碳还原法的氧同位素制取技术;3)通过实验培养和天然湖泊监测实验,证实了硅藻氧同位素与温度的分馏平衡关系;4)湖泊硅藻氧同位素可以反映古温度、气候干旱事件和大气降水来源变化。同时,对目前硅藻氧同位素在湖泊沉积古气候研究中存在的主要问题作了讨论和展望。
引用
收藏
页码:634 / 642
页数:9
相关论文
共 8 条
[1]   藏南沉错钻孔硅藻组合与湖水古盐度定量恢复 [J].
羊向东 ;
王苏民 ;
沈吉 ;
C.Kamenik ;
R.Schmidt ;
朱立平 ;
李升峰 .
中国科学(D辑:地球科学), 2003, (02) :163-169
[2]   Cleaning of lake sediment samples for diatom oxygen isotope analysis [J].
Morley, DW ;
Leng, MJ ;
Mackay, AW ;
Sloane, HJ ;
Rioual, P ;
Battarbee, RW .
JOURNAL OF PALEOLIMNOLOGY, 2004, 31 (03) :391-401
[3]  
Oxygen isotope analysis of diatom silica and authigenic calcite from Lake Pinarbasi, Turkey[J] . Melanie Leng,Philip Barnker,Peter Greenwood,Neil Roberts,Jane Reed.Journal of Paleolimnology . 2001 (3)
[4]  
Modern diatom, cladocera, chironomid, and chrysophyte cyst assemblages as quantitative indicators for the reconstruction of past environmental conditions in the Alps. I. Climate[J] . André F. Lotter,H. John B. Birks,Wolfgang Hofmann,Aldo Marchetto.Journal of Paleolimnology . 1997 (4)
[5]   THE REPRESENTATION OF DIATOM COMMUNITIES BY FOSSIL ASSEMBLAGES IN A SMALL ACID LAKE [J].
CAMERON, NG .
JOURNAL OF PALEOLIMNOLOGY, 1995, 14 (02) :185-223
[6]  
Assessment of freshwater diatoms as quantitative indicators of past climatic change in the Yukon and Northwest Territories, Canada[J] . Reinhard Pienitz,John P. Smol,H. John B. Birks.Journal of Paleolimnology . 1995 (1)
[7]  
Diatom-temperature transfer functions based on the altitudinal zonation of diatom assemblages in Papua New Guinea: a possible tool in the reconstruction of regional palaeoclimatic changes[J] . Wim Vyverman,Koen Sabbe.Journal of Paleolimnology . 1995 (1)
[8]  
Differential diatom dissolution in Late Quaternary sediments from Lake Manyara, Tanzania: an experimental approach[J] . Philip Barker.Journal of Paleolimnology . 1992 (3)