COMPARISON OF OXYGEN-ISOTOPE RECORDS FROM THE GISP2 AND GRIP GREENLAND ICE CORES

被引:1451
作者
GROOTES, PM
STUIVER, M
WHITE, JWC
JOHNSEN, S
JOUZEL, J
机构
[1] UNIV WASHINGTON,QUATERNARY RES CTR,SEATTLE,WA 98195
[2] UNIV COLORADO,INSTAAR,BOULDER,CO 80304
[3] UNIV COPENHAGEN,NIELS BOHR INST,DEPT GEOPHYS,DK-2200 COPENHAGEN,DENMARK
[4] UNIV ICELAND,INST SCI,DEPT GEOPHYS,IS-107 REYKJAVIK,ICELAND
[5] CTR ETUD SACLAY,CEA,DSM,MODELISAT CLIMAT & ENVIRONM LAB,F-91191 GIF SUR YVETTE,FRANCE
关键词
D O I
10.1038/366552a0
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
RECENT results1,2 from the Greenland Ice-core Project (GRIP) Summit ice core suggest that the climate in Greenland has been remarkably stable during the Holocene, but was extremely unstable for the time period represented by the rest of the core, spanning the last two glaciations and the intervening Eemian interglacial. Here we present the complete oxygen isotope record for the Greenland Ice Sheet Project 2 (GISP2) core, drilled 28 km west of the GRIP core. We observe large, rapid climate fluctuations throughout the last glacial period, which closely match those reported for the GRIP core. However, in the bottom 10% of the cores, spanning the Eemian interglacial and the previous glaciation, there are significant differences between the two records. It is possible that ice flow may have altered the chronological sequences of the stratigraphy for the bottom part of one or both of the cores. Considerable further work will be necessary to evaluate the likelihood of this, and the extent to which it will still be possible to extract meaningful climate information from the lowest sections of the cores.
引用
收藏
页码:552 / 554
页数:3
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