A GEOMAGNETIC CHRONOLOGY FOR ANTARCTIC ICE ACCUMULATION

被引：47

作者：

MAZAUD, A ^{[1
]}

LAJ, C ^{[1
]}

BENDER, M ^{[1
]}

机构：

[1] UNIV RHODE ISL,GRAD SCH OCEANOG,KINGSTON,RI 02881

来源：

GEOPHYSICAL RESEARCH LETTERS | 1994年 / 21卷 / 05期

关键词：

D O I：

10.1029/93GL02789

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The curve of Be-10 flux versus age in the Vostok ice core largely covaries with a synthetic curve calculated assuming that a large fraction of Be-10 production rate is modulated by changes in the geomagnetic field intensity. With this assumption, it is also possible to derive a. precise chronology for the Vostok core. This chronology is in good agreement with a very recent glaciological chronology obtained for Vostok ice core, and improves the correspondence of climate events recorded in Antarctic ice with correlative events recorded in deep sea sediments. Therefore, the idea that changes in the Be-10 flux at Vostok may arise from variations in Earth's geomagnetic dipole field has to be seriously considered. This would imply that a large portion of the Be-10 deposited there is derived from lower latitudes.

引用

页码：337 / 340

页数：4

共 23 条

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