Sixty year 10Be record from Greenland and Antarctica

A. Aldahan; G. Possnert; S. J. Johnsen; H. B. Clausen; E. Isaksson; W. Karlen; M. Hansson

Sixty year ¹⁰Be record from Greenland and Antarctica

A. Aldahan, G. Possnert, S. J. Johnsen, H. B. Clausen, E. Isaksson, W. Karlen, M. Hansson

Research output: Contribution to journal › Article › peer-review

Abstract

We report in this study the distribution of ¹⁰Be in the top 40 m of the Renland ice core (East Greenland) and in a 30 m long core from DML (Dronning Maud Land, Antarctica) for the period 1931-1988. The two sites show differences in ¹⁰Be content, the Antarctica site showing smaller variance and a lower average ¹⁰Be annual flux. Similarly, the average accumulation rate (cm water equivalent year^-1) is higher in the Renland relative to DML. The variability in accumulation (precipitation) rates seems to explain part of the difference in ¹⁰Be flux between the two polar sites. Cyclic fluctuations of ¹⁰Be flux correlate with the 11-year sunspot number and cosmic ray intensity than with the aa index (perturbation of the geomagnetic activity by the solar wind). Our data corroborate ¹⁰Be cyclic fluctuation pattern from the Dye 3 ice core and confirm a promising potential for correlation of global and local events.

Original language	English
Pages (from-to)	139-147
Number of pages	9
Journal	Proceedings of the Indian Academy of Sciences, Earth and Planetary Sciences
Volume	107
Issue number	2
Publication status	Published - 1998
Externally published	Yes

Keywords

Antarctica
Be-10
Climate
Greenland
Ice
Solar activity

ASJC Scopus subject areas

Earth and Planetary Sciences (miscellaneous)

Cite this

@article{c6149fef690f4691b65566d56a4287ba,

title = "Sixty year 10Be record from Greenland and Antarctica",

abstract = "We report in this study the distribution of 10Be in the top 40 m of the Renland ice core (East Greenland) and in a 30 m long core from DML (Dronning Maud Land, Antarctica) for the period 1931-1988. The two sites show differences in 10Be content, the Antarctica site showing smaller variance and a lower average 10Be annual flux. Similarly, the average accumulation rate (cm water equivalent year-1) is higher in the Renland relative to DML. The variability in accumulation (precipitation) rates seems to explain part of the difference in 10Be flux between the two polar sites. Cyclic fluctuations of 10Be flux correlate with the 11-year sunspot number and cosmic ray intensity than with the aa index (perturbation of the geomagnetic activity by the solar wind). Our data corroborate 10Be cyclic fluctuation pattern from the Dye 3 ice core and confirm a promising potential for correlation of global and local events.",

keywords = "Antarctica, Be-10, Climate, Greenland, Ice, Solar activity",

author = "A. Aldahan and G. Possnert and Johnsen, {S. J.} and Clausen, {H. B.} and E. Isaksson and W. Karlen and M. Hansson",

note = "Funding Information: Financial support for this work was provided by ~he Swedish Natural Science Research Council (NFR), Knut and Alice Wallenberg Foundation and the Tandem Laboratory (AMS group). Data of Dye 3 were kindly provided by Dr. Jiirg Beer. We thank Prof. D Lal for comments on this paper.",

year = "1998",

language = "English",

volume = "107",

pages = "139--147",

journal = "Journal of Earth System Science",

issn = "2347-4327",

publisher = "Indian Academy of Sciences",

number = "2",

}

TY - JOUR

T1 - Sixty year 10Be record from Greenland and Antarctica

AU - Aldahan, A.

AU - Possnert, G.

AU - Johnsen, S. J.

AU - Clausen, H. B.

AU - Isaksson, E.

AU - Karlen, W.

AU - Hansson, M.

N1 - Funding Information: Financial support for this work was provided by ~he Swedish Natural Science Research Council (NFR), Knut and Alice Wallenberg Foundation and the Tandem Laboratory (AMS group). Data of Dye 3 were kindly provided by Dr. Jiirg Beer. We thank Prof. D Lal for comments on this paper.

PY - 1998

Y1 - 1998

N2 - We report in this study the distribution of 10Be in the top 40 m of the Renland ice core (East Greenland) and in a 30 m long core from DML (Dronning Maud Land, Antarctica) for the period 1931-1988. The two sites show differences in 10Be content, the Antarctica site showing smaller variance and a lower average 10Be annual flux. Similarly, the average accumulation rate (cm water equivalent year-1) is higher in the Renland relative to DML. The variability in accumulation (precipitation) rates seems to explain part of the difference in 10Be flux between the two polar sites. Cyclic fluctuations of 10Be flux correlate with the 11-year sunspot number and cosmic ray intensity than with the aa index (perturbation of the geomagnetic activity by the solar wind). Our data corroborate 10Be cyclic fluctuation pattern from the Dye 3 ice core and confirm a promising potential for correlation of global and local events.

AB - We report in this study the distribution of 10Be in the top 40 m of the Renland ice core (East Greenland) and in a 30 m long core from DML (Dronning Maud Land, Antarctica) for the period 1931-1988. The two sites show differences in 10Be content, the Antarctica site showing smaller variance and a lower average 10Be annual flux. Similarly, the average accumulation rate (cm water equivalent year-1) is higher in the Renland relative to DML. The variability in accumulation (precipitation) rates seems to explain part of the difference in 10Be flux between the two polar sites. Cyclic fluctuations of 10Be flux correlate with the 11-year sunspot number and cosmic ray intensity than with the aa index (perturbation of the geomagnetic activity by the solar wind). Our data corroborate 10Be cyclic fluctuation pattern from the Dye 3 ice core and confirm a promising potential for correlation of global and local events.

KW - Antarctica

KW - Be-10

KW - Climate

KW - Greenland

KW - Ice

KW - Solar activity

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M3 - Article

AN - SCOPUS:0001298315

VL - 107

SP - 139

EP - 147

JO - Journal of Earth System Science

JF - Journal of Earth System Science

SN - 2347-4327

IS - 2

ER -

Sixty year ¹⁰Be record from Greenland and Antarctica

Abstract

Keywords

ASJC Scopus subject areas

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