A relationship between ion balance and the chemical compounds of salt inclusions found in the Greenland Ice Core Project and Dome Fuji ice cores

Sigfus Johann Johnsen; Dorthe Dahl-Jensen; Jørgen Peder Steffensen; Yoshinori Iizuka; Shinichiro Horikawa; Toshimitsu Sakurai; Takeo Hondoh

doi:10.1029/2007JD009018

A relationship between ion balance and the chemical compounds of salt inclusions found in the Greenland Ice Core Project and Dome Fuji ice cores

Sigfus Johann Johnsen, Dorthe Dahl-Jensen, Jørgen Peder Steffensen, Yoshinori Iizuka, Shinichiro Horikawa, Toshimitsu Sakurai, Takeo Hondoh

Physics of Ice, Climate and Earth

33 Citations (Scopus)

Abstract

We have proposed a method of deducing the chemical compounds found in deep polar ice cores by analyzing the balance between six major ions (Cl^-, NO₃ ^-, SO₄ ^2-, Na⁺, Mg²⁺, and Ca²⁺). The method is demonstrated for the Holocene and last glacial maximum regions of the Dome Fuji and GRIP ice cores. The dominant compounds depend only on the ion balance and the sequence of chemical reactions. In priority order, the principle salts are calcium sulfate, other sulfates, nitrate, chloride, and carbonate. The chemical abundances deduced by this method agree well with the results of Raman spectroscopy on individual salt inclusions. The abundances in the ice cores are shown to reflect differences in climatic periods (the acidic environment of the Holocene versus the reductive environment of the last glacial maximum) and regional conditions (the marine environment of Antarctica versus the continental environment of Greenland).
Udgivelsesdato: April 4

Original language	English
Journal	Journal of Geophysical Research - Atmospheres
Volume	113
Pages (from-to)	D07303
ISSN	0196-2256
DOIs	https://doi.org/10.1029/2007JD009018
Publication status	Published - 2008

Keywords

Faculty of Science

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10.1029/2007JD009018

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A relationship between ion balance and the chemical compounds of salt inclusions found in the Greenland Ice Core Project and Dome Fuji ice cores. / Johnsen, Sigfus Johann; Dahl-Jensen, Dorthe ; Steffensen, Jørgen Peder et al.
In: Journal of Geophysical Research - Atmospheres, Vol. 113, 2008, p. D07303.

Research output: Contribution to journal › Journal article › Research › peer-review

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abstract = "We have proposed a method of deducing the chemical compounds found in deep polar ice cores by analyzing the balance between six major ions (Cl-, NO3 -, SO4 2-, Na+, Mg2+, and Ca2+). The method is demonstrated for the Holocene and last glacial maximum regions of the Dome Fuji and GRIP ice cores. The dominant compounds depend only on the ion balance and the sequence of chemical reactions. In priority order, the principle salts are calcium sulfate, other sulfates, nitrate, chloride, and carbonate. The chemical abundances deduced by this method agree well with the results of Raman spectroscopy on individual salt inclusions. The abundances in the ice cores are shown to reflect differences in climatic periods (the acidic environment of the Holocene versus the reductive environment of the last glacial maximum) and regional conditions (the marine environment of Antarctica versus the continental environment of Greenland). Udgivelsesdato: April 4",

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AU - Johnsen, Sigfus Johann

AU - Dahl-Jensen, Dorthe

AU - Steffensen, Jørgen Peder

AU - Iizuka, Yoshinori

AU - Horikawa, Shinichiro

AU - Sakurai, Toshimitsu

AU - Hondoh, Takeo

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AB - We have proposed a method of deducing the chemical compounds found in deep polar ice cores by analyzing the balance between six major ions (Cl-, NO3 -, SO4 2-, Na+, Mg2+, and Ca2+). The method is demonstrated for the Holocene and last glacial maximum regions of the Dome Fuji and GRIP ice cores. The dominant compounds depend only on the ion balance and the sequence of chemical reactions. In priority order, the principle salts are calcium sulfate, other sulfates, nitrate, chloride, and carbonate. The chemical abundances deduced by this method agree well with the results of Raman spectroscopy on individual salt inclusions. The abundances in the ice cores are shown to reflect differences in climatic periods (the acidic environment of the Holocene versus the reductive environment of the last glacial maximum) and regional conditions (the marine environment of Antarctica versus the continental environment of Greenland). Udgivelsesdato: April 4

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