The chemical forms of water-soluble microparticles preserved in the Antarctic ice sheet during Termination I

Sakurai, Toshimitsu; Ohno, Hiroshi; Horikawa, Shinichiro; Iizuka, Yoshinori; Uchida, Tsutomu; Hirakawa, Kazuomi; Hondoh, Takeo

The chemical forms of water-soluble microparticles preserved in the Antarctic ice sheet during Termination I

Sakurai, Toshimitsu; Ohno, Hiroshi; Horikawa, Shinichiro et al.

Journal of Glaciology, 2011, 57(206), 1027-1032

Permalink : https://hdl.handle.net/2115/49346

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アクセス権	open access
URI	https://hdl.handle.net/2115/49346
タイトル	The chemical forms of water-soluble microparticles preserved in the Antarctic ice sheet during Termination I
著者	Sakurai, Toshimitsu ; Ohno, Hiroshi ; Horikawa, Shinichiro ; Iizuka, Yoshinori ; Uchida, Tsutomu ; Hirakawa, Kazuomi ; Hondoh, Takeo
著者名 Sakurai, Toshimitsu
著者名 Ohno, Hiroshi
著者名 Horikawa, Shinichiro
e-Rad_Researcher 40370043 著者名 Iizuka, Yoshinori
e-Rad_Researcher 70356575 著者名 Uchida, Tsutomu
e-Rad_Researcher 40126652 著者名 Hirakawa, Kazuomi
e-Rad_Researcher 60109494 著者名 Hondoh, Takeo
言語	英語
発行日	2011-12
出版者	International Glaciological Society
収録物名	Journal of Glaciology
巻(号)	57(206)
ページ	1027-1032
抄録	This study clarifies changes in the chemical forms of microparticles during Termination I, the period of drastic climate change between the Last Glacial Maximum (LGM) and the Holocene. We determine the chemical forms of individual water-soluble microparticles through micro-Raman spectroscopy and compare the relative frequencies of different types with the ion concentrations in melted ice. Micro-Raman spectroscopy shows that Na2SO4・10H2O and MgSO4・11H2O are abundant in Holocene ice, while CaSO4・2H2O and other salts are abundant in LGM ice. Further, the number of CaSO4・2H2O particles is strongly correlated with the concentration of Ca2+ during Termination I. Taken together, the evidence strongly suggests that most of the Ca2+ exists as CaSO4・2H2O. The different compositions of microparticles from the Holocene and LGM can be explained by ion balance arguments.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	© 2011 International Glaciological Society
PISSN	0022-1430
関連情報	URI http://www.igsoc.org/
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.3189/002214311798843403