Evidence of past migration of the ice divide between the Shirase and Sôya drainage basins derived from chemical characteristics of the marginal ice in the Sôya drainage basin, East Antarctica

Iizuka, Yoshinori; Miura, Hideki; Iwasaki, Shogo; Maemoku, Hideaki; Sawagaki, Takanobu; Greve, Ralf; Satake, Hiroshi; Sasa, Kimikazu; Matsushi, Yuki

Evidence of past migration of the ice divide between the Shirase and Sôya drainage basins derived from chemical characteristics of the marginal ice in the Sôya drainage basin, East Antarctica

Iizuka, Yoshinori; Miura, Hideki; Iwasaki, Shogo et al.

Journal of Glaciology, 2010, 56(197), 395-404

Permalink : https://hdl.handle.net/2115/44809

このアイテムのアクセス数:1,440件（2026-05-25 21:15 集計）

閲覧可能ファイル

ファイル	フォーマット	サイズ	閲覧回数	説明
IG56-197_395-404	pdf	2.30 MB	1,013

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

アクセス権	open access
URI	https://hdl.handle.net/2115/44809
タイトル	Evidence of past migration of the ice divide between the Shirase and Sôya drainage basins derived from chemical characteristics of the marginal ice in the Sôya drainage basin, East Antarctica
著者	Iizuka, Yoshinori ; Miura, Hideki ; Iwasaki, Shogo ; Maemoku, Hideaki ; Sawagaki, Takanobu ; Greve, Ralf ; Satake, Hiroshi ; Sasa, Kimikazu ; Matsushi, Yuki
e-Rad_Researcher 40370043 著者名 Iizuka, Yoshinori
著者名 Miura, Hideki
著者名 Iwasaki, Shogo
著者名 Maemoku, Hideaki
著者名 Sawagaki, Takanobu
著者名 Greve, Ralf
著者名 Satake, Hiroshi
著者名 Sasa, Kimikazu
著者名 Matsushi, Yuki
言語	英語
キーワード	Antarctic ice sheet
	Ice divide
	Drainage basin
	Stable isotope
	Modelling
発行日	2010-08-01
出版者	International Glaciological Society
収録物名	Journal of Glaciology
巻(号)	56(197)
ページ	395-404
抄録	Ice originating near the inland ice divide of the ice sheet can reappear as marginal ice at the surface near the ice terminal in the ablation area. We have analyzed δ18O values and ion concentrations of the Skallen, Skarvsnes and Hamna terminal ice sections, located along the estuary line in the Sôya drainage basin, East Antarctica. The data suggest that the upper part of the Skallen terminal ice section could have originated from inland precipitation on the Shirase drainage basin during marine isotope stage (MIS) 5e, while the upper part of Skarvsnes and Hamna terminal ice sections could have originated from inland precipitation on the Sôya drainage basin. We calculate past elevation maps for the Antarctic ice sheet using the three-dimensional model, SICOPOLIS. This model suggests that the upstream portion of the Sôya drainage basin during the glacial period (MIS 2, 3 or 4) was located to the northeast of its present location. A flow history is proposed wherein ice from the inland Shirase drainage area flowed over the present ice-divide line from the Shirase to the Sôya drainage basin during the glacial period. The ice in the Sôya drainage basin then flowed to the marginal part of the sheet after the ice divide had assumed its present position.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	© 2010 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/10.3189/002214310792447707