DMSP and DMS in coastal fast ice and under-ice water of Lützow-Holm Bay, eastern Antarctica

Nomura, Daiki; Kasamatsu, Nobue; Tateyama, Kazu; Kudoh, Sakae; Fukuchi, Mitsuo

DMSP and DMS in coastal fast ice and under-ice water of Lützow-Holm Bay, eastern Antarctica

Nomura, Daiki; Kasamatsu, Nobue; Tateyama, Kazu et al.

Continental Shelf Research, 2011, 31(13), 1377-1383

Permalink : https://hdl.handle.net/2115/70577

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アクセス権	open access
URI	https://hdl.handle.net/2115/70577
タイトル	DMSP and DMS in coastal fast ice and under-ice water of Lützow-Holm Bay, eastern Antarctica
著者	Nomura, Daiki ; Kasamatsu, Nobue ; Tateyama, Kazu ; Kudoh, Sakae ; Fukuchi, Mitsuo
e-Rad_Researcher 70550739 著者名 Nomura, Daiki
著者名 Kasamatsu, Nobue
著者名 Tateyama, Kazu
著者名 Kudoh, Sakae
著者名 Fukuchi, Mitsuo
言語	英語
キーワード	Sea ice
	DMSP
	DMS
	Ice melting
	Under-ice water
発行日	2011-09-01
出版者	Elsevier
収録物名	Continental Shelf Research
巻(号)	31(13)
ページ	1377-1383
抄録	The combined concentration of total dimethylsulfoniopropionate and dimethylsulfide (DMSP+DMS) were measured in Antarctic fast ice on the coast of Lützow-Holm Bay, eastern Antarctica. High bulk-ice DMSP+DMS and chlorophyll a concentrations were found at the bottom of the sea ice, and these concentrations were higher than those in the under-ice water. The bulk-ice DMSP+DMS and chlorophyll a concentrations were highly correlated (r2=0.68, P<0.001), suggesting that the high bulk-ice DMSP+DMS concentrations were caused mainly by the presence of algae assemblages in the ice. The calculated brine DMSP+DMS concentrations were as high as 1100 nM in the bottom ice layer, and the vertical profile patterns of brine DMSP+DMS concentrations were almost the same as for the bulk ice, mainly because of the small amount of variability in the vertical brine volume fraction. DMSP+DMS and chlorophyll a concentrations in the under-ice water increased, whereas the salinity of the under-ice water decreased, during the sampling period. These results reflect the supply of freshwater containing high levels of DMSP+DMS to the water just under the ice as the ice melted. These results suggest that sea-ice melting could be important to sulfur cycling in coastal ice-covered regions of the polar oceans.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2011. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	0278-4343
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.csr.2011.05.017