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DMSP and DMS in coastal fast ice and under-ice water of Lützow-Holm Bay, eastern Antarctica
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| Title: | DMSP and DMS in coastal fast ice and under-ice water of Lützow-Holm Bay, eastern Antarctica |
| Authors: | Nomura, Daiki Browse this author →KAKEN DB | | Kasamatsu, Nobue Browse this author | | Tateyama, Kazu Browse this author | | Kudoh, Sakae Browse this author | | Fukuchi, Mitsuo Browse this author |
| Keywords: | Sea ice | | DMSP | | DMS | | Ice melting | | Under-ice water |
| Issue Date: | 1-Sep-2011 |
| Publisher: | Elsevier |
| Journal Title: | Continental Shelf Research |
| Volume: | 31 |
| Issue: | 13 |
| Start Page: | 1377 |
| End Page: | 1383 |
| Publisher DOI: | 10.1016/j.csr.2011.05.017 |
| Abstract: | 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. |
| Rights: | © 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/ | | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/70577 |
| Appears in Collections: | 水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 野村 大樹
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