| Title: | Effects of Snow and Remineralization Processes on Nutrient Distributions in Multi-Year Antarctic Landfast Sea Ice |
| Authors: | Sahashi, Reishi Browse this author |
| Nomura, Daiki Browse this author →KAKEN DB |
| Toyota, Takenobu Browse this author →KAKEN DB |
| Tozawa, Manami Browse this author |
| Ito, Masato Browse this author |
| Wongpan, Pat Browse this author |
| Ono, Kazuya Browse this author →KAKEN DB |
| Simizu, Daisuke Browse this author |
| Naoki, Kazuhiro Browse this author |
| Nosaka, Yuichi Browse this author →KAKEN DB |
| Tamura, Takeshi Browse this author →KAKEN DB |
| Aoki, Shigeru Browse this author →KAKEN DB |
| Ushio, Shuki Browse this author →KAKEN DB |
| Keywords: | sea ice |
| snow |
| nutrients |
| remineralization |
| multi-year landfast ice |
| fast ice |
| East Antarctica |
| Issue Date: | 1-Jul-2022 |
| Publisher: | American Geophysical Union |
| Journal Title: | Journal of Geophysical Research Oceans |
| Volume: | 127 |
| Issue: | 7 |
| Start Page: | e2021JC018371 |
| Publisher DOI: | 10.1029/2021JC018371 |
| Abstract: | We elucidated the effects of snow and remineralization processes on nutrient distributions in multi-year landfast sea ice (fast ice) in Lutzow-Holm Bay, East Antarctica. Based on sea-ice salinity, oxygen isotopic ratios, and thin section analyses, we found that the multi-year fast ice grew upward due to the year-by-year accumulation of snow. Compared to ice of seawater origin, nutrient concentrations in shallow fast ice were low due to replacement by clean and fresh snow. In deeper ice of seawater origin (the lower half of the multi-year fast ice column), remineralization was dominated by the degradation of organic matter. By comparison between first- and muti-year ice, the biological uptake and the remineralization were dominated in relatively young ice and older ice, respectively, under the physical process of brine drainage. |
| Rights: | Copyright 2022. American Geophysical Union. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/87739 |
| 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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