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Hokkaido University Collection of Scholarly and Academic Papers >
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Biogeochemical properties of water in surface ponds on Antarctic fast ice and their relationship with underlying sea-ice properties
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| Title: | Biogeochemical properties of water in surface ponds on Antarctic fast ice and their relationship with underlying sea-ice properties |
| Authors: | Nomura, Daiki Browse this author →KAKEN DB | | Simizu, Daisuke Browse this author | | Shinagawa, Hideo Browse this author | | Oouchida, Chinatsu Browse this author | | Fukuchi, Mitsuo Browse this author |
| Issue Date: | 2011 |
| Publisher: | Cambridge University Press |
| Journal Title: | Journal of Glaciology |
| Volume: | 57 |
| Issue: | 205 |
| Start Page: | 848 |
| End Page: | 856 |
| Publisher DOI: | 10.3189/002214311798043825 |
| Abstract: | Surface ponds on Antarctic fast ice were examined by measuring temperature, salinity and concentrations of chlorophyll a (Chl-a), dissolved inorganic carbon (DIC) and nutrients (NO3 + NO2, PO4 and SiO2) in the surface pond water and under-ice water. Sea-ice cores were also collected from the bottom of a surface pond (pond-ice core) and from a site away from the pond (bare-ice core). Time-series measurements of surface pond water temperature showed that it varied with solar radiation rather than with air temperature. Comparison of water properties between surface pond water and under-ice water suggested that DIC and nutrients were consumed by biological productivity during pond formation. Depth profiles of nutrient concentrations in the pond-ice core suggested the remineralization of organic matter at the bottom of the surface pond. The Chl-a concentration was lower at the bottom of the pond-ice core than in the bare-ice core, suggesting that surface pond formation reduces ice algae abundance in sea ice because meltwater flushes algae from the porous sea ice into the under-ice water. |
| Rights: | © 2011 International Glaciological Society | | https://creativecommons.org/licenses/by/4.0/ |
| Relation: | https://www.igsoc.org/journal/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/70579 |
| 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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