| TONG Jinlu,CHEN Min,QIU Yusheng,LI Yanping,CAO Jianping. 2014. Contrasting patterns of river runoff and sea-ice melted water in the Canada Basin. Acta Oceanologica Sinica, 33(6):46－52 |
| Contrasting patterns of river runoff and sea-ice melted water in the Canada Basin |
| Contrasting patterns of river runoff and sea-ice melted water in the Canada Basin |
| Received:January 24, 2013 Revised:April 13, 2013 |
| DOI：10.1007/s13131-014-0488-4 |
| Key words:freshwater Canada Basin 18O water mass |
| 中文关键词: freshwater Canada Basin 18O water mass |
| 基金项目:The Chinese Polar Environment Comprehensive Investigation and Assessment Programs under contract No. CHINARE2014-03-04-03; the National Natural Science Foundation of China under contract No. 41125020; a special scientific research project for public welfare supported by the State Oceanic Administration under contract No. 201105022-4; the 4th Chinese Arctic Research Program. |
| Author Name | Affiliation | E-mail | | TONG Jinlu | College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China | | | CHEN Min | College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China
State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China | mchen@xmu.edu.cn | | QIU Yusheng | College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China
State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China | | | LI Yanping | College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China | | | CAO Jianping | College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China | |
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| Abstract: |
| The fractions of river runoff and sea-ice melted water in the Canada Basin in summer 2003 were determined by the salinity-δ18O system. The fraction of river runoff (fR) was high in the upper 50 m of the water column and decreased with depth and latitude. The signals of the river runoff were confined to water depths above 200 m. The total amount of river runoff in the Canada Basin was higher than that in other arctic seas, indicating that the Canada Basin is a main storage region for river runoff. The penetration depth of the sea-ice melted water was less than 50 m to the south of 78°N, while it was about 150 m to the north of 78°N. The total amount of sea-ice melted water was much higher to the north of 78°N than to the south of 78°N, indicating the sea-ice melted waters accumulated on the ice edge. The abundant sea-ice melted water on the ice edge was attributed to the earlier melted water in the southern Canada Basin and transported by the Beaufort Gyre or the reinforced melting of sea ice by solar radiation in the polynya. |
| 中文摘要: |
| The fractions of river runoff and sea-ice melted water in the Canada Basin in summer 2003 were determined by the salinity-δ18O system. The fraction of river runoff (fR) was high in the upper 50 m of the water column and decreased with depth and latitude. The signals of the river runoff were confined to water depths above 200 m. The total amount of river runoff in the Canada Basin was higher than that in other arctic seas, indicating that the Canada Basin is a main storage region for river runoff. The penetration depth of the sea-ice melted water was less than 50 m to the south of 78°N, while it was about 150 m to the north of 78°N. The total amount of sea-ice melted water was much higher to the north of 78°N than to the south of 78°N, indicating the sea-ice melted waters accumulated on the ice edge. The abundant sea-ice melted water on the ice edge was attributed to the earlier melted water in the southern Canada Basin and transported by the Beaufort Gyre or the reinforced melting of sea ice by solar radiation in the polynya. |
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