Variation of freshwater components in the Canada Basin during 1967-2010
The Chinese Polar Environment Comprehensive Investigation and Assessment Programs [CHINARE2014-03-04-03, CHINARE2013-04-03-05]; National Natural Science Foundation of China [41125020]; 4th Chinese Arctic Research Program; State Oceanic Administration [201105022-4] As a conservative tracer, oxygen is...
Main Authors: | , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
SPRINGER
2014
|
Subjects: | |
Online Access: | http://dspace.xmu.edu.cn/handle/2288/88124 |
id |
ftxiamenuniv:oai:dspace.xmu.edu.cn:2288/88124 |
---|---|
record_format |
openpolar |
spelling |
ftxiamenuniv:oai:dspace.xmu.edu.cn:2288/88124 2023-05-15T14:50:24+02:00 Variation of freshwater components in the Canada Basin during 1967-2010 Pan Hong Chen Min Tong Jinlu Qiu Yusheng Zheng Minfang Cao Jianping 陈敏 2014 JUN http://dspace.xmu.edu.cn/handle/2288/88124 en_US eng SPRINGER ACTA OCEANOLOGICA SINICA, 2014,33(6):40-45 WOS:000336422900005 http://dspace.xmu.edu.cn/handle/2288/88124 http://dx.doi.org/10.1007/s13131-014-0487-5 NORTH-ATLANTIC OSCILLATION ARCTIC-OCEAN RESIDENCE TIME RIVER RUNOFF SEA-ICE VARIABILITY CIRCULATION DELTA-O-18 DECREASE BALANCE Article 2014 ftxiamenuniv 2020-07-21T11:42:39Z The Chinese Polar Environment Comprehensive Investigation and Assessment Programs [CHINARE2014-03-04-03, CHINARE2013-04-03-05]; National Natural Science Foundation of China [41125020]; 4th Chinese Arctic Research Program; State Oceanic Administration [201105022-4] As a conservative tracer, oxygen isotopes in seawater are widely used for water mass analysis, along with temperature and salinity. In this study, seawater oxygen-18 datasets in the Canada Basin during 1967-2010 were obtained from the four cruises of the Chinese National Arctic Research Expedition (1999, 2003, 2008, and 2010) and the NASA database. Fractions of sea ice meltwater and river runoff were determined from the salinity-delta O-18 system. Our results showed that the river runoff decreased from the south to the north in the Canada Basin. The enhanced amount of river runoff observed in the southern Canada Basin may originate from the Mackenzie River, transported by the Beaufort Gyre. The river runoff component showed maximum fractions during 1967-1969, 1978-1979, 1984-1985, 1993-1994, and 2008-2010, indicating the refresh time of the river runoff was 5.0-16.0 a in the Canada Basin. The temporal variation of the river runoff was related to the change of the Arctic Oscillation (AO) index, suggesting the freshwater stored in the Canada Basin was affected by surface sea ice drift and water mass movement driven by atmospheric circulation. Article in Journal/Newspaper Arctic Arctic Ocean canada basin Mackenzie river North Atlantic North Atlantic oscillation Sea ice Xiamen University Institutional Repository Arctic Arctic Ocean Canada Mackenzie River |
institution |
Open Polar |
collection |
Xiamen University Institutional Repository |
op_collection_id |
ftxiamenuniv |
language |
English |
topic |
NORTH-ATLANTIC OSCILLATION ARCTIC-OCEAN RESIDENCE TIME RIVER RUNOFF SEA-ICE VARIABILITY CIRCULATION DELTA-O-18 DECREASE BALANCE |
spellingShingle |
NORTH-ATLANTIC OSCILLATION ARCTIC-OCEAN RESIDENCE TIME RIVER RUNOFF SEA-ICE VARIABILITY CIRCULATION DELTA-O-18 DECREASE BALANCE Pan Hong Chen Min Tong Jinlu Qiu Yusheng Zheng Minfang Cao Jianping 陈敏 Variation of freshwater components in the Canada Basin during 1967-2010 |
topic_facet |
NORTH-ATLANTIC OSCILLATION ARCTIC-OCEAN RESIDENCE TIME RIVER RUNOFF SEA-ICE VARIABILITY CIRCULATION DELTA-O-18 DECREASE BALANCE |
description |
The Chinese Polar Environment Comprehensive Investigation and Assessment Programs [CHINARE2014-03-04-03, CHINARE2013-04-03-05]; National Natural Science Foundation of China [41125020]; 4th Chinese Arctic Research Program; State Oceanic Administration [201105022-4] As a conservative tracer, oxygen isotopes in seawater are widely used for water mass analysis, along with temperature and salinity. In this study, seawater oxygen-18 datasets in the Canada Basin during 1967-2010 were obtained from the four cruises of the Chinese National Arctic Research Expedition (1999, 2003, 2008, and 2010) and the NASA database. Fractions of sea ice meltwater and river runoff were determined from the salinity-delta O-18 system. Our results showed that the river runoff decreased from the south to the north in the Canada Basin. The enhanced amount of river runoff observed in the southern Canada Basin may originate from the Mackenzie River, transported by the Beaufort Gyre. The river runoff component showed maximum fractions during 1967-1969, 1978-1979, 1984-1985, 1993-1994, and 2008-2010, indicating the refresh time of the river runoff was 5.0-16.0 a in the Canada Basin. The temporal variation of the river runoff was related to the change of the Arctic Oscillation (AO) index, suggesting the freshwater stored in the Canada Basin was affected by surface sea ice drift and water mass movement driven by atmospheric circulation. |
format |
Article in Journal/Newspaper |
author |
Pan Hong Chen Min Tong Jinlu Qiu Yusheng Zheng Minfang Cao Jianping 陈敏 |
author_facet |
Pan Hong Chen Min Tong Jinlu Qiu Yusheng Zheng Minfang Cao Jianping 陈敏 |
author_sort |
Pan Hong |
title |
Variation of freshwater components in the Canada Basin during 1967-2010 |
title_short |
Variation of freshwater components in the Canada Basin during 1967-2010 |
title_full |
Variation of freshwater components in the Canada Basin during 1967-2010 |
title_fullStr |
Variation of freshwater components in the Canada Basin during 1967-2010 |
title_full_unstemmed |
Variation of freshwater components in the Canada Basin during 1967-2010 |
title_sort |
variation of freshwater components in the canada basin during 1967-2010 |
publisher |
SPRINGER |
publishDate |
2014 |
url |
http://dspace.xmu.edu.cn/handle/2288/88124 |
geographic |
Arctic Arctic Ocean Canada Mackenzie River |
geographic_facet |
Arctic Arctic Ocean Canada Mackenzie River |
genre |
Arctic Arctic Ocean canada basin Mackenzie river North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Arctic Arctic Ocean canada basin Mackenzie river North Atlantic North Atlantic oscillation Sea ice |
op_source |
http://dx.doi.org/10.1007/s13131-014-0487-5 |
op_relation |
ACTA OCEANOLOGICA SINICA, 2014,33(6):40-45 WOS:000336422900005 http://dspace.xmu.edu.cn/handle/2288/88124 |
_version_ |
1766321437133504512 |