Accumulation of freshwater in the permanent ice zone of the Canada Basin during summer 2008

TONG Jinlu; CHEN Min; YANG Weifeng; ZHANG Run; PAN Hong; ZHENG Minfang; QIU Yusheng; HU Wangjiang; ZENG Jian

doi:10.1007/s13131-017-1023-1

2008年夏季加拿大海盆永久冰区的淡水累积现象

doi: 10.1007/s13131-017-1023-1

1.
厦门大学海洋与地球学院, 厦门 361102, 中国
2.
厦门大学海洋与地球学院, 厦门 361102, 中国;厦门大学近海海洋环境科学国家重点实验室, 厦门 361102, 中国

基金项目: The Chinese Polar Environment Comprehensive Investigation & Assessment Program under contract Nos CHINARE2017-03-04-03 and CHINARE2017-04-03-05; the Natural Science Foundation of China under contract No. 41125020.

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- 收稿日期: 2016-05-27

Accumulation of freshwater in the permanent ice zone of the Canada Basin during summer 2008

1.
College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
2.
College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China;State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China

摘要

摘要: 利用海水δ¹⁸O和盐度数据，通过运用不同的海水端元特征值，定量区分出北极河流和太平洋入流输送的河水组分，进而开展了2008年夏季加拿大海盆淡水收支平衡状况的研究。在加拿大海盆，包括北极河流和太平洋入流输送的总河水组分份额在50 m以浅水体较高，且随着深度和纬度的增加而降低。与总河水组分不同，太平洋入流河水组分的份额随深度的增加而增加，并随着纬度的增加而降低。加拿大海盆总河水组分的储量高于北冰洋其他海盆，说明加拿大海盆是北冰洋河水组分的主要储藏区域。对于50 m以浅水体，北极河流河水组分的份额高于太平洋入流河水组分，但在50 m以深水体中，情况刚好相反，即太平洋入流河水组分的份额高于北极河流河水组分。综合的结果看，太平洋入流河水组分的储量高于北极河流河水组分，说明通过白令海峡的太平洋入流是加拿大海盆淡水的主要来源。加拿大海盆永久冰区的河水和海冰融化水组分比刚融化区域更为丰富。在82°N以北海域，总河水组分、北极河流河水组分和太平洋入流河水组分的份额往北逐渐增加，显示出加拿大海盆北部海域的永久冰区存在额外的河水来源，这些额外的河水组分可能是通过穿极流将陆架水体水平输送所提供。在加拿大海盆南部海域，海冰融化水的穿透深度小于30 m，而在加拿大海盆北部海域，海冰融化水的穿透深度可达125 m。海冰融化水储量的空间变化显示，永久冰区附近海域累积海冰融化水，可能是由波弗特环流将南部海域早期融化的海冰融化水输运至北部海域并累积形成。
- ¹⁸O /
- 淡水 /
- 河水 /
- 海冰融化水 /
- 加拿大海盆
Abstract: A combination of δ¹⁸O and salinity data was employed to explore the freshwater balance in the Canada Basin in summer 2008. The Arctic river water and Pacific river water were quantitatively distinguished by using different saline end-members. The fractions of total river water, including the Arctic and Pacific river water, were high in the upper 50 m and decreased with depth as well as increasing latitude. In contrast, the fraction of Pacific river water increased gradually with depth but decreased toward north. The inventory of total river water in the Canada Basin was higher than other arctic seas, indicating that Canada Basin was a main storage region for river water in the Arctic Ocean. The fraction of Arctic river water was higher than Pacific river water in the upper 50 m while the opposite was true below 50 m. As a result, the inventories of Pacific river water were higher than those of Arctic river water, demonstrating that the Pacific inflow through the Bering Strait is the main source of freshwater in the Canada Basin. Both the river water and sea-ice melted water in the permanent ice zone were more abundant than those in the region with sea-ice just melted. The fractions of total river water, Arctic river water, Pacific river water increased northward to the north of 82°N, indicating an additional source of river water in the permanent ice zone of the northern Canada Basin. A possible reason for the extra river water in the permanent ice zone is the lateral advection of shelf waters by the Trans-Polar Drift. The penetration depth of sea-ice melted waters was less than 30 m in the southern Canada Basin, while it extended to 125 m in the northern Canada Basin. The inventory of sea-ice melted water suggested that sea-ice melted waters were also accumulated in the permanent ice zone, attributing to the trap of earlier melted waters in the permanent ice zone via the Beaufort Gyre.
- ¹⁸O /
- freshwater /
- river water /
- sea ice melted water /
- Canada Basin

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参考文献(54)

Aagaard K, Carmack E C. 1989. The role of sea ice and other fresh water in the Arctic circulation. J Geophys Res, 94(C10):14485-14498

Anderson L G, Andersson P S, Björk G, et al. 2013. Source and formation of the upper halocline of the Arctic Ocean. J Geophys Res, 118(1):410-421

Bauch D, Erlenkeuser H, Andersen N. 2005. Water mass processes on Arctic shelves as revealed from δ¹⁸O of H₂O. Glob Planet Change, 48(1-3):165-174

Bauch D, Schlosser P, Fairbanks R G. 1995. Freshwater balance and the sources of deep and bottom waters in the Arctic Ocean inferred from the distribution of H₂ ¹⁸O. Prog Oceanogr, 35(1):53-80

Bauch D, van der Loeff M R, Andersen N, et al. 2011. Origin of freshwater and polynya water in the Arctic Ocean halocline in summer 2007. Prog Oceanogr, 91(4):482-495

Bourg C, Stievenard M, Jouzel J. 2001. Hydrogen and oxygen isotopic composition of aqueous salt solutions by gas-water equilibration method. Chem Geol, 173(4):331-337

Cai Weijun, Chen Liqi, Chen Baoshan, et al. 2010. Decrease in the CO₂ uptake capacity in an ice-free Arctic Ocean Basin. Science, 329(5991):556-559

Carmack E C, Macdonald R W, Perkin R G, et al. 1995. Evidence for warming of Atlantic water in the Southern Canadian Basin of the Arctic Ocean:results from the Larsen-93 Expedition. Geophys Res Lett, 22(9):1061-1064

Carmack E C. 2000. The Arctic Ocean's freshwater budget:sources, storage and export. In:Lewis E L, Jones E P, Lemke P, et al., eds. The Freshwater Budget of the Arctic Ocean. Netherlands:Springer, 91-106

Chen Min, Huang Yipu, Jin Mingming, et al. 2003. The sources of the upper and lower halocline water in the Canada Basin derived from isotopic tracers. Sci China Series D Earth Sci, 46(6):625-639

Cooper L W, Benner R, McClelland J W, et al. 2005. Linkages among runoff, dissolved organic carbon, and the stable oxygen isotope composition of seawater and other water mass indicators in the Arctic Ocean. J Geophys Res, 110(G2):G02013

Cooper L W, McClelland J W, Holmes R M, et al. 2008. Flow-weighted values of runoff tracers (δ¹⁸O, DOC, Ba, alkalinity) from the six largest Arctic rivers. Geophys Res Lett, 35(18):L18606

Cooper L W, Whitledge T E, Grebmeier J M, et al. 1997. The nutrient, salinity, and stable oxygen isotope composition of Bering and Chukchi Seas waters in and near the Bering Strait. J Geophys Res, 102(C6):12563-12573

Coplen T B, Kendall C. 2000. Stable isotope and oxygen isotope ratios for selected sites of the US Geological Survey's NASQAN and Benchmark surface-water networks. US Geological Survey Open-File Report 00-160, 409

Eicken H, Krouse H R, Kadko D, et al. 2002. Tracer studies of pathways and rates of meltwater transport through Arctic summer sea ice. J Geophys Res, 107(C10):8046

Ekwurzel B, Schlosser P, Mortlock R A, et al. 2001. River runoff, sea ice meltwater, and Pacific water distribution and mean residence times in the Arctic Ocean. J Geophys Res, 106(C5):9075-9092

Giles K A, Laxon S W, Ridout A L, et al. 2012. Western Arctic Ocean freshwater storage increased by wind-driven spin-up of the Beaufort Gyre. Nat Geosci, 5(3):194-197

Grebmeier J M, Cooper L W, DeNiro M J. 1990. Oxygen isotopic composition of bottom seawater and tunicate cellulose used as indicators of water masses in the northern Bering and Chukchi Seas. Limnol Oceanogr, 35(5):1182-1195

Guay C K H, Falkner K K, Muench R D, et al. 2001. Wind-driven transport pathways for Eurasian Arctic river discharge. J Geophys Res, 106(C6):11469-11480

Holloway G, Wang Zeliang. 2009. Representing eddy stress in an Arctic Ocean model. J Geophys Res, 114(C6):C06020

Horita J, Ueda A, Mizukami K, et al. 1989. Automatic δD and δ¹⁸O analyses of multi-water samples using H₂-and CO₂-water equilibration methods with a common equilibration set-up. Int J Rad Appl Instrum Part A Appl Rad Isot, 40(9):801-805

Johnson M A, Polyakov I V. 2001. The Laptev Sea as a source for recent Arctic Ocean salinity changes. Geophys Res Lett, 28(10):2017-2020

Jones E P, Anderson L G. 1986. On the origin of the chemical properties of the arctic ocean halocline. J Geophys Res, 91(C9):10759-10767

Jones E P, Anderson L G, Jutterström S, et al. 2008. Pacific freshwater, river water and sea ice meltwater across Arctic Ocean basins:results from the 2005 Beringia Expedition. J Geophys Res, 113(C8):C08012

Jones E P, Anderson L G, Swift J H. 1998. Distribution of atlantic and pacific waters in the upper Arctic ocean:implications for circulation. Geophys Res Lett, 25(6):765-768

Macdonald R W, McLaughlin F A, Carmack E C. 2002. Fresh water and its sources during the SHEBA drift in the Canada Basin of the Arctic Ocean. Deep-Sea Res I, 49(10):1769-1785

Macdonald R W, Paton D, Carmack E C, et al. 1995. The freshwater budget and under-ice spreading of Mackenzie River water in the Canadian Beaufort Sea based on salinity and ¹⁸O/¹⁶O measurements in water and ice. J Geophys Res, 100(C1):895-920

Melling H, Moore R M. 1995. Modification of halocline source waters during freezing on the Beaufort Sea shelf:evidence from oxygen isotopes and dissolved nutrients. Cont Shelf Res, 15(1):89-113

Morison J, Kwok R, Peralta-Ferriz C, et al. 2012. Changing Arctic Ocean freshwater pathways. Nature, 481(7379):66-70

Newton R, Schlosser P, Martinson D G, et al. 2008. Freshwater distribution in the Arctic Ocean:simulation with a high-resolution model and model-data comparison. J Geophys Res, 113(C5):C05024

Newton R, Schlosser P, Mortlocns in 1999. Sci China Ser D:Earth Sci, 48(8):1312-1320d changes:Results from the 2005 Arctic Ocean Section. J Geophys Res, 118(4):2133-2154

Östlund H G, Hut G. 1984. Arctic Ocean water mass balance from isotope data. J Geophys Res, 89(C4):6373-6382

Pan Hong, Chen Min, Tong Jinlu, et al. 2015. Spatial and temporal variations of freshwater components at a transect near the Bering Strait during 2003-2012. Haiyang Xuebao (in Chinese), 37(11):135-146

Perovich D K, Richter-Menge J A, Jones K F, et al. 2011. Arctic sea-ice melt in 2008 and the role of solar heating. Ann Glaciol, 52(57):355-359

Pfirman S, Haxby W, Eicken H, et al. 2004. Drifting Arctic sea ice archives changes in ocean surface conditions. Geophys Res Lett, 31(19):L19401

Pickart R S, Pratt L J, Torres D J, et al. 2010. Evolution and dynamics of the flow through Herald Canyon in the western Chukchi Sea. Deep-Sea Research Ⅱ, 57(1-2):5-26

Proshutinsky A, Bourke R H, McLaughlin F A. 2002. The role of the Beaufort Gyre in Arctic climate variability:seasonal to decadal climate scales. Geophys Res Lett, 29(23):15-1

Proshutinsky A Y, Johnson M A. 1997. Two circulation regimes of the wind-driven Arctic Ocean. J Geophys Res, 102(C6):12493-12514

Proshutinsky A, Krishfield R, Timmermans M L, et al. 2009. Beaufort Gyre freshwater reservoir:state and variability from observations. J Geophys Res, 114:C00A10

Rudels B, Anderson L G, Jones E P. 1996. Formation and evolution of the surface mixed layer and halocline of the Arctic Ocean. J Geophys Res, 101(C4):8807-8821

Semiletov I P, Savelieva N I, Weller G E, et al. 2000. The dispersion of Siberian river flows into coastal waters:meteorological, hydrological and hydrochemical aspects. In:Lewis E L, Jones E P, Lemke P, et al., eds. The Freshwater Budget of the Arctic Ocean. Netherlands:Springer, 323-366

Shi Jiuxin, Cao Yong, Zhao Jinping, et al. 2005. Distribution of Pacific-origin water in the region of the Chukchi Plateau in the Arctic Ocean in the summer of 2003. Acta Oceanol Sinica, 24(6):12-24

Shimada K, Kamoshida T, Itoh M, et al. 2006. Pacific ocean inflow:influence on catastrophic reduction of sea ice cover in the Arctic Ocean. Geophys Res Lett, 33(8):L08605

Steele M, Morison J, Ermold W, et al. 2004. Circulation of summer Pacific halocline water in the Arctic Ocean. J Geophys Res, 109(C2):C02027

Thompson D W J, Wallace J M. 1998. The Arctic Oscillation signature in the wintertime geopotential height and temperature fields. Geophys Res Lett, 25(9):1297-1300

Tong Jinlu, Chen Min, Qiu Yusheng, et al. 2014. Contrasting patterns of river runoff and sea-ice melted water in the Canada Basin. Acta Oceanol Sinica, 33(6):46-52

Woodgate R A, Aagaard K. 2005. Revising the Bering Strait freshwater flux into the Arctic Ocean. Geophys Res Lett, 32(2):L02602

Woodgate R A, Aagaard K, Weingartner T J. 2006. Interannual changes in the Bering Strait fluxes of volume, heat and freshwater between 1991 and 2004. Geophys Res Lett, 33(15):L15609

Woodgate R A, Weingartner T J, Lindsay R. 2012. Observed increases in Bering Strait oceanic fluxes from the Pacific to the Arctic from 2001 to 2011 and their impacts on the Arctic Ocean water column. Geophys Res Lett, 39(24):L24603

Yamamoto-Kawai M, Carmack E, McLaughlin F. 2006. Nitrogen balance and Arctic throughflow. Nature, 443(7107):43

Yamamoto-Kawai M, McLaughlin F A, Carmack E C, et al. 2008. Freshwater budget of the Canada Basin, Arctic Ocean, from salinity, δ¹⁸O, and nutrients. J Geophys Res, 113(C1):C01007

Yamamoto-Kawai M, McLaughlin F A, Carmack E C, et al. 2009. Surface freshening of the Canada Basin, 2003-2007:river runoff versus sea ice meltwater. J Geophys Res, 114(C1):C00A05

Yamamoto-Kawai M, Tanaka N, Pivovarov S. 2005. Freshwater and brine behaviors in the Arctic Ocean deduced from historical data of δ¹⁸O and alkalinity (1929-2002 AD). J Geophys Res, 110(C10):C10003

Zhao Jinping, Gao Guoping, Jiao Yutian. 2005. Warming in Arctic intermediate and deep waters around Chukchi Plateau and its adjacent regio

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2008年夏季加拿大海盆永久冰区的淡水累积现象

doi: 10.1007/s13131-017-1023-1

计量

出版历程

Accumulation of freshwater in the permanent ice zone of the Canada Basin during summer 2008

计量

出版历程

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