首页|Spatial variability of δ18O and δ2H in North Pacific and Arctic Oceans surface seawater

Spatial variability of δ18O and δ2H in North Pacific and Arctic Oceans surface seawater

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  • 国家科技期刊平台
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This study presents new observations of stable isotopic composition (δ18O, δ2H and deuterium excess) in surface waters of the North Pacific and Arctic Oceans that were collected during the sixth Chinese National Arctic Research Expedition (CHINARE) from mid-summer to early autumn 2014. Seawater δ18O and δ2H decrease with increasing latitudes from 39°N to 75°N, likely a result of spatial variability in evaporation/precipitation processes. This explanation is further confirmed by comparing the δ18O–δ2H relationship of seawater with that of precipitation. However, effects of freshwater inputs on seawater stable isotopic composition are also identified at 30°N–39°N. Furthermore, we find a non-significant relationship between the isotopic parameters (δ2H and δ18O) and salinity from 73°N northwards in the Arctic Ocean, implying that sea ice melting/formation may have some effect. These results suggest that the isotopic parameters δ2H and δ18O are useful for tracing marine hydrological processes.

stable water isotopesseawater salinitysurface seawaterNorth Pacific OceanArctic Ocean

LI Zhiqiang、DING Minghu、WANG Yetang、DU Zhiheng、DOU Tingfeng

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National Marine Environmental Forecasting Center,Beijing 100081,China

State Key Laboratory of Severe Weather and Institute of Tibetan Plateau&Polar Meteorology,Chinese Academy of Meteorological Sciences,Beijing 100081,China

State Key Laboratory of Cryospheric Science,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China

College of Geography and Environment,Shandong Normal University,Jinan 250014,China

College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 100049,China

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国家自然科学基金National Key Basic Research Program of ChinaBasic Research Fund of Chinese Academy of Meteorological SciencesProject for Outstanding Youth Innovation Team in the Universities of Shandong Province

417710642019YFC15091002021Z0062019KJH011

2022

10.13679/j.advps.2021.0053

极地科学进展(英文版)
中国极地研究中心,国家海洋局极地考察办公室 (Polar Research Institute of China, Chinese Arctic and Antarctic Administration)

极地科学进展(英文版)

CSCD
影响因子：0.145
ISSN：1674-9928
年,卷(期)：2022.33(3)
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