A double-halocline structure in the Canada Basin of the Arctic Ocean |
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Authors: | SHI Jiuxin ZHAO Jinping LI Shujiang CAO Yong and QU Ping |
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Institution: | 1.First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China2.College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266003, China3.Shanghai Oceanic Environment Forecast Center, State Oceanic Administration, Shanghai 200137, China |
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Abstract: | A year-round halocline is a particular hydrographic structure in the upper Arctic Ocean. On the basis of an analysis of the hydrographic data collected in the Arctic Ocean, it is found that a double-halocline structure exists in the upper layer of the southern Canada Basin,which is absolutely different from the Cold Halocline Layer (CHL) in the Eurasian Basin. The Pacific-origin water is the primary factor in the formation of the double-halocline structure. The upper halocline lies between the summer modification and the winter modification of the Pacific-origin water while the lower halocline results from the Pacific-origin water overlying upon the Atlantic-origin water. Both haloclines are all the year-round although seasonal and interannual variations have been detected in the historical data. |
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Keywords: | halocline salinity Pacific-origin water Canada Basin Arctic Ocean |
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