| 2014年大西洋水在楚科奇边陲区域的上边界混合 |
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| 引用本文： | 钟文理,郭桂军,赵进平,李涛,王晓宇,牟龙江.2014年大西洋水在楚科奇边陲区域的上边界混合[J].海洋学报(英文版),2018,37(3):31-41. |
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| 作者姓名： | 钟文理 郭桂军 赵进平 李涛 王晓宇 牟龙江 |
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| 作者单位： | 中国海洋大学物理海洋重点实验室, 青岛,中国海洋大学物理海洋重点实验室, 青岛;国家海洋局第一研究所海洋与气候研究中心, 青岛,中国海洋大学物理海洋重点实验室, 青岛,中国海洋大学物理海洋重点实验室, 青岛,中国海洋大学物理海洋重点实验室, 青岛,中国海洋大学物理海洋重点实验室, 青岛;国家海洋局国家海洋环境预报中心海洋灾害预报技术研究重点实验室, 北京 |
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| 基金项目： | The Key Project of Chinese Natural Science Foundation under contract No. 41330960; the National Basic Research Program (973 Program) of China under contract No. 2015CB953902; the Ph D Programs Foundation of Ministry of Education of China under contract No. 20130132110021; the National Natural Science Foundation of China under contract No. 41706211. |
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| 摘 要： | This study presents an analysis of the CTD data and the turbulent microstructure data collected in 2014, the turbulent mixing environment above the Atlantic Water(AW) around the Chukchi Borderland region is studied.Surface wind becomes more efficient in driving the upper ocean movement along with the rapid decline of sea ice,thus results in a more restless interior of the Arctic Ocean. The turbulent dissipation rate is in the range of4.60×10~(–10)~(–3.31×10~(–9) W/kg with a mean value of 1.33×10~(–9) W/kg, while the diapycnal diffusivity is in the range of1.45×10~(–6)–1.46×10~(–5)m~2/s with a mean value of 4.84×10~(–6) m~2/s in 200–300 m(above the AW). After investigating on the traditional factors(i.e., wind, topography and tides) that may contribute to the turbulent dissipation rate, the results show that the tidal kinetic energy plays a dominating role in the vertical mixing above the AW. Besides, the swing of the Beaufort Gyre(BG) has an impact on the vertical shear of the geostrophic current and may contribute to the regional difference of turbulent mixing. The parameterized method for the double-diffusive convection flux above the AW is validated by the direct turbulent microstructure results.
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| 关 键 词： | 大西洋水 楚科奇边陲 湍耗散率 湍扩散率 表面应力 |
| 收稿时间： | 2017/5/9 0:00:00 |
Turbulent mixing above the Atlantic Water around the Chukchi Borderland in 2014 |
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| ZHONG Wenli,GUO Guijun,ZHAO Jinping,LI Tao,WANG Xiaoyu and MU Longjiang.Turbulent mixing above the Atlantic Water around the Chukchi Borderland in 2014[J].Acta Oceanologica Sinica,2018,37(3):31-41. |
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| Authors: | ZHONG Wenli GUO Guijun ZHAO Jinping LI Tao WANG Xiaoyu and MU Longjiang |
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| Institution: | Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao 266100, China,Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao 266100, China;Center for Ocean and Climate Research, The First Institute of Oceanography, Qingdao 266061, China,Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao 266100, China,Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao 266100, China,Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao 266100, China and Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao 266100, China;Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, State Oceanic Administration, Beijing 100081, China |
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| Abstract: | This study presents an analysis of the CTD data and the turbulent microstructure data collected in 2014, the turbulent mixing environment above the Atlantic Water (AW) around the Chukchi Borderland region is studied. Surface wind becomes more efficient in driving the upper ocean movement along with the rapid decline of sea ice, thus results in a more restless interior of the Arctic Ocean. The turbulent dissipation rate is in the range of 4.60×10-10-3.31×10-9 W/kg with a mean value of 1.33×10-9 W/kg, while the diapycnal diffusivity is in the range of 1.45×10-6-1.46×10-5 m2/s with a mean value of 4.84×10-6 m2/s in 200-300 m (above the AW). After investigating on the traditional factors (i.e., wind, topography and tides) that may contribute to the turbulent dissipation rate, the results show that the tidal kinetic energy plays a dominating role in the vertical mixing above the AW. Besides, the swing of the Beaufort Gyre (BG) has an impact on the vertical shear of the geostrophic current and may contribute to the regional difference of turbulent mixing. The parameterized method for the double-diffusive convection flux above the AW is validated by the direct turbulent microstructure results. |
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| Keywords: | Atlantic Water Chukchi Borderland turbulent dissipation rate diapycnal diffusive surface stress |
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