| Application of an optical nitrate profiler to high-and low-turbidity coastal shelf waters |
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| 作者姓名： | Yanpei Zhuang Yangjie Li Xizhen Liu Shichao Tian Bin Wang Zhongqiang Ji Haiyan Jin Jianfang Chen |
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| 作者单位： | 1. Polar and Marine Research Institute, Jimei University;2. Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources;3. Marine Monitoring and Forecasting Center of Zhejiang Province;4. Institute for Geology, University of Hamburg;5. State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources |
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| 摘 要： | Here, we report the results of high-resolution nitrate measurements using an optical nitrate profiler(in situ ultraviolet spectrophotometer, ISUS) along transect across a high-turbidity shelf(East China Sea) and a lowturbidity shelf(Chukchi Sea). The ISUS-measured nitrate concentrations closely reproduced the results measured by conventional bottle methods in low-turbidity waters. However, for high-turbidity waters of the East China Sea(salinity<30), a correction factor of 1.19 was required t...
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| 关 键 词： | high-resolution nitrate measurements in situ ultraviolet spectrophotometer(ISUS) nutrient dynamics nitracline East China Sea Chukchi Sea |
Application of an optical nitrate profiler to high- and low-turbidity coastal shelf waters |
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| Yanpei Zhuang,Yangjie Li,Xizhen Liu,Shichao Tian,Bin Wang,Zhongqiang Ji,Haiyan Jin,Jianfang Chen.Application of an optical nitrate profiler to high-and low-turbidity coastal shelf waters[J].Acta Oceanologica Sinica,2023,42(1):103-108. |
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| Authors: | Yanpei Zhuang Yangjie Li Xizhen Liu Shichao Tian Bin Wang Zhongqiang Ji Haiyan Jin Jianfang Chen |
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| Abstract: | Here, we report the results of high-resolution nitrate measurements using an optical nitrate profiler (in situ ultraviolet spectrophotometer, ISUS) along transect across a high-turbidity shelf (East China Sea) and a low-turbidity shelf (Chukchi Sea). The ISUS-measured nitrate concentrations closely reproduced the results measured by conventional bottle methods in low-turbidity waters. However, for high-turbidity waters of the East China Sea (salinity<30), a correction factor of 1.19 was required to match the standard bottle measurements. The high-resolution ISUS data revealed subtle spatial variability (e.g., a subsurface nitrate minimum) that may have been missed if based solely on bottle results. Four main structures of the nitracline on the East China Sea are apparent from the ISUS nitrate profile. High-resolution nitrate data are important for studying nitrate budgets and nutrient dynamics on continental shelves. |
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| Keywords: | high-resolution nitrate measurements in situ ultraviolet spectrophotometer (ISUS) nutrient dynamics nitracline East China Sea Chukchi Sea |
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