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首页> 外文期刊>Oceanology >Interannual Variations of Nutrients and Primary Production over the Southeastern Bering Sea Shelf during the Spring of 1997,1998,and 1999
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Interannual Variations of Nutrients and Primary Production over the Southeastern Bering Sea Shelf during the Spring of 1997,1998,and 1999

机译：1997、1998和1999年春季东南白令海陆架养分和初级生产力的年际变化

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摘要

The southeastern Bering Sea shelf experienced dramatic changes in large-scale climate conditions and local weather conditions during 1997,1998,and 1999.We investigated the changes in the nutrient distribution and primary production in response to the changing physical condition over the shelf region.The temperature and salinity profiles showed that sea ice conditions and wind-mixing events strongly influenced the hydrographic conditions.Biological utilization and physical process,such as horizontal advection below the pycnocline,played an important role in the distribution and interannual variation of nutrients.The distribution of temperature and ammonium across the shelf suggested that there was offshore transport of the middle shelf water at mid-depths over the outer shelf,which may export materials from the middle shelf to the outer shelf and shelf break.The distribution of the carbon and nitrogen uptake rates showed large interannual differences due to variations in the development of stratification and nutrient concentrations that resulted from variations in the sea ice dynamics and wind mixing over the shelf region.The occurrence of a high amount of ammonium in the early spring may affect the nitrate utilization and result in an increase of the total primary production.
机译：白令海东南部的架子在1997、1998和1999年经历了大规模气候条件和当地天气条件的剧烈变化。我们调查了响应架子区域物理条件变化的养分分布和初级生产的变化。温度和盐度剖面表明，海冰条件和风混合事件强烈影响着水文条件。生物利用和物理过程（例如比可可林以下的水平对流）在养分的分布和年际变化中起着重要作用。架子上的温度和铵盐表明中间架子上的水在外架子上有中深度的海上输送，这可能将物料从中间架子输出到架子和架子上的破碎处。碳和氮的吸收分布率因发展变化而出现较大的年际差异陆架区域海冰动力学和风混合变化导致的分层和养分浓度变化。早春大量铵盐的出现可能影响硝酸盐的利用并导致总初级产量的增加。

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