...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research, C. Oceans: JGR >Macroscale-wide nutrient inversions in the subsurface layer of the Japan Sea during summer
【24h】

Macroscale-wide nutrient inversions in the subsurface layer of the Japan Sea during summer

机译：夏季日本海表层大范围的养分反转

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The nutrient concentrations at depths of 0–200 m in the southern area of the Japan Sea were investigated at 97 stations during six cruises between June and October in 2013 and 2014. The nutrient concentrations at the surface were depleted to less than 0.1 μM, except for silicates, which remained at 0.8–5 μM, and increased below the nutricline, at depths of 20–125 m. The vertical profiles of nitrate, silicate, and/or phosphate concentrations between 131°30'E–139°40'E and 35°50'N–40°40'N showed a peak in the subsurface layer at 40, 71, and 6 stations, respectively, and nutrient inversions occurred at macroscale widths. The subsurface nutrient maximum occurred at depths of 20–150 m in waters at temperatures of 15–16°C and potential densities of 25.3–25.5 σ_θ, on average. The depths of the subsurface nutrient maximum were generally associated with a salinity maximum originating in the bottom water of the shallow Tsushima Strait. The nutrient inversions were disturbed by phytoplankton consumption, as indicated by the presence of the subsurface chlorophyll maximum at the same depth or below the salinity maximum at stations without nutrient inversions. Therefore, it was inferred that remineralization of nutrients near the bottom, from the East China Sea to the Tsushima Strait, and horizontal advection by the Tsushima Warm Current below the euphotic layer induced macroscale subsurface nutrient inversions in the southern Japan Sea.
机译：在2013年至2014年6月至10月的六次航行中，对日本海南部地区0-200 m深度处的营养物浓度进行了调查。水面营养物浓度被消耗至小于0.1μM，除了硅酸盐的含量保持在0.8–5μM，并在营养线以下增加，深度为20–125 m。在131°30'E–139°40'E和35°50'N–40°40'N之间的硝酸盐，硅酸盐和/或磷酸盐浓度的垂直剖面在40、71和70分别有6个站，养分反转发生在宏观尺度上。在15–16°C的温度和平均25.3–25.5σ_θ的潜在密度下，水下养分最大值出现在20–150 m的深度。地下养分最大值的深度通常与源自浅津马岛海峡底部水的盐分最大值有关。浮游植物的消耗扰动了养分的转化，如在没有养分转化的站点，在相同深度或低于最大盐度的地下叶绿素最大值的存在所表明的。因此，可以推断出，从东海到对马海峡附近的海底附近的矿物质再矿化，以及对流层下方对马海流对流的平流，在日本海南部引起了宏观的地下营养反演。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号