...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Acta Oceanologica Sinica >Particle flux through the Huanghai Sea cold water mass
【24h】

Particle flux through the Huanghai Sea cold water mass

机译：穿过黄海冷水团的颗粒通量

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

Settling particulate matter (SPM) was collected by using sediment traps at four stations in a survey section from Qingdao to Cheju-do across the Huanghai Sea cold water mass (HSCWM), in August 2002. The sediment traps were planted in three layers: the upper layer of the thermocline (ULT) above the HSCWM, the lower layer of the thermocline (LLT), and the bottom layer of water column (BL) To determine the particle flux, the contents of organic carbon (POC), organic nitrogen (PON), total carbon (PC), and total phosphorous (PP) in SPM were analyzed, and two flux models (Ⅰ and Ⅱ) were improved to calculate the resuspension ratio, with an assumption in Model Ⅰ that the vertical flux of SPM in the LLT equals the net vertical flux of SPM in the whole water column. An X value, i.e., the fraction of the resuspension flux originating from the surficial sediments nearby the sampling station, was deduced from Model Ⅰ to estimate the contribution of lateral currents to the total resuspension flux. The results showed that inorganic particles, fecal pellets, and miscellaneous aggregates were the major types of SPM in the HSCWM, and the contents of POC, PON, PC, and PP all decreased with water depth. A great deal of fecal pellets found in the LLT indicates that the main space producing biogenic SPM is the thermocline, and especially the LLT, where the C/N ratio is lower than that in the ULT. The resuspension ratios, 90%~96% among stations, imply strong impact of resuspension on particle flux in the BL. These values were not significantly different between the two flux models, suggesting that the hypothesis in Model Ⅰ that the flux in the LLT equaling the net flux to the bottom is acceptable for shallow waters with stratification like the HSCWM. The POC export ratio from the HSCWM ranges from 35% to 68%. It benefits from the short sinking distance in shallow water. The upwelling in the HSCWM enhanced the POC flux through the water mass, and the lateral currents provides up to being greater than 50% of resuspension flux in the BL according to evaluation of the X value.
机译：2002年8月，在青岛至济州岛跨黄海冷水团（HSCWM）的一个调查区的四个站点，使用沉积物收集器收集了沉降颗粒物（SPM）。沉积物收集器分为三层： HSCWM上方的高温层（ULT）的上层，高温层（LLT）的下层和水柱（BL）的下层要确定颗粒通量，有机碳（POC），有机氮（分析了SPM中的PON，总碳（PC）和总磷（PP），并改进了两个通量模型（Ⅰ和Ⅱ）以计算重悬比，其中在模型Ⅰ中假设SPM的垂直通量为LLT等于整个水柱中SPM的净垂直通量。从模型Ⅰ推导出X值，即来自采样站附近表层沉积物的重悬通量的分数，以估算横向电流对总重悬通量的贡献。结果表明，无机颗粒，粪便颗粒和其他聚集体是HSCWM中SPM的主要类型，POC，PON，PC和PP的含量均随水深而降低。在LLT中发现了大量粪便颗粒，表明产生生物SPM的主要空间是温跃层，尤其是LLT，其C / N比低于ULT。站点之间的重悬率在90％〜96％之间，这说明重悬对BL中的粒子通量有很大的影响。在两个通量模型之间，这些值没有显着差异，这表明在模型Ⅰ中，LLT中的通量等于到底部的净通量的假设对于像HSCWM那样具有分层的浅水是可接受的。 HSCWM的POC出口比例在35％至68％之间。它受益于在浅水中的短沉距离。 HSCWM中的上升流增强了通过水团的POC通量，并且根据X值的评估，横向电流最多提供BL中重悬浮通量的50％以上。

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