海洋微塑料源汇搬运过程的研究进展

张晓栋, 刘志飞, 张艳伟, 赵玉龙

Research Progress on Source-to-Sink Transport Processes of Marine Microplastics

Xiaodong Zhang, Zhifei Liu, Yanwei Zhang, Yulong Zhao

图6 海洋动力状态对海表边界层（<0.25 m）微塑料碎片含量的影响[49,50] （a）海洋表层塑料碎屑含量数据来自708个航次调查结果，碎屑含量超过4×105 p/km2的24个数据点没有显示；（b）航次调查结果（红线）和基于波平均纳维—斯托克斯方程的大尺度涡模拟结果（黑线），模型采用恒定的上浮速度1.4 cm/s；（c）航次调查全部结果（灰点）和海面10 m高度风速5～7 m/s情况下的结果（黑色加号）

Fig.6 Sea surface (<0.25 m)plastic concentrations influenced by ocean dynamic state[49,50] (a) Surface plastic concentrations derived from a total of 708 observations, the 24 largest plastic concentration values greater than 4×105 p/km2 are not shown; (b) Regression lines for the observations (red line) and for the large eddy simulations (black lines) of the wave-averaged Navier-Stokes equation, given a terminal buoyant rise velocity as 1.4 cm/s; (c) Surface plastic concentrations of all observations (gray dots) and subsampled observations (black pluses) for 5＜U10＜7 m/s