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首页> 外文期刊>Marine pollution bulletin >A 3D numerical model to Track Marine Plastic Debris (TrackMPD): Sensitivity of microplastic trajectories and fates to particle dynamical properties and physical processes
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A 3D numerical model to Track Marine Plastic Debris (TrackMPD): Sensitivity of microplastic trajectories and fates to particle dynamical properties and physical processes

机译：跟踪海洋塑料碎片（TrackMPD）的3D数值模型：微粒轨迹和命运对颗粒动力学特性和物理过程的敏感性

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摘要

Numerical modelling is a key tool in understanding and determining the sources, trajectories and fates of microplastic debris (MPD). In this study, we introduce TrackMPD, a new modelling framework for the 3D transport of marine debris. TrackMPD fills the gaps in previous models by: (1) using a three-dimensional approach; (2) providing compatibility with a variety of ocean models; and (3) including a wide range of physical processes (advection, dispersion, windage, sinking, settling, beaching and re-floating) and MPD behaviours that depend on particle dynamical properties, and the fouling and degradation states. We implement a sensitivity analysis based on 44 scenarios to assess the relative importance of the different processes and behaviours on the MPD trajectories and fates. Results show that the MPD dynamical properties that impact their sinking, in particular plastic density and biofilm thickness and density, have the biggest effect on the MPD transport, followed by turbulent dispersion and washing-off.
机译：数值建模是了解和确定微塑性碎屑（MPD）的来源，轨迹和命运的关键工具。在这项研究中，我们介绍了TrackMPD，这是一种用于海洋垃圾3D传输的新建模框架。 TrackMPD通过以下方式填补了以前模型中的空白：（1）使用三维方法； （2）提供与各种海洋模型的兼容性； （3）包括各种物理过程（对流，弥散，风阻，下沉，沉降，滩涂和再漂浮）和MPD行为，这些行为取决于粒子的动力学特性以及结垢和降解状态。我们基于44种情况实施敏感性分析，以评估MPD轨迹和命运上不同过程和行为的相对重要性。结果表明，影响其下沉的MPD动力学特性，特别是塑料密度以及生物膜厚度和密度，对MPD的运输影响最大，其次是湍流分散和冲洗。

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  • 来源
    《Marine pollution bulletin》 |2019年第4期|256-272|共17页
  • 作者

    Jalon-Rojas Isabel; Wang Xiao Hua; Fredj Erick;

  • 作者单位

    UNSW Canberra, Sch Phys Environm & Math Sci, Sino Australian Res Ctr Coastal Management, Canberra, ACT, Australia;

    UNSW Canberra, Sch Phys Environm & Math Sci, Sino Australian Res Ctr Coastal Management, Canberra, ACT, Australia|SOA, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou, Zhejiang, Peoples R China;

    Jerusalem Coll Technol, Jerusalem, Israel;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Lagrangian tracking model; Marine plastic debris; Microplastics; Physical processes; Dynamical properties; Biofouling;

    机译：拉格朗日跟踪模型;海洋塑料碎片;微塑料;物理过程;动力学特性;生物污染;

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