基于三维水力动力学粒子跟踪模型的微塑料运输和分散的模拟在北湾
Changhao Sun1,2,3,4, Yao Guan1,2,3,4, Wenhao Hou1,2,3,4
1School of Resources, Environment and Materials, Guangxi University, Nanning, China.
Frontiers in toxicology
|December 22, 2025
概括
贝布湾的微塑料运输是由海洋流和季风驱动的. 数字建模揭示了季节性分散模式和高度区域,受台风等极端天气事件的影响.
科学领域:
- 海洋污染 海洋污染
- 海洋学 海洋学 海洋学
- 环境建模环境建模
背景情况:
- 贝布湾是一个半封闭的海湾,面临着微塑料污染的挑战.
- 微塑料的运输受到包括季风和海洋循环在内的复杂因素的影响.
研究的目的:
- 开发和验证一个数值模型来模拟北湾的微塑料运输.
- 调查微塑料分散的主要驱动因素和季节性变化.
主要方法:
- 将3D水力动力学模型与拉格朗的粒子跟踪模块相合.
- 模型与观测数据的验证,实现高精度 (空间偏差<6公里,相对标准偏差<7%).
主要成果:
- 海洋水力动力学是对微塑料运输的主要控制,与季风的影响.
- 季节性变化显示出大量的春季分散 (205公里) 和夏季近海高度区域 (~20μg/m3).
- 台风"雅吉"大大提高了循环和微塑料的运输.
结论:
- 这项研究为了解北湾的微塑料分散提供了一个强大的模型.
- 季节性和水力动力学条件极大地影响了微塑料的分布模式.
- 这些发现为区域微塑料污染管理提供了理论基础.
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