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DOI	10.1016/j.marpolbul.2020.111548
	Numerical modeling of the beach process of marine plastics: 2. A diagnostic approach with onshore-offshore advection-diffusion equations for buoyant plastics
	Hinata H.; Ohno K.; Sagawa N.; Kataoka T.; Takeoka H.
发表日期	2020
ISSN	0025326X
卷号	160
英文摘要	A model is proposed for the beach process of buoyant marine plastics, specifically its beaching and backwashing, by introducing beaching and backwashing diffusion coefficients and the onshore-offshore advection-diffusion equations of plastics for the upper layers in the beach and adjacent coastal sea. The backwashing diffusion coefficient was estimated from the average residence time of the beached plastics and the beach width, and then the beaching diffusion coefficient was estimated from the flux-balance assumption between the beaching and backwashing fluxes. Finite difference calculations in the staggered-grid system demonstrated that the amount of beached plastics responds as predicted by the linear system analysis when the beach had an exponential decay type of unit impulse response regardless of the ratio between the residence time and the period of beaching flux fluctuation from the nearshore. The condition in which the flux balance assumption holds was also discussed. © 2020 Elsevier Ltd
英文关键词	Backwashing diffusion coefficient; Beach process; Beaching diffusion coefficient; Flux balance assumption; Marine plastic; Residence time
语种	英语
scopus关键词	Advection; Beaches; Buoyancy; Elastomers; Impulse response; Linear systems; Offshore oil well production; Partial differential equations; Plastic products; Advection-diffusion equation; Average residence time; Diagnostic approach; Exponential decays; Finite difference calculations; Marine plastics; Staggered grid; Unit impulse response; Diffusion; plastic; advection-diffusion equation; beach; buoyancy; coastal zone; marine pollution; numerical model; plastic waste; Article; beaching flux fluctuation; calculation; controlled study; diffusion coefficient; environmental parameters; flux balance assumption; linear system; mathematical analysis; mathematical model; mathematical parameters; onshore offshore advection diffusion equation; prediction; retention time; sea pollution; seashore; staggered grid system; environmental monitoring; system analysis; waste; Environmental Monitoring; Plastics; Systems Analysis; Waste Products
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148632
作者单位	Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan; Tokyo University of Science, 2461 Yamazaki, Noda, Chiba, 278-8510, Japan
推荐引用方式 GB/T 7714	Hinata H.,Ohno K.,Sagawa N.,et al. Numerical modeling of the beach process of marine plastics: 2. A diagnostic approach with onshore-offshore advection-diffusion equations for buoyant plastics[J],2020,160.
APA	Hinata H.,Ohno K.,Sagawa N.,Kataoka T.,&Takeoka H..(2020).Numerical modeling of the beach process of marine plastics: 2. A diagnostic approach with onshore-offshore advection-diffusion equations for buoyant plastics.Marine Pollution Bulletin,160.
MLA	Hinata H.,et al."Numerical modeling of the beach process of marine plastics: 2. A diagnostic approach with onshore-offshore advection-diffusion equations for buoyant plastics".Marine Pollution Bulletin 160(2020).