Incorporating terrain specific beaching within a lagrangian transport plastics model for Lake Erie.

Autor:	Daily J; School of Mathematical Sciences, Rochester Institute of Technology, Rochester, NY United States., Onink V; Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland.; Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland.; Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, The Netherlands., Jongedijk CE; Department of Civil and Environmental Engineering, Imperial College London, London, United Kingdom., Laufkötter C; Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland.; Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland., Hoffman MJ; School of Mathematical Sciences, Rochester Institute of Technology, Rochester, NY United States.
Jazyk:	angličtina
Zdroj:	Microplastics and nanoplastics [Microplast nanoplast] 2021; Vol. 1 (1), pp. 19. Date of Electronic Publication: 2021 Dec 11.
DOI:	10.1186/s43591-021-00019-7
Abstrakt:	Mass estimates of plastic pollution in the Great Lakes based on surface samples differ by orders of magnitude from what is predicted by production and input rates. It has been theorized that a potential location of this missing plastic is on beaches and in nearshore water. We incorporate a terrain dependent beaching model to an existing hydrodynamic model for Lake Erie which includes three dimensional advection, turbulent mixing, density driven sinking, and deposition into the sediment. When examining parameter choices, in all simulations the majority of plastic in the lake is beached, potentially identifying a reservoir holding a large percentage of the lake's plastic which in previous studies has not been taken into account. The absolute amount of beached plastic is dependent on the parameter choices. We also find beached plastic does not accumulate homogeneously through the lake, with eastern regions of the lake, especially those downstream of population centers, most likely to be impacted. This effort constitutes a step towards identifying sinks of missing plastic in large bodies of water. Competing Interests: Competing interestsThe authors declare that they have no competing interests. (© The Author(s) 2021.)
Databáze:	MEDLINE
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