Spectral reflectance of marine macroplastics in the VNIR and SWIR measured in a controlled environment

Abstract While at least 8 million tons of plastic litter are ending up in our oceans every year and research on marine litter detection is increasing, the spectral properties of wet as well as submerged plastics in natural marine environments are still largely unknown. Scientific evidence-based know...

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Autores principales:	Mehrdad Moshtaghi, Els Knaeps, Sindy Sterckx, Shungudzemwoyo Garaba, Dieter Meire
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e27e0ccfc26e4281bf49a54e68dca650
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spelling	oai:doaj.org-article:e27e0ccfc26e4281bf49a54e68dca6502021-12-02T15:54:06ZSpectral reflectance of marine macroplastics in the VNIR and SWIR measured in a controlled environment10.1038/s41598-021-84867-62045-2322https://doaj.org/article/e27e0ccfc26e4281bf49a54e68dca6502021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84867-6https://doaj.org/toc/2045-2322Abstract While at least 8 million tons of plastic litter are ending up in our oceans every year and research on marine litter detection is increasing, the spectral properties of wet as well as submerged plastics in natural marine environments are still largely unknown. Scientific evidence-based knowledge about these spectral characteristics has relevance especially to the research and development of future remote sensing technologies for plastic litter detection. In an effort to bridge this gap, we present one of the first studies about the hyperspectral reflectances of virgin and naturally weathered plastics submerged in water at varying suspended sediment concentrations and depth. We also conducted further analyses on the different polymer types such as Polyethylene terephthalate (PET), Polypropylene (PP), Polyester (PEST) and Low-density polyethylene (PE-LD) to better understand the effect of water absorption on their spectral reflectance. Results show the importance of using spectral wavebands in both the visible and shortwave infrared (SWIR) spectrum for litter detection, especially when plastics are wet or slightly submerged which is often the case in natural aquatic environments. Finally, we demonstrate in an example how to use the open access data set driven from this research as a reference for the development of marine litter detection algorithms.Mehrdad MoshtaghiEls KnaepsSindy SterckxShungudzemwoyo GarabaDieter MeireNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mehrdad Moshtaghi Els Knaeps Sindy Sterckx Shungudzemwoyo Garaba Dieter Meire Spectral reflectance of marine macroplastics in the VNIR and SWIR measured in a controlled environment
description	Abstract While at least 8 million tons of plastic litter are ending up in our oceans every year and research on marine litter detection is increasing, the spectral properties of wet as well as submerged plastics in natural marine environments are still largely unknown. Scientific evidence-based knowledge about these spectral characteristics has relevance especially to the research and development of future remote sensing technologies for plastic litter detection. In an effort to bridge this gap, we present one of the first studies about the hyperspectral reflectances of virgin and naturally weathered plastics submerged in water at varying suspended sediment concentrations and depth. We also conducted further analyses on the different polymer types such as Polyethylene terephthalate (PET), Polypropylene (PP), Polyester (PEST) and Low-density polyethylene (PE-LD) to better understand the effect of water absorption on their spectral reflectance. Results show the importance of using spectral wavebands in both the visible and shortwave infrared (SWIR) spectrum for litter detection, especially when plastics are wet or slightly submerged which is often the case in natural aquatic environments. Finally, we demonstrate in an example how to use the open access data set driven from this research as a reference for the development of marine litter detection algorithms.
format	article
author	Mehrdad Moshtaghi Els Knaeps Sindy Sterckx Shungudzemwoyo Garaba Dieter Meire
author_facet	Mehrdad Moshtaghi Els Knaeps Sindy Sterckx Shungudzemwoyo Garaba Dieter Meire
author_sort	Mehrdad Moshtaghi
title	Spectral reflectance of marine macroplastics in the VNIR and SWIR measured in a controlled environment
title_short	Spectral reflectance of marine macroplastics in the VNIR and SWIR measured in a controlled environment
title_full	Spectral reflectance of marine macroplastics in the VNIR and SWIR measured in a controlled environment
title_fullStr	Spectral reflectance of marine macroplastics in the VNIR and SWIR measured in a controlled environment
title_full_unstemmed	Spectral reflectance of marine macroplastics in the VNIR and SWIR measured in a controlled environment
title_sort	spectral reflectance of marine macroplastics in the vnir and swir measured in a controlled environment
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e27e0ccfc26e4281bf49a54e68dca650
work_keys_str_mv	AT mehrdadmoshtaghi spectralreflectanceofmarinemacroplasticsinthevnirandswirmeasuredinacontrolledenvironment AT elsknaeps spectralreflectanceofmarinemacroplasticsinthevnirandswirmeasuredinacontrolledenvironment AT sindysterckx spectralreflectanceofmarinemacroplasticsinthevnirandswirmeasuredinacontrolledenvironment AT shungudzemwoyogaraba spectralreflectanceofmarinemacroplasticsinthevnirandswirmeasuredinacontrolledenvironment AT dietermeire spectralreflectanceofmarinemacroplasticsinthevnirandswirmeasuredinacontrolledenvironment
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Spectral reflectance of marine macroplastics in the VNIR and SWIR measured in a controlled environment

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