2024-10-31 ロイヤルメルボルン工科大学(RMIT)
＜関連情報＞
- https://www.rmit.edu.au/news/all-news/2024/august/beach-plastic-monitoring
- https://www.sciencedirect.com/science/article/pii/S0025326X24011019?via%3Dihub
浜辺のプラスチックごみ指数：浜辺のプラスチックを検出する最新の指標 Beached Plastic Debris Index; a modern index for detecting plastics on beaches
Jenna Guffogg, Mariela Soto-Berelov, Chris Bellman, Simon Jones, Andrew Skidmore
Marine Pollution Bulletin Available online: 22 October 2024
DOI:https://doi.org/10.1016/j.marpolbul.2024.117124
Highlights
- Novel index that detects plastic litter from sand and water on beaches
- Detection of sub-pixel plastic accumulation was successful.
- The index outperformed other plastic indices it was compared to.
Abstract
Plastic pollution on shorelines poses a significant threat to coastal ecosystems, underscoring the urgent need for scalable detection methods to facilitate debris removal. In this study, the Beached Plastic Debris Index (BPDI) was developed to detect plastic accumulation on beaches using shortwave infrared spectral features. To validate the BPDI, plastic targets with varying sub-pixel covers were placed on a sand spit and captured using WorldView-3 satellite imagery. The performance of the BPDI was analysed in comparison with the Normalized Difference Plastic Index (NDPI), the Plastic Index (PI), and two hydrocarbon indices (HI, HC). The BPDI successfully detected the plastic targets from sand, water, and vegetation, outperforming the other indices and identifying pixels with <30 % plastic cover. The robustness of the BPDI suggests its potential as an effective tool for mapping plastic debris accumulations along coastlines.
