e-GEOS, via Tiburtina 965, Rome, Italy.
Mar Pollut Bull. 2021 Jul;168:112457. doi: 10.1016/j.marpolbul.2021.112457. Epub 2021 May 8.
Marine litter patches were detected from Sentinel-2 offshore Hawaii's Big Island (Hawaii) within 10 miles from the coast in the prevalent windward direction (NE), for a total sea surface of 3.0 km. The patches have a filament-like shape with different orientation, lengths of several kilometers and width from tens to hundreds of meters. A comparison with the typical spectra of "sargassum" and "seaweed" patches emphasized differences in the red edge portion of the spectrum for large part of the filaments. Frequency of plastic pollution on Hawaiian beaches and spectral characteristics of the filaments suggest these patches largely consist of plastic debris. A detection method of plastic litter for Sentinel-2 data resampled at 20 m resolution based on the analysis of the red edge bands is proposed.
在盛行风方向（东北）距海岸 10 英里范围内，从 Sentinel-2 卫星探测到夏威夷大岛（夏威夷）近海的海洋垃圾斑块，海面总面积为 3.0 平方公里。这些斑块呈丝状，具有不同的方向，长度为数公里，宽度从几十米到几百米不等。与“马尾藻”和“海藻”斑块的典型光谱进行比较，强调了大部分丝状物质光谱的红边部分的差异。夏威夷海滩上塑料污染的频率和丝状物质的光谱特征表明，这些斑块主要由塑料碎片组成。提出了一种基于红边波段分析的、针对 Sentinel-2 数据重采样至 20 米分辨率的塑料垃圾探测方法。
