Article
Origins and features of oil slicks in the Bohai Sea detected from satellite SAR images
Oil slickswere detected using satellite Synthetic Aperture Radar (SAR) images in 2011.We investigated potential origins and regional and seasonal features of oil slick in the Bohai Sea. Distance between oil slicks and potential origins (ships, seaports, and oil exploitation platforms) and the angle atwhich oil slicksmove relative to potential driving forces were evaluated. Most oil slicks were detected along main ship routes rather than around seaports and oil exploitation platforms. Few oil slicks were detected within 20 km of seaports. Directions of oil slicksmovement were much more strongly correlated with directions of ship routes than with directions of winds and currents. These findings support the premise that oil slicks in the Bohai Seamost likely originate fromillegal disposal of oil-pollutedwastes from ships. Seasonal variation of oil slicks followed an annual cycle,with a peak in August and a trough in December.
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Origins of public maritime history | en | |
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