Detection of Macroalgal Bloom from Sentinel−1 Imagery
Sree Juwel Kumar Chowdhury,
Ahmed Harun-Al-Rashid,
Chan-Su Yang
et al.
Abstract:The macroalgal bloom (MAB) is caused by brown algae forming a floating mat. Most of its parts stay below the water surface, unlike green algae; thus, its backscatter value becomes weaker in the synthetic aperture radar (SAR) images, such as Sentinel−1, due to the dampening effect. Thus, brown algae patches appear to be thin strands in contrast to green algae and their detection by using a global threshold, which is challenging due to a similarity between the MAB patch and the ship’s sidelobe in the case of pix… Show more
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