Fig. 1. Micrographs and geometric models of several common cyanobacteria. (a1)(a2) Binuclear shell cyanobacteria particle aggregation; (b1)(b2) tetra-core shell cyanobacteria particle aggregation; (c1)(c2) cylindrical filamentous nuclear shell cyanobacteria particle aggregation; (d1)(d2) ring-shaped filamentous nuclear shell cyanobacteria particle aggregation; (e1)(e2) S-shaped filamentous nuclear shell cyanobacteria particle aggregation

Fig. 2. Relationships between optical parameters of five core-shell cyanobacteria models and single particle size. (a) Extinction coefficient; (b) absorption coefficient; (c) scattering coefficient

Fig. 3. Influence of intermediate mixed layer on scattering intensity of each model. (a) Double ellipsoid model; (b) four ellipsoid model; (c) cylindrical filamentous model; (d) annular filamentous model; (e) S-shaped filamentous model

Fig. 4. Effects of particle sizes on scattering intensity of each model. (a) Double ellipsoid model; (b) four ellipsoid model; (c) cylindrical filamentous model; (d) annular filamentous model; (e) S-shaped filamentous model

Fig. 5. Ratio of scattering matrix elements versus scattering angle for models of double ellipsoid and four ellipsoid cyanobacteria with different particle sizes. (a)(d) -S₁₂/S₁₁; (b)(e) S₃₃/S₁₁; (c)(f) S₃₄/S₁₁