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Amala Mahadevan (Woods Hole Oceanographic Institution, USA)
Date & Time
Mon, 13 August 2018, 15:00 to 16:00
Emmy Noether Seminar Room, ICTS Campus, Bangalore

Particles of organic matter produced in the sunlit surface layers of the ocean through the growth and  grazing of phytoplankton, sink gradually, sequestering carbon in the deep ocean. The particles are altered by bacterial remineralization and shrink with time. As they sink, they are transported by the oceanic flow and become sorted by size, because the slowest sinking (and smallest) particles experience higher velocities near the surface, while deeper particles are advected more slowly. Here we estimate the sinking flux of particles as a function of their size distribution and examine how the size distribution is altered with depth. We estimate the patchy distribution of the particle flux due to segregation by the flow.