TY - JOUR T1 - Large impact of Stokes drift on the fate of surface floating debris in the South Indian Basin A1 - Dobler,Delphine A1 - Huck,Thierry A1 - Maes,Christophe A1 - Grima,Nicolas A1 - Blanke,Bruno A1 - Martinez,Elodie A1 - Ardhuin,Fabrice AD - Univ Brest, CNRS, IRD, Ifremer Laboratoire d’Océanographie Physique et Spatiale (LOPS, UMR 6523), IUEM, Brest, France AD - Univ Brest, CNRS, IRD, Ifremer Laboratoire d’Océanographie Physique et Spatiale (LOPS, UMR 6523), IUEM, Brest, France AD - Univ Brest, CNRS, IRD, Ifremer Laboratoire d’Océanographie Physique et Spatiale (LOPS, UMR 6523), IUEM, Brest, France UR - https://doi.org/10.1016/j.marpolbul.2019.07.057 DO - 10.1016/j.marpolbul.2019.07.057 KW - Marine debris KW - Microplastics KW - Stokes drift KW - Indian Ocean KW - Lagrangian analysis KW - Ocean surface pathways N2 - In the open ocean, floating surface debris such as plastics concentrate in five main accumulation zones centered around 30° latitude, far from highly turbulent areas. Using Lagrangian advection of numerical particles by surface currents from ocean model reanalysis, previous studies have shown long-distance connection from the accumulation zones of the South Indian to the South Pacific oceans. An important physical process affecting surface particles but missing in such analyses is wave-induced Stokes drift. Taking into account surface Stokes drift from a wave model reanalysis radically changes the fate of South Indian particles. The convergence region moves from the east to the west of the basin, so particles leak to the South Atlantic rather than the South Pacific. Stokes drift changes the South Indian sensitive balance between Ekman convergence and turbulent diffusion processes, inducing either westward entrainment in the north of the accumulation zone, or eastward entrainment in the south. Y1 - 2019/11 PB - Elsevier BV JF - Marine Pollution Bulletin SN - 0025-326X VL - 148 SP - 202 EP - 209 ID - 62320 ER -