title: Tracking the origins of plastic debris across the Coral Sea: A case study from the Ouvéa Island, New Caledonia.
abstract: Contamination of the marine environment by human-made plastic litter is a growing and global problem. Our study attempts to explain the presence of two plastic bottles beached on the Ouvéa Island, in the southwest Pacific Ocean, with trademarks from the Solomon Islands and Papua New Guinea (PNG). We simulate the oceanic drift tracks and associated transit times with a Lagrangian interpretation of the surface currents of a high-resolution ocean model. Our results show that it takes less than 2-3months for drifting objects to connect these archipelagos (New Caledonia, Solomon Islands and PNG) and highlight the role of the meridional component of the circulation rather than the dominant zonal jets. This study shows that the origin or traceability of trash represent valuable information that can be used to test and, ultimately, improve our understanding of ocean circulation.
authors.affiliation: Laboratoire de Physique des Océans, UMR 6523 CNRS-Ifremer-IRD-UBO, Centre Ifremer de Brest, ZI de la Pointe du Diable, 29280 Plouzané, France; UFR Sciences et Techniques, 6 avenue Le Gorgeu, CS 93837, 29238 Brest CEDEX 03, France. Electronic address: christophe.maes@ird.fr.
authors.forename: Christophe
authors.initials: C
authors.lastname: Maes
authors.affiliation: Laboratoire de Physique des Océans, UMR 6523 CNRS-Ifremer-IRD-UBO, Centre Ifremer de Brest, ZI de la Pointe du Diable, 29280 Plouzané, France; UFR Sciences et Techniques, 6 avenue Le Gorgeu, CS 93837, 29238 Brest CEDEX 03, France.
authors.forename: Bruno
authors.initials: B
authors.lastname: Blanke
mesh_terms: D000818:Animals; D005735:Garbage; D006801:Humans; D008542:Melanesia; D008962:Models, Theoretical; D009510:New Caledonia; D010140:Pacific Ocean; D010219:Papua New Guinea; D010969:Plastics / Q000032:analysis*; D014866:Waste Products / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D010969:Plastics; D014866:Waste Products; D014874:Water Pollutants, Chemical
keywords: Coral Sea circulation; Lagrangian dispersion; Meridional drift pathways; Plastic debris pollution; Southwestern Pacific; Transfer times