We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
A particle tracking model approach to determine the dispersal of riverine plastic debris released into the Indian Ocean
AI summary Read the abstract
Researchers developed a particle tracking model to simulate the dispersal of riverine plastic debris released into the Indian Ocean from surrounding landmasses. The study found that plastic accumulation on beaches peaked during monsoon seasons, with ocean currents, wind, and wave action driving distinct transport patterns, providing valuable data for identifying high-risk coastal areas and informing cleanup strategies.
Although the Indian Ocean receives a large amount of land-based plastic waste, the studies on pathways of riverine plastic debris are limited to date. Therefore, a particle tracking model that included ocean surface currents, horizontal diffusion, Stokes drift, windage, and beaching/re-drifting processes was developed to reproduce the behavior of riverine plastic debris in the Indian Ocean. The modeled particles were released in the model domain based on riverine plastic debris database. The maximum abundance of beached particles occurred during the southwesterly monsoon season, particularly in the Bay of Bengal. The particles released from the rivers were trapped in the northern Indian Ocean unless both Stokes drift and windage were excluded from transportation velocity. These results suggest that the riverine plastic debris was trapped in the northern Indian Ocean until it fragmented into less buoyant small microplastics drifting in the subsurface layer, free from windage and Stokes drift at increasing depths.
More Papers Like This
Medium-Term Oceanic Transport of River-Derived Microplastics in the South China Sea Analyzed with a Particle Tracking Model
AI summary Read the abstract
Researchers used 3D Lagrangian particle tracking simulations to model how microplastics discharged from four major rivers spread through the South China Sea over months. The study showed that particles can travel far from their sources and that the ocean floor receives substantial long-term deposition of river-derived microplastics.
River freshwater effects on the ocean surface dynamics and plastic particles spreading in the Southeast Asian Seas: Insights from a high-resolution simulation using GloFAS
AI summary Read the abstract
Researchers simulated ocean currents in Southeast Asian seas using river flow data, then tracked virtual plastic particles released from Indonesian rivers over nine years. About 56% of particles ended up stranded on regional coasts, while about 43% drifted toward the Indian Ocean, showing river flow patterns affect where floating debris travels.
Numerical Simulation of River-Borne Debris Trajectories and Dispersion Patterns in Lamong Bay, Indonesia
AI summary Read the abstract
Scientists used computer modeling to track how plastic waste moves through Lamong Bay in Indonesia, finding that ocean currents and seasonal wind patterns push floating plastic debris toward river mouths and different parts of the bay depending on the time of year. This matters because that plastic breaks down into microplastics that can enter the food chain through fish and shellfish harvested from these waters, and this kind of pollution-tracking research helps identify where cleanup efforts would have the biggest impact.
Destination of floating plastic debris released from ten major rivers around the Korean Peninsula
AI summary Read the abstract
Researchers used a Lagrangian particle tracking model to simulate the transport and coastal accumulation of plastic debris released from ten major Chinese and Korean rivers around the Korean Peninsula, finding that debris generally strands near the originating river mouth and that model predictions were consistent with observational data.
Beaching patterns of plastic debris along the Indian Ocean rim
AI summary Read the abstract
Researchers used Lagrangian particle-tracking simulations to model the beaching patterns of plastic debris along the Indian Ocean rim, finding that the absence of a subtropical gyre in the Northern Hemisphere Indian Ocean means plastics likely accumulate on coastlines rather than forming a garbage patch. Results showed a large amount of plastic ends up on coastlines in the Northern Indian Ocean while some crosses the equator into the Southern Hemisphere.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.