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Papers
61,005 resultsShowing papers similar to Comprehensive Effects of Temperature, Salinity,and Current Velocity on the MicroplasticAbundance in Offshore Area
ClearDynamic distribution of microplastics in mangrove sediments in Beibu Gulf, South China: Implications of tidal current velocity and tidal range
Researchers examined how tidal current velocity and tidal range influence the distribution of microplastics in mangrove sediments in Beibu Gulf, South China, finding strong linear relationships between current velocity and microplastic content during both flood and ebb tides. Microplastic concentrations increased from the seaward to landward boundary, with tidal current velocity -- but not tidal range -- significantly predicting their accumulation rates.
Testing the factors controlling the numbers of microplastics on beaches along the western Gulf of Thailand
Researchers measured microplastic concentrations on beaches along the western Gulf of Thailand and applied statistical models to link abundance patterns to ocean surface currents and land-based pollution sources, finding that current direction and proximity to riverine inputs were the strongest predictors of beach MP levels.
Can microplastics in offshore waters reflect plastic emissions from coastal regions?
Researchers found a significant negative correlation between coastal plastic discharge amounts and offshore microplastic abundance in Chinese waters, indicating that hydrodynamic conditions rather than proximity to pollution sources primarily determine microplastic distribution.
Analysing the influence of hydrodynamic and sedimentary factors on the microplastic distribution in the Ashtamudi estuary, India
Microplastic abundance in the Ashtamudi estuary in India ranged from 3.2 to 53 items/L, with highest concentrations near river-sea confluences; the study found microplastic distribution inversely correlated with current velocity and directly with suspended sediment concentration, enabling a predictive non-linear transport model.
Modeling the fate of microplastics in the Sengkarang Estuary, Pekalongan City, Central Java, Indonesia
Researchers measured microplastic concentrations in water and sediment at the mouth of the Sengkarang River in Indonesia and built a hydrodynamic model to track how tidal currents, wind, and river flow distribute the particles. Microplastics were highest in coastal waters and mangrove sediments, with tides and currents driving horizontal transport and concentrating particles in biologically sensitive habitats. The modeling approach offers a practical framework for predicting where microplastics accumulate and informing pollution management in river-to-sea systems.
Tidal intensity and suspended sediment concentration drive microplastic distribution in the Pearl River Estuary: Insights from remote sensing retrieval
Field measurements showed that tidal intensity and suspended sediment concentrations are key drivers of microplastic transport in coastal and estuarine waters. The results help explain why microplastic concentrations fluctuate with tidal cycles and inform models predicting where plastics accumulate in dynamic coastal zones.
Microplastic Distribution in a Small-Scale Aquatic System with Limited Anthropogenic Influence: A Case Study in Sasebo City, Japan
Researchers conducted the first investigation of microplastic distribution in Sasebo City, Japan, using principal component analysis alongside water flow velocity and salinity data, finding a mean abundance of 82.4 items/m3 and characterizing spatial distribution patterns in this relatively low-anthropogenic-influence aquatic system.
Impacts of wind forcing on microplastics kinematic in a sensitive water area
Researchers modeled how wind forcing affects the movement and distribution of microplastics in a sensitive coastal water area, finding that wind-driven surface currents are a dominant control on where microplastics accumulate. The model predicts substantial wind-driven concentration at specific coastal zones.
Global mapping for the occurrence of all-sized microplastics in seafloor sediments
Researchers compiled and analyzed sampling data from 2,024 global seafloor sediment sites and developed Python-based tools to extract submarine current state data corresponding to each sampling location, enabling investigation of hydrodynamic drivers of microplastic distribution in seafloor sediments.
The Salinity Difference and Clay Mineral Types Affect the Distribution of Microplastics in the Seabed: New Evidence from the Western North Yellow Sea
Researchers examined how bottom seawater salinity gradients and clay mineral types influence microplastic distribution in surface sediments of the western North Yellow Sea, a semi-enclosed continental shelf area with complex current conditions. The study provides field-scale evidence that salinity differences and clay mineralogy jointly control MP settlement and distribution patterns beyond the laboratory conditions in which these effects were previously demonstrated.
Factors influencing the occurrence and distribution of microplastics in coastal sediments: From source to sink
Researchers sampled microplastics from sediments of two semi-enclosed bays and two coastal open zones in China, finding that proximity to human activity and reduced hydrodynamic energy were the primary drivers of higher microplastic abundance, with Jinghai Bay showing the greatest contamination due to its enclosed geometry and adjacent urban inputs.
Microplastic occurrence and hydrodynamic-sedimentary driving effects in the Bohai Strait region of China
This study investigated microplastic occurrence and distribution in the Bohai Sea, examining how hydrodynamic and sedimentary processes drive the spatial pattern of microplastic accumulation. Current dynamics and sedimentation rates emerged as key controls on where microplastics concentrate.
Hydro-sedimentary conditions shape the microplastic occurrence in sediments of the Pearl River Estuary (China)
A field study of the Pearl River Estuary in southern China found microplastic concentrations in sediments ranging from 4 to 220 particles/kg, with higher abundance in nearshore zones, and identified hydrodynamic conditions and proximity to urban areas as the main drivers of spatial variation.
Effect of Salinity and Temperature on the Dispersion of Spilled Oil in the Presence of Microplastics
Researchers investigated how salinity and temperature affect the dispersion of spilled oil in seawater when microplastics are present, finding that these environmental variables alter oil droplet behavior and distribution. The results suggest that microplastics complicate oil spill dynamics in ways that vary with ocean conditions.
Microplastic Abundance in Sediment in Pangandaran Waters, West Java, Indonesia
Researchers measured microplastic abundance in sediments at multiple stations in Pangandaran waters, West Java, Indonesia, finding the highest counts at station 2 (12,622 particles, mostly fibers and fragments) and the lowest at station 4 (1,809 particles). The study identifies oceanographic factors — currents, waves, and tides — as key drivers of microplastic movement and accumulation patterns in coastal Indonesian waters.
Global mapping for the occurrence of all-sized microplastics in seafloor sediments
Researchers developed code for extracting ocean surface current and near-bed thermohaline current data to analyze the hydrodynamic driving forces behind global microplastic distribution patterns in seafloor sediments.
Microplastic Distribution and Influence Factor Analysis of Seawater and Surface Sediments in a Typical Bay With Diverse Functional Areas: A Case Study in Xincun Lagoon, China
Researchers assessed microplastic distribution in Xincun Lagoon in China, finding that different human activities such as tourism, fishing, and aquaculture directly influenced the type and level of microplastic pollution in seawater and sediments.
Vertical Stratificationand Driving Factors of Microplasticsin the South China Sea: Distributions, Mechanisms, and EcologicalRisks
This study of the South China Sea found that microplastic abundance decreases significantly with water depth, with lighter polymers concentrated near the surface and denser polymers found deeper. Temperature, salinity, and ocean stratification were identified as key drivers of this vertical distribution pattern.
Microplastics Patch Based on HydrodynamicModeling in The North Indramayu, Java Sea
Hydrodynamic modeling was used to track microplastic transport in the Java Sea off North Indramayu, Indonesia, predicting accumulation zones influenced by tidal currents and seasonal winds. The study provides a modeling framework for understanding microplastic distribution in Indonesian coastal waters, which receive high plastic inputs from land.
Aggregation behavior of polyethylene microplastics in the nearshore environment: The role of particle size, environmental condition and turbulent flow
Researchers investigated how particle size, salinity, dissolved organic matter, and turbulent flow affect the aggregation behavior of polyethylene microplastics in nearshore water, finding that all factors influenced aggregation rates and aggregate structure. Understanding microplastic aggregation in estuarine environments is essential for predicting their sedimentation and biological uptake.
Ocean current modulation of the spatial distribution of microplastics in the surface sediments of the Beibu Gulf, China
Researchers conducted a large-scale survey of microplastics in seafloor sediments of the Beibu Gulf in China and found that ocean currents play a major role in where microplastics accumulate. The study provides important data on how water circulation patterns transport and concentrate microplastic pollution in coastal marine environments.
Influence of estuarine physical processes in the transport of microplastics: a modelling study in the Gironde estuary
Researchers developed a hydrodynamic model to investigate how estuarine physical processes in the Gironde estuary influence the transport and distribution of microplastics, examining the role of tidal currents, salinity gradients, and fluvial discharge on particle fate. The modelling study provides insight into the mechanisms controlling microplastic accumulation and export in estuarine environments.
Analisis Mikroplastik pada Sedimen di Pesisir Selat Sempu, Kabupaten Malang, Jawa Timur
This Indonesian study analyzed the abundance and characteristics of microplastics in coastal sediments of the Sempu Strait in Malang Regency, Java. The research found microplastics at all sampling sites and used ocean current and tidal data to understand how local conditions influence microplastic distribution in this coastal zone.
Zonal Distribution Characteristics of Microplastics in the Southern Indian Ocean and the Influence of Ocean Current
Microplastic concentrations were measured in seawater across the southern Indian Ocean along transects influenced by major ocean currents, finding that plastic distribution was shaped by circulation patterns with higher concentrations in convergence zones. The study provides baseline data on microplastic pollution in a relatively understudied and remote ocean region.