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61,005 resultsShowing papers similar to Seasonal variability of microplastic transport modulated by tides: A mass-based assessment in a turbidity maximum zone
ClearVertical distribution and river-sea transport of microplastics with tidal fluctuation in a subtropical estuary, China
Researchers investigated how tidal fluctuation affects the vertical distribution and river-sea transport of microplastics in a subtropical estuary in China, finding that tidal dynamics significantly influence microplastic size, concentration, and movement between river and marine environments.
Dynamics of microplastic abundance under tidal fluctuation in Musi estuary, Indonesia
This first study of microplastic dynamics under tidal influence in the Musi River Estuary, Indonesia, found that particle abundance fluctuated with flood and ebb tides, with tidal forcing shaping microplastic transport across estuarine zones.
How does the tidal cycle influence the estuarine dynamics of microplastics?
Researchers investigated how tidal cycles influence the abundance and characteristics of microplastics in an urban estuary, finding that tidal dynamics significantly affect MP transport dynamics and that estuaries serve as a major conduit for MP transfer from rivers to the ocean.
Dynamic characteristics of microplastics under tidal influence and potential indirect monitoring methods
Researchers investigated microplastic dynamics in tidal river channels and found that abundance fluctuated significantly with tidal cycles, increasing during flood tides and decreasing during ebb tides, with a strong linear relationship between microplastic levels and water flow rates.
How does the tidal cycle influence the estuarine dynamics of microplastics?
Researchers tracked how tidal cycles influence the movement and distribution of microplastics within estuaries, finding that tidal dynamics play a major role in concentrating or dispersing particles across intertidal zones. The study provides a framework for understanding microplastic transport in tidal environments.
Horizontal variation of microplastics with tidal fluctuation in the Chao Phraya River Estuary, Thailand
Microplastic concentrations and composition in the Chao Phraya River Estuary in Thailand varied with tidal cycle, with flood tides increasing marine-sourced particles and ebb tides flushing river-derived fragments, showing that tidal dynamics must be accounted for in estuarine microplastic sampling designs.
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.
Tide-induced infiltration and resuspension of microplastics in shorelines: Insights from tidal tank experiments
Researchers investigated how tidal forces drive microplastic infiltration and resuspension in shoreline sediments using tidal tank experiments, finding that smaller, lower-density particles were more readily resuspended and that tidal cycles progressively redistributed microplastics.
Transport mechanisms and fate of microplastics in estuarine compartments: A review
This review analyzes how tides, river flow, density, biofouling, and sediment dynamics influence the transport and fate of microplastics in estuaries, identifying these transitional zones as both temporary sinks and conduits for plastic pollution.
Dynamic signatures of microplastic distribution across the water column of Yangtze River Estuary: Complicated implication of tidal effects
Seasonal sampling of microplastic concentrations throughout the Yangtze River Estuary water column found tidal dynamics strongly influenced distribution, with researchers developing a model estimating 2154 tons per year of microplastic flux into the East China Sea and a tide impact factor index of 38-58%.
Size-dependent microplastics transport in a sediment rich environment
Researchers developed a two-dimensional depth-averaged numerical model to simulate size-dependent microplastic transport in sediment-rich estuarine environments, incorporating cohesive and non-cohesive sediment classes to capture how tidal deposition and resuspension cycles govern microplastic fate.
Effect of tidal current on the settling and accumulation of microplastics in the Chao Phraya River estuary, Thailand
Researchers investigated the effect of tidal currents on the settling and accumulation of microplastics in the Chao Phraya River estuary during a mixed spring tidal cycle, deploying sediment traps at 3 meters depth during flood and ebb tides. The study found that tidal dynamics significantly influence where and how microplastics are deposited in estuarine sediments.
Mobilization and deposition of plastic along an estuarine bank during tidal cycles
An experimental study in a French macrotidal estuary tracked plastic debris (macro, meso, and microplastics ≥3 mm) across six tidal cycles, finding that tidal mobilization and deposition patterns on estuarine banks are highly dynamic and dependent on plastic composition, shape, and tidal stage.
Hydrology Modulates the Microplastics Composition and Transport Flux Across the River–Sea Interface in Zhanjiang Bay, China
Researchers measured how tides and seasonal rainfall affect the movement of microplastics through an estuary in southern China. They found that microplastic levels rose during low tides and dropped during high tides, with an estimated 1.6 billion particles flowing from river to sea each year. The findings provide a framework for understanding how water flow patterns drive microplastic transport into coastal environments.
Fluctuations in the Microplastic Vertical Distribution Due to Tide in the Tidal Reach of the Oita River
Researchers monitored microplastic vertical distribution through a full tidal cycle in the tidal reach of the Oita River, Japan, finding that concentrations were highest in bottom layers regardless of tidal phase, with accumulation at a saltwater intrusion layer, and that rising tide conditions produced the highest vertically-averaged concentrations.
Microplastics in a salt-wedge estuary: Vertical structure and tidal dynamics
Researchers conducted the first study of microplastic distribution in the vertically structured Adour Estuary in France, finding that tidal dynamics and the salt-wedge interface significantly influence microplastic abundance and vertical stratification, with distinct concentration patterns across tidal cycles.
Role of biophysical flocculation on microplastics and sediment interactions in a microtidal estuary
Field surveys and lab experiments in a microtidal estuary found that microplastics flocculate with negatively charged clastic sediment through biophysical processes, influencing how microplastics are transported, aggregated, and deposited in estuarine environments.
Suspended microplastics during a tidal cycle in sea-surface waters around Chao Phraya River mouth, Thailand
Researchers sampled microplastics from surface waters around the Chao Phraya River mouth in Thailand during low and high tides. Microplastic concentrations were significantly lower during spring tide than neap tide, suggesting that tidal dynamics play an important role in how plastic particles are distributed and diluted in coastal waters.
Revealing the migration behaviors of microplastics in the intertidal environments
This study investigated the migration behavior of microplastics in intertidal environments, examining how tidal dynamics, sediment characteristics, and particle properties govern whether microplastics accumulate, are buried, or are remobilized in coastal zones.
Physical processes matters! Recommendations for sampling microplastics in estuarine waters based on hydrodynamics
This methodological review discusses how estuarine hydrodynamics create challenges for representative microplastic sampling, recommending standardized protocols that account for tidal cycles, salinity gradients, and seasonal variability to ensure comparability of data across different estuary systems.
Do tidal fluctuations affect microplastics distribution and composition in coastal waters?
This study investigated whether tidal fluctuations affect the distribution and composition of microplastics in megatidal coastal waters. Researchers collected water samples across complete tidal cycles during spring and neap tides, providing insights into how natural hydrodynamic processes influence microplastic transport and concentration patterns.
Abundance and variation of microplastics between seasons in a tropical estuary: The case of Can Gio estuary, Vietnam
Researchers assessed seasonal variation in microplastic abundance and characteristics in the Can Gio estuary, Vietnam, across wet and dry seasons. Microplastic concentrations were higher during the wet season, with seasonal plastic transport linked to river discharge and rainfall-driven inputs from upstream urban sources.
Pollution Load and Transport Dynamics Govern Microplastic Export from Subtropical Estuaries
Researchers used pyrolysis-GC/MS and settling velocity experiments to characterize microplastic concentrations and transport dynamics across Gulf of America estuaries, finding that Galveston Bay had the highest polymer loads and that estuaries act as semipermeable filters — intermittently trapping and tide-modulated exporting microplastics to coastal waters — with polymer properties and hydrodynamic forcing jointly governing retention and export.
Spatial and temporal distribution of microplastics in the Belawan Estuary, Indonesia
Researchers tracked microplastic levels across different tidal cycles and lunar phases in an Indonesian estuary, finding that concentrations peaked near the coastline during high tide and full moon periods. The study shows that tidal currents and seasonal water flow patterns strongly control where microplastics accumulate, which is important for designing cleanup strategies.