Reservoir Regulation Changed Terrestrial Particulate Organic Carbon Transport and Burial Processes off the Yellow River Mouth DOI Creative Commons

Jinya Xu,

Houjie Wang, Xiao Wu

и другие.

Journal of Geophysical Research Oceans, Год журнала: 2024, Номер 129(12)

Опубликована: Дек. 1, 2024

Abstract The dynamic behavior of particulate organic carbon (POC) is crucial for understanding biogeochemical cycling in coastal and oceanic environments. However, intense watershed human activities have significantly altered the POC transport burial estuary‐coast continuum. Here, we developed a novel parameterization scheme that incorporates grain‐size constraints to investigate dispersal accumulation processes off Yellow River mouth during water‐sediment regulation (WSRS) using three‐dimensional hydrodynamic model (FVCOM). result shows successfully captures offshore sorting POC, which leads progressive increase content with dispersion significant variations sediment deposition across different isobaths. Rapid fluctuations river discharge composition WSRS stages noticeable differences sedimentation patterns POC. At Water‐regulation stage, distinct are observed distribution riverine various In contrast, Sediment‐regulation these reduced due finer sediment. Compared sediment‐regulation, plays role enhancing effective Coarse‐grained can form an armored layer protects OC from disturbance. Additionally, increased runoff this stage promotes less energetic environment (>10 m depth). This study provides valuable insights into dynamics high‐turbidity estuarine It underscores importance employing comprehensive modeling approaches elucidate complex processes.

Язык: Английский

Reservoir Regulation Changed Terrestrial Particulate Organic Carbon Transport and Burial Processes off the Yellow River Mouth DOI Creative Commons

Jinya Xu,

Houjie Wang, Xiao Wu

и другие.

Journal of Geophysical Research Oceans, Год журнала: 2024, Номер 129(12)

Опубликована: Дек. 1, 2024

Abstract The dynamic behavior of particulate organic carbon (POC) is crucial for understanding biogeochemical cycling in coastal and oceanic environments. However, intense watershed human activities have significantly altered the POC transport burial estuary‐coast continuum. Here, we developed a novel parameterization scheme that incorporates grain‐size constraints to investigate dispersal accumulation processes off Yellow River mouth during water‐sediment regulation (WSRS) using three‐dimensional hydrodynamic model (FVCOM). result shows successfully captures offshore sorting POC, which leads progressive increase content with dispersion significant variations sediment deposition across different isobaths. Rapid fluctuations river discharge composition WSRS stages noticeable differences sedimentation patterns POC. At Water‐regulation stage, distinct are observed distribution riverine various In contrast, Sediment‐regulation these reduced due finer sediment. Compared sediment‐regulation, plays role enhancing effective Coarse‐grained can form an armored layer protects OC from disturbance. Additionally, increased runoff this stage promotes less energetic environment (>10 m depth). This study provides valuable insights into dynamics high‐turbidity estuarine It underscores importance employing comprehensive modeling approaches elucidate complex processes.

Язык: Английский

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