Research on phosphorus release from resuspended sediment under wind-induced waves in shallow water [浅水风生波作用下再悬浮沉积物中磷释放的研究]

作者：Cheng P.; Zhu X.; An Y.; Feng C.^*

来源：Acta Mechanica Sinica, 2022, 38(3): 321399.

DOI：10.1007/s10409-021-09023-z

• Desorption
• Phosphorus
• Sediment resuspension
• Sediment-water interface
• Wind-induced waves

Sediment-water interfaces are important interfaces for lakes, which are related to most environmental and ecological problems. Wind-induced waves cause secondary pollution via sediment resuspension. Since the coupling mechanism of water, resuspended sediments, and phosphorus affects the release of phosphorus (P) near the interface, a coupled model was explored for two sediment types with different adsorption-desorption capabilities to examine sediment resuspension and P release. The relationships among wind speed, wave characteristics, sediment distribution and P concentration were obtained. For different sediments, the unit sediment desorption release is negatively correlated with wind speed. When sediments are resuspended under low or moderate wind speed, the P concentration in the overlying water increases abruptly, hampering diffusion. P release exhibits the characteristics of concentrated release in a small region and changes the water environment rapidly. ? 2022, The Chinese Society of Theoretical and Applied Mechanics and Springer-Verlag GmbH Germany, part of Springer Nature.

• 单位
  中国科学院大学