Carbon Dioxide Fluxes and Their Environmental Control in a Reclaimed Coastal Wetland in the Yangtze Estuary

2015 ◽  
Vol 39 (2) ◽  
pp. 344-362 ◽  
Author(s):  
Qicheng Zhong ◽  
Kaiyun Wang ◽  
Qifang Lai ◽  
Chao Zhang ◽  
Liang Zheng ◽  
...  
2021 ◽  
Vol 296 ◽  
pp. 108212
Author(s):  
Guishu He ◽  
Kaiyun Wang ◽  
Qicheng Zhong ◽  
Guilian Zhang ◽  
Cecil Konijnendijk van den Bosch ◽  
...  

2010 ◽  
Vol 33 (6) ◽  
pp. 1219-1225 ◽  
Author(s):  
Fei-Yan ZHANG ◽  
Jing-Liang TANG ◽  
Dao-Ji LI ◽  
Tao FANG ◽  
Biao WANG

2013 ◽  
Vol 37 (12) ◽  
pp. 1795
Author(s):  
Feng ZHAO ◽  
Tao ZHANG ◽  
Junli HOU ◽  
Jianyi LIU ◽  
Longzhen ZHANG ◽  
...  

Water ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1435
Author(s):  
Peng Hu ◽  
Junyu Tao ◽  
Aofei Ji ◽  
Wei Li ◽  
Zhiguo He

In this paper, a computationally efficient shallow water model is developed for sediment transport in the Yangtze estuary by considering mixed cohesive and non-cohesive sediment transport. It is firstly shown that the model is capable of reproducing tidal-hydrodynamics in the estuarine region. Secondly, it is demonstrated that the observed temporal variation of suspended sediment concentration (SSC) for mixed cohesive and non-cohesive sediments can be well-captured by the model with calibrated parameters (i.e., critical shear stresses for erosion/deposition, erosion coefficient). Numerical comparative studies indicate that: (1) consideration of multiple sediment fraction (both cohesive and non-cohesive sediments) is important for accurate modeling of SSC in the Yangtze Estuary; (2) the critical shear stress and the erosion coefficient is shown to be site-dependent, for which intensive calibration may be required; and (3) the Deepwater Navigation Channel (DNC) project may lead to enhanced current velocity and thus reduced sediment deposition in the North Passage of the Yangtze Estuary. Finally, the implementation of the hybrid local time step/global maximum time step (LTS/GMaTS) (using LTS to update the hydro-sediment module but using GMaTS to update the morphodynamic module) can lead to a reduction of as high as 90% in the computational cost for the Yangtze Estuary. This advantage, along with its well-demonstrated quantitative accuracy, indicates that the present model should find wide applications in estuarine regions.


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