Since 2002, an artificial water and sediment regulation(AWSR) has been carried out, which largely reduced water and sediment discharged from the Yellow River into the Bohai Sea. Although the sediment transport in the ...Since 2002, an artificial water and sediment regulation(AWSR) has been carried out, which largely reduced water and sediment discharged from the Yellow River into the Bohai Sea. Although the sediment transport in the Yellow River Mouth(YRM) has been observed and modeled intensively since AWSR, but preferentially for the non-storm conditions. In this study, a three-dimensional current-wave-sediment coupled model, DHI-MIKE numerical model, was used to examine the seasonal suspended-sediment transport in the YRM after the AWSR. Results show that the seasonal distribution of suspended-sediments in the YRM is dominated by wind and wave rather than river input. The major transport pathway of suspended-sediments is from the western Laizhou Bay to the Bohai Strait during the winter monsoon, especially in storm events. In addition, about 66% of the river sediments deposit within 30 km of the YRM, which is smaller than previous estimations. It suggests that the YRM has been eroded in recent decades.展开更多
Water vapor transport is decomposed into mean transport and eddy transport. Analysis of watervapor over South China during the first flood season of 1994 shows that difference between season mean transport and season ...Water vapor transport is decomposed into mean transport and eddy transport. Analysis of watervapor over South China during the first flood season of 1994 shows that difference between season mean transport and season total transpoFt is less than 10%. For the monthly and ten-day averages, the difference is above it.The transient transport of water vapor is the least among all kinds of eddy transport. its amount is only 2% oftotal transpoft for column. The constant wave transport is the Iapest Sometimes it may be 1-6 times of totaltranspoFt.展开更多
基金supported by the National Natural Science Foundation of China (Nos. 41476030, U1706215, and 41406081)the Project of Taishan Scholar
文摘Since 2002, an artificial water and sediment regulation(AWSR) has been carried out, which largely reduced water and sediment discharged from the Yellow River into the Bohai Sea. Although the sediment transport in the Yellow River Mouth(YRM) has been observed and modeled intensively since AWSR, but preferentially for the non-storm conditions. In this study, a three-dimensional current-wave-sediment coupled model, DHI-MIKE numerical model, was used to examine the seasonal suspended-sediment transport in the YRM after the AWSR. Results show that the seasonal distribution of suspended-sediments in the YRM is dominated by wind and wave rather than river input. The major transport pathway of suspended-sediments is from the western Laizhou Bay to the Bohai Strait during the winter monsoon, especially in storm events. In addition, about 66% of the river sediments deposit within 30 km of the YRM, which is smaller than previous estimations. It suggests that the YRM has been eroded in recent decades.
文摘Water vapor transport is decomposed into mean transport and eddy transport. Analysis of watervapor over South China during the first flood season of 1994 shows that difference between season mean transport and season total transpoFt is less than 10%. For the monthly and ten-day averages, the difference is above it.The transient transport of water vapor is the least among all kinds of eddy transport. its amount is only 2% oftotal transpoft for column. The constant wave transport is the Iapest Sometimes it may be 1-6 times of totaltranspoFt.
