RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2016, Vol. 25 >> Issue (10): 1520-1527.doi: 10.11870/cjlyzyyhj20161006

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ANALYSIS OF TEMPORAL AND SPATIAL DISTRIBUTION CHARACTERISTICS OF BEDLOAD IN SOUTH CHANNEL AND NORTH PASSAGE, YANGTZE ESTUARY

ZHANG Jun-yong1,2, ZHAO De-zhao1   

  1. 1. Key Lab of communications on Estuarine and Coastal Science, Shanghai 201201, China;
    2. Yangtze Estuary Waterway Administration Bureau, Shanghai 200003, China
  • Received:2015-12-07 Revised:2016-07-04 Online:2016-10-20
  • Supported by:
    National Natural Science Funds (51209135)

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Abstract: Based on previous studies and field data from long-term, continuous and broad-scale sampling of riverbed sediments, in the paper we analyzed the spatial and temporal distribution characteristics of bed load in South Channel and North Passage, Yangtze Estuary. Discussion from the perspective of riverbed source on the deposition material in the Yangtze Estuary deep water channel was carried out as well. Results showed that the temporal and spatial distribution of the bedload materials in the Yangtze Estuary was uneven as well; Riverbed changed with flooding season, wind blowing sand, bedload sand transit and so on; The seasonal variation of riverbed in South Channel was greater than that in the North Passage. The Yangtze estuary deep water channel deposition material partial was much thicker than suspend load and much closer to surrounding riverbed material, the channel deposition should pay attention to the exchange between beach and deep water channel trough high sediment flow at the bottom.

Key words: bedload, Yangtze Estuary, temporal and spatial distribution, deepwater channel

CLC Number: 

  • TV147
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