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Water and sediment transport mechanisms in a large river‐connected lake
Author(s) -
Wang Hua,
Zhang Zhizhang,
Song Depeng,
Zhou Yiyi,
Liu Xiaodong
Publication year - 2015
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/wej.12121
Subject(s) - hydrology (agriculture) , sediment , sediment transport , environmental science , yangtze river , sedimentary budget , geology , china , geomorphology , geography , geotechnical engineering , archaeology
Abstract Using the finite volume method, a 2‐D water‐sediment coupled model was developed to investigate the transport mechanisms of water and sediment in Poyang Lake, the largest river‐connected lake in China. Simulating water and sediment transport processes in an average water year revealed that the total volume of water and the amount of suspended sediment transported from the five main rivers upstream of Poyang Lake were approximately 1.56 × 10 11 m 3 and 1.25 × 10 7 t, respectively. The outputs of water and sediment from the lake to the downstream Yangtze River were approximately 2.17 × 10 11 m 3 and 1.53 × 10 7 t, respectively. During the wet season, especially between July and September, nearly 1.06 × 10 10 m 3 of water and 1.89 × 10 6 t of suspended sediment were transported upstream from the Yangtze River into the lake due to the high external water levels, which accounted for 4.88% and 12.35%, respectively, of the total annual transport from the lake into the Yangtze River.