Boosting riverine sediment by artificial flood in the Yellow River and the implication for delta restoration

Wu，Xiao1,2,3; Wang，Houjie1,2; Saito，Yoshiki4,5; Syvitski，Jaia6; Bi，Naishuang1,2; Yang，Zuosheng1; Xu，Jingping2,7; Guan，Weibing3

2022-06-01

10.1016/j.margeo.2022.106816

MARINE GEOLOGY   影响因子和分区

0025-3227

1872-6151

Due to accelerated river-derived sediment deficits, global deltas are presently under an increasing risk of being submerged. To address the fundamental need to save Earth's deltas, boosting riverine sediment supply can be considered a reasonable option, but only if the new supply of sediment is prolonged and greater than the opposing forces: sea level rise, delta subsidence and compaction, and ocean energy. In July 2018, an artificial flood with a peak discharge of 3780 m/s was released from the Xiaolangdi Reservoir, the last reservoir located on the mainstream of Yellow River, China. From July 03 to July 29, 412 million tons (Mt) of sediment was discharged out of the dam, including 240 Mt. that was previously sequestered within the reservoir. During this event, 140 Mt. of the escaped sediment directly reached the estuary. A total of 245 Mt. of sediment was deposited along the lower river channel bed, of which 83.6 Mt. was eroded once again and transported to the sea in the subsequent five months. This dam-released pulse, coupled with channel diversion and tidal shear fronts, nourished the deltaic area. New land was built, with the submarine offshore gaining up to 2.6 m in seafloor shoaling. Sediment impounded behind the dam, if properly released, could thus become a potential savior for sediment-starved deltas.

Dam-released flood Delta sustainability Sediment replenishment Yellow River

SCI ; EI

英语

其他

Fundamental Research Funds for the Central Universities[202241007];National Natural Science Foundation of China[42041005];National Natural Science Foundation of China[42176168];National Natural Science Foundation of China[NORC2022-304];State Key Laboratory of Satellite Ocean Environment Dynamics[QNHX2119];Taishan Scholar Project of Shandong Province[TS20190913];

Geology ; Oceanography

Geosciences, Multidisciplinary ; Oceanography

WOS:000803818600004

ELSEVIER

20221912101113

Dams ; Offshore oil well production ; Reservoirs (water) ; Rivers ; Sea level ; Sediments

Dams:441.1 ; Reservoirs:441.2 ; Oceanography, General:471.1 ; Soil Mechanics and Foundations:483 ; Oil Field Production Operations:511.1

GEOSCIENCES

2-s2.0-85129707038

Scopus

1.College of Marine Geosciences,Key Laboratory of Submarine Geosciences and Prospecting Technology,Ocean University of China,Qingdao,238 Songling Road,266100,China
2.Laboratory for Marine Geology,Qingdao National Laboratory for Marine Science and Technology (QNLM),Qingdao,266061,China
3.State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography,Ministry of Natural Resources,Hangzhou,310012,China
4.Estuary Research Center,Shimane University,Matsue,1060, Nishikawatsu-cho, Shimane,690-8504,Japan
5.Geological Survey of Japan,AIST,Tsukuba,30-5-8567,Japan
6.Community Surface Dynamics Modeling System,INSTAAR,University of Colorado,Boulder,80309-0545,United States
7.Department of Ocean Science & Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Wu，Xiao,Wang，Houjie,Saito，Yoshiki,et al. Boosting riverine sediment by artificial flood in the Yellow River and the implication for delta restoration[J]. MARINE GEOLOGY,2022,448.

Wu，Xiao.,Wang，Houjie.,Saito，Yoshiki.,Syvitski，Jaia.,Bi，Naishuang.,...&Guan，Weibing.(2022).Boosting riverine sediment by artificial flood in the Yellow River and the implication for delta restoration.MARINE GEOLOGY,448.

Wu，Xiao,et al."Boosting riverine sediment by artificial flood in the Yellow River and the implication for delta restoration".MARINE GEOLOGY 448(2022).