Hourly change in sediment plume at the Yellow River mouth during the water-sediment regulation

YU Yonggui; SHI Xuefa; CHI Wanqing; HU Zifeng; QIAO Shuqing

doi:10.16562/j.cnki.0256-1492.2018.05.004

2018 Vol. 38, No. 5

Article Contents

Article navigation > Marine Geology & Quaternary Geology > 2018 > 38(5): 41-51

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YU Yonggui, SHI Xuefa, CHI Wanqing, HU Zifeng, QIAO Shuqing. Hourly change in sediment plume at the Yellow River mouth during the water-sediment regulation[J]. Marine Geology & Quaternary Geology, 2018, 38(5): 41-51. doi: 10.16562/j.cnki.0256-1492.2018.05.004

Citation:

YU Yonggui, SHI Xuefa, CHI Wanqing, HU Zifeng, QIAO Shuqing. Hourly change in sediment plume at the Yellow River mouth during the water-sediment regulation[J]. Marine Geology & Quaternary Geology, 2018, 38(5): 41-51. doi: 10.16562/j.cnki.0256-1492.2018.05.004

Hourly change in sediment plume at the Yellow River mouth during the water-sediment regulation

1.
College of Marine Geosciences, Ocean University of China, Qingdao 266003, China
2.
Laboratory of Marine Geology and Geophysics, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
3.
Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
4.
Marine Engineering Environment & Geomatic Center, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
5.
College of Oceanography, Hohai University, Nanjing 210098, China

Received Date: 16 November 2017

Revised Date: 17 April 2018

Publish Date: 28 October 2018

Abstract

Abstract

Since the water sediment regulation (WSR) was put into operation in 2002, most of the Yellow River sediment has been deposited in a confined near-shore zone as a result of hypopycnal plume. On the basis of GOCI satellite images collected in 2011, 2012 and 2013, we analyzed the hourly changes in sediment plume at the Yellow River mouth through the inversion to suspended matter concentrations. Wind fields along with tide data during the satellite-observation period were comprehensively analyzed, and the hydrodynamic regime in the mouth area was numerically modeled to uncover the influence forces of these changes. The results show that the hourly changes in sediment plume can be classified into two types: 1) one-orientation changes—the sediment plume moves gradually towards a definite direction (landwards or seawards); 2) back-and-force movement—the sediment plume shifts landwards or seawards in the first few hours and then moved backwards. In addition, the total suspended mater (TSM) at the Yellow River mouth varies both spatially and temporally, reflecting an intensive interaction between different hydrodynamic processes. For some sites, the hourly changes in TSM may exceed 100 mg/L. One-orientation changes are primarily controlled by tidal currents with a minor influence from river input, whereas back-and-force movements are controlled by the changes of ebb and flood tide. Shear front generated near the river mouth is also believed an important process behind the back-and-force movement of sediment plume.
- water-sediment regulation (WSR) /
- sediment plume /
- hourly changes /
- driving forces

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References

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