Upwelling and sedimentation dynamics

Qu Tangdong; Hu Dunxin

doi:10.1007/BF02850633

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Upwelling and sedimentation dynamics

OriginalPaper | Updated：2023-05-16

- Upwelling and sedimentation dynamics
- Upwelling and sedimentation dynamics
- 海洋湖沼学报（英文） 1993年11卷第4期页码：289-295
- Affiliations：
  
  Institute of Oceanology
- Author bio：
- Funds：
  
  Contribution No. 2149 from the Institute of Oceanology. Academia Sinica.
- DOI：10.1007/BF02850633
  中图分类号：
- 纸质出版：1993
- Accepted：
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Upwelling and sedimentation dynamics[J]. 海洋湖沼学报（英文）, 1993,11(4):289-295.

Tangdong, Q., Dunxin, H. Upwelling and sedimentation dynamics., Chin. J. Ocean. Limnol. 11, 289–295 (1993). https://doi.org/10.1007/BF02850633
Upwelling and sedimentation dynamics[J]. 海洋湖沼学报（英文）, 1993,11(4):289-295. DOI： 10.1007/BF02850633.

Tangdong, Q., Dunxin, H. Upwelling and sedimentation dynamics., Chin. J. Ocean. Limnol. 11, 289–295 (1993). https://doi.org/10.1007/BF02850633 DOI：

摘要

Abstract

It was found that the location and distributional pattern of certain sea bottom mud patches in the Yellow Sea and East China Sea are identical with the geographical location and flow pattern of the upwelling above. Following a general description by Hu (1984) of the role of upwelling in sedimentation

this study presents a two—dimensional numerical model to further examine the sedimentation dynamics in upwelling areas. The model shows that advection by ocean circulation

downward settling due to gravity and turbulent mixing are the main mechanisms controlling the movement of suspended matters

and that the upwelling on the shelf favors deposition near the bottom. It is concluded that on the shelf (1) wherever there is upwelling

mud sediment must exist; and (2) the closer to the center of upwelling

the greater the concentration of suspended matters in the water

the greater the depositing rate near the bottom and the finer the sediment on the sea bed.

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Keywords

references

Hu Dunxin, 1984. Upwelling and sedimentation dynamics, I: The role of upwelling in sedimentation in the Yellow Sea and East China Sea—a description of general features.Chin. J. Oceanol. Limol. 2(1): 12–19.

Hu Duxin, 1987. Marine rain: reexamination of the role of upwelling in sedimentation.In: Proceedings of the 16th Pacific Science Congress, Seoul.

Murray, S. P., 1970. Settling velocities and vertical diffusion of particles in turbulent water.J. Geophys. Res. 75: 1647–1654.

Qian Ning, 1983. Kinematics of Sediment. Science Press, Beijing, 656 pp. (in Chinese)

Qin Yunshan and Li Fan, 1982. Study on the suspended matter of the sea water in the Bohai Gulf.Acta Oceanologica Sinica 4: 191–199.

Qin Yunshan and Li Fan, 1986. Study of the influence of sediment loads discharged from yellow River on sedimentation in the Bohai and Yellow Seas.Studia marina Sinica 27: 125–135. (in Chinese)

Qin Yunshan, Li Fan, Zheng Tiemin et al., 1986. A study on total suspended matter in winter in the southern Yellow Sea.Marine Sciences 10: 1–7. (in Chinese)

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Summerhayes, C. P., Melo, V. and Barretto, H. T., 1976. The influence of upwelling on suspended matter and shelf sediments off southeastern Brazil.J. of Sedimentary Petrology 46: 819–828.

Shanks, A. L. and Trent, J. D., 1979. Marine snow: microscale nutrient patches.Limnol. Oceanogr. 24: 850–854.

Shanks, A. L. and Trent, J. D., 1980. Marine snow, sinking rates and potential role in vertical flux.Deep Sea Res. 27A: 137–143.

Wuhan Hydraulic and Electric College, 1981. Sedimentation Engineering in River. Hydraulic Press, Beijing, 372 pp. (in Chinese)

Yuan Yeli, 1979. A preliminary study of the circulation related to the cold-mass in the Yellow Sea.Oceanol. Limnol. Sinica 10: 187–199. (in Chinese)

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