收藏切换
Parameterization of sediment transport in the Bohai Strait
收藏切换
PDF
Fukang Qi1, Changwei Bian2, Jingping Xu3, 4, *
Haiyang Xuebao | 2020, 42(3) : 83 - 96
Less
收藏切换
Haiyang Xuebao | 2020, 42(3): 83-96
Marine Geology
Parameterization of sediment transport in the Bohai Strait
Full
Fukang Qi1, Changwei Bian2, Jingping Xu3, 4, *
Affiliations
  • 1 Collage of Marine Geosciences, Ocean University of China, Qingdao 266100, China
  • 2 Key Laboratory of Physical Oceanography, Ministry of Education, Ocean University of China, Qingdao 266100, China
  • 3 Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
  • 4 Laboratory for Marine Geology and Environment, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266061, China
Published: 2020-03-25 doi: 10.3969/j.issn.0253-4193.2020.03.008
Outline
收藏切换

The horizontal suspended and bed-load sediment transport in the bottom boundary layer were computed by applying a one-dimensional parameterized scheme to the in-situ data obtained from two stations in the Bohai Strait during a winter field investigation in 2018. In the parameterized scheme, a simplified one-dimensional advection-diffusion equation was used to calculate the vertical suspended sediment concentration in the bottom boundary layer. Aiming at verifying the reliability of the parameterization scheme, two models of bed shear stress calculation, four critical bed-shear stress methods and two advection-diffusion solutions were compared based on the observations. It showed that: (1) bed shear stress calculated by different models are fairly consistent; (2) the critical bed-shear stress is affected by sediment cohesive effects; (3) stratification effect of sediment concentration and the difference of critical bed-shear stress with different particle size fractions need to be considered solving the one-dimensional advection-diffusion equation. Based on the optimal parameterization obtained from the comparisons, sediment transport of the two stations was further calculated: (1) during resuspension events, the ratio of the horizontal suspended sediment flux within 5 meters above bottom accounting for the suspended sediment flux throughout the entire water column which is about 21% in T01 and 17% in T02 is significantly higher than the ratio of the water flux within the same layers; (2) the mean suspended sediment flux estimated by the parameterization scheme in winter is about 16% higher than the result estimated from the conventional method which ignores the vertical variation of suspended sediment concentration in the bottom boundary layer; (3) bed-load transport is generally 2 orders of magnitude smaller than the suspended load transport.

bottom boundary layer  /  suspended sediment flux  /  bed-load transport  /  Bohai Strait
Fukang Qi, Changwei Bian, Jingping Xu. Parameterization of sediment transport in the Bohai Strait[J]. Haiyang Xuebao, 2020 , 42 (3) : 83 -96 . DOI: 10.3969/j.issn.0253-4193.2020.03.008
Year 2020 volume 42 Issue 3
PDF
80
34
Cite this Article
BibTeX
Article Info
doi: 10.3969/j.issn.0253-4193.2020.03.008
  • Receive Date:2018-12-10
  • Online Date:2026-03-26
  • Published:2020-03-25
Article Data
Affiliations
History
  • Received:2018-12-10
  • Revised:2019-02-17
Funding
Affiliations
    1 Collage of Marine Geosciences, Ocean University of China, Qingdao 266100, China
    2 Key Laboratory of Physical Oceanography, Ministry of Education, Ocean University of China, Qingdao 266100, China
    3 Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
    4 Laboratory for Marine Geology and Environment, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266061, China
References
Share
https://castjournals.cast.org.cn/joweb/hyxb/EN/10.3969/j.issn.0253-4193.2020.03.008
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT