IOCAS-IR  > 海洋环流与波动重点实验室
Impact of Sea Ice on the Hydrodynamics and Suspended Sediment Concentration in the Coastal Waters of Qinhuangdao, China
Jiang, Man1,2; Pang, Chongguang1,3,4; Liu, Zhiliang5; Jiang, Jingbo1,3,4
2020-02-01
Source PublicationWATER
Volume12Issue:2Pages:18
Corresponding AuthorPang, Chongguang(chgpang@qdio.ac.cn)
AbstractThe influence of sea ice on the hydrodynamics, sediment resuspension, and suspended sediment concentration (SSC) in the coastal area of Qinhuangdao was systematically investigated using 45-day in situ measurements at two stations (with ice at station M1 and without ice at station M2) in the Bohai Sea in the winter of 2018. It was found that the daily fluctuations of temperature and salinity at M1 are more significant than those at M2. During a typical seawater icing event on January 28, the temperature and salinity of the bottom water at M1 were decreased by 1.77 degrees C and increased by 0.4 psu, respectively. Moreover, due to the shielding effect of the sea ice, the residual current was much less affected by the wind at M1 than at M2. For the vertical distribution of current velocity, it changed from a traditional logarithmic type under ice-free conditions to parabolic type under ice-covered conditions due to the larger drag coefficient of the water body on the solid ice surface. For the SSC and turbidity at the bottom layer, the average values were 4.9 mu L/L and 8.6 NTU at M1, respectively, approximately half of those at M2. The smaller SSC and turbidity at M1 can be attributed to the lower near-bottom turbulent kinetic energy (TKE). At M2, however, the larger SSC is closely related to the strong wind forcing, which could induce higher TKE without sea ice cover, and hence stronger turbulent resuspension. The seabed sediment analysis results showed that in the study area, fine sand is most likely to resuspend, while cohesive particles would resuspend only under strong hydrodynamic conditions.
Keywordsea ice impact in situ observation coastal waters hydrodynamics suspended sediment concentration resuspension turbulent kinetic energy parabolic grain size
DOI10.3390/w12020611
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41576060] ; Natural Science Foundation of China[U1406401] ; Natural Science Foundation of Shandong Province[U1406401] ; National Key R&D Program of China[2016YFC0301203] ; Research Foundation for Advanced Talent[2019YB020] ; Hebei Science and Technology Project[19273301D]
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000519846500302
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/167003
Collection海洋环流与波动重点实验室
Corresponding AuthorPang, Chongguang
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Sch Earth Sci, Beijing 100049, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao 266237, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
5.Hebei Normal Univ Sci & Technol, Inst Marine Sci & Technol, Qinhuangdao 066600, Hebei, Peoples R China
First Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Jiang, Man,Pang, Chongguang,Liu, Zhiliang,et al. Impact of Sea Ice on the Hydrodynamics and Suspended Sediment Concentration in the Coastal Waters of Qinhuangdao, China[J]. WATER,2020,12(2):18.
APA Jiang, Man,Pang, Chongguang,Liu, Zhiliang,&Jiang, Jingbo.(2020).Impact of Sea Ice on the Hydrodynamics and Suspended Sediment Concentration in the Coastal Waters of Qinhuangdao, China.WATER,12(2),18.
MLA Jiang, Man,et al."Impact of Sea Ice on the Hydrodynamics and Suspended Sediment Concentration in the Coastal Waters of Qinhuangdao, China".WATER 12.2(2020):18.
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