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Control of Restrictive Topography in the Bohai Strait on Modern Sedimentary System Distribution.

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Title: Control of Restrictive Topography in the Bohai Strait on Modern Sedimentary System Distribution. (English)
Authors: HUANG, YuTing, SHAN, Xin, SHI, XueFa, QIAO, ShuQing, XU, XiaoMei, PAN, HaiDong, LAN Tao, GAO, JianHua
Source: Acta Sedimentologica Sinica; Jun2026, Vol. 44 Issue 3, p961-976, 16p
Subject Terms: Topography, Hydrodynamics, Grain size, Sedimentary structures, Tidal currents, Coastal sediments, Sediment sampling
Geographic Terms: Bo Hai (China), Yellow River (China), Shandong Peninsula (China), Shandong Sheng (China)
Abstract: [Objective] The formation of sedimentary systems within straits is intricately linked to the unique topographical constraints that influence both facies characteristics and sediment distribution patterns. Although current research mainly focuses on narrow straits (less than 50 km wide), where sedimentation is dominated by tidal processes, wider straits introduce more complex hydrodynamic dynamics, leaving many aspects of the sedimentation processes yet to be fully understood. [Methods] This study focuses on the Bohai Strait (a shallow strait with a width of 106 km) and is based on an extensive dataset of surface sediment grain sizes, combined with four shallow seismic profiles, to characterize the sedimentary environment within the Bohai Strait. Additionally, a regional ocean modeling system (ROMS) simulation was employed for winter (December 2020-February 2021) to better understand the hydrodynamic processes influencing sediment dynamics and control over sediment distribution within and surrounding the Bohai Strait. [Results] Our results reveal significant differences in sediment dynamics between the northern and southern parts of the strait. The northern region exhibits a high-energy environment dominated by erosion, whereas the southern region displays a lower-energy environment conducive to deposition. Surface sediment types vary spatially, with coarser grains predominating in the north and narrow regions, with finer grains observed on both sides (east-west) and in the south. A large-scale, sandy flood-tidal delta appears around the Laotieshan Channel in the north. The asymmetric tidal currents flowing in and out of the channel are likely responsible for this feature, and ebb-tidal delta is not prominent. In contrast, the southern part of the strait exhibits two distinct sedimentary systems : (1) Shandong mud wedge: This system lies along the coast of the Shandong Peninsula, shaped by the substantial sediment supply from the Yellow River and the influence of coastal currents. (2) Scour troughs and sandy tidal deltas: These smaller features are attributed to the protective effect of islands present in the southern strait, combined with the abundant supply of fine-grained sediments. [Conclusions] This study highlights the critical role of the complex topography of the strait in the confinement in shaping regional sediment transport dynamics and the resulting distribution of sedimentary systems. [ABSTRACT FROM AUTHOR]
Copyright of Acta Sedimentologica Sinica is the property of Acta Sedimentologica Sinica Editorial Office and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Control of Restrictive Topography in the Bohai Strait on Modern Sedimentary System Distribution. (English)
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  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22HUANG%2C+YuTing%22">HUANG, YuTing</searchLink><br /><searchLink fieldCode="AR" term="%22SHAN%2C+Xin%22">SHAN, Xin</searchLink><br /><searchLink fieldCode="AR" term="%22SHI%2C+XueFa%22">SHI, XueFa</searchLink><br /><searchLink fieldCode="AR" term="%22QIAO%2C+ShuQing%22">QIAO, ShuQing</searchLink><br /><searchLink fieldCode="AR" term="%22XU%2C+XiaoMei%22">XU, XiaoMei</searchLink><br /><searchLink fieldCode="AR" term="%22PAN%2C+HaiDong%22">PAN, HaiDong</searchLink><br /><searchLink fieldCode="AR" term="%22LAN+Tao%22">LAN Tao</searchLink><br /><searchLink fieldCode="AR" term="%22GAO%2C+JianHua%22">GAO, JianHua</searchLink>
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  Data: Acta Sedimentologica Sinica; Jun2026, Vol. 44 Issue 3, p961-976, 16p
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Topography%22">Topography</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrodynamics%22">Hydrodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Grain+size%22">Grain size</searchLink><br /><searchLink fieldCode="DE" term="%22Sedimentary+structures%22">Sedimentary structures</searchLink><br /><searchLink fieldCode="DE" term="%22Tidal+currents%22">Tidal currents</searchLink><br /><searchLink fieldCode="DE" term="%22Coastal+sediments%22">Coastal sediments</searchLink><br /><searchLink fieldCode="DE" term="%22Sediment+sampling%22">Sediment sampling</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Bo+Hai+%28China%29%22">Bo Hai (China)</searchLink><br /><searchLink fieldCode="DE" term="%22Yellow+River+%28China%29%22">Yellow River (China)</searchLink><br /><searchLink fieldCode="DE" term="%22Shandong+Peninsula+%28China%29%22">Shandong Peninsula (China)</searchLink><br /><searchLink fieldCode="DE" term="%22Shandong+Sheng+%28China%29%22">Shandong Sheng (China)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: [Objective] The formation of sedimentary systems within straits is intricately linked to the unique topographical constraints that influence both facies characteristics and sediment distribution patterns. Although current research mainly focuses on narrow straits (less than 50 km wide), where sedimentation is dominated by tidal processes, wider straits introduce more complex hydrodynamic dynamics, leaving many aspects of the sedimentation processes yet to be fully understood. [Methods] This study focuses on the Bohai Strait (a shallow strait with a width of 106 km) and is based on an extensive dataset of surface sediment grain sizes, combined with four shallow seismic profiles, to characterize the sedimentary environment within the Bohai Strait. Additionally, a regional ocean modeling system (ROMS) simulation was employed for winter (December 2020-February 2021) to better understand the hydrodynamic processes influencing sediment dynamics and control over sediment distribution within and surrounding the Bohai Strait. [Results] Our results reveal significant differences in sediment dynamics between the northern and southern parts of the strait. The northern region exhibits a high-energy environment dominated by erosion, whereas the southern region displays a lower-energy environment conducive to deposition. Surface sediment types vary spatially, with coarser grains predominating in the north and narrow regions, with finer grains observed on both sides (east-west) and in the south. A large-scale, sandy flood-tidal delta appears around the Laotieshan Channel in the north. The asymmetric tidal currents flowing in and out of the channel are likely responsible for this feature, and ebb-tidal delta is not prominent. In contrast, the southern part of the strait exhibits two distinct sedimentary systems : (1) Shandong mud wedge: This system lies along the coast of the Shandong Peninsula, shaped by the substantial sediment supply from the Yellow River and the influence of coastal currents. (2) Scour troughs and sandy tidal deltas: These smaller features are attributed to the protective effect of islands present in the southern strait, combined with the abundant supply of fine-grained sediments. [Conclusions] This study highlights the critical role of the complex topography of the strait in the confinement in shaping regional sediment transport dynamics and the resulting distribution of sedimentary systems. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Acta Sedimentologica Sinica is the property of Acta Sedimentologica Sinica Editorial Office and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.14027/j.issn.1000-0550.2024.129
    Languages:
      – Code: chi
        Text: Chinese
    PhysicalDescription:
      Pagination:
        PageCount: 16
        StartPage: 961
    Subjects:
      – SubjectFull: Bo Hai (China)
        Type: general
      – SubjectFull: Yellow River (China)
        Type: general
      – SubjectFull: Shandong Peninsula (China)
        Type: general
      – SubjectFull: Shandong Sheng (China)
        Type: general
      – SubjectFull: Topography
        Type: general
      – SubjectFull: Hydrodynamics
        Type: general
      – SubjectFull: Grain size
        Type: general
      – SubjectFull: Sedimentary structures
        Type: general
      – SubjectFull: Tidal currents
        Type: general
      – SubjectFull: Coastal sediments
        Type: general
      – SubjectFull: Sediment sampling
        Type: general
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      – TitleFull: Control of Restrictive Topography in the Bohai Strait on Modern Sedimentary System Distribution.
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            NameFull: HUANG, YuTing
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            NameFull: SHAN, Xin
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            – D: 01
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              Text: Jun2026
              Type: published
              Y: 2026
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