Effects of intertidal reclamation on tides and potential environmental risks: a numerical study for the southern Yellow Sea

Zhu, Qiao; Wang, Ya Ping; Ni, Wenfei; Gao, Jianhua; Li, Minliang; Lei, Yongmei; Gong, Xiao; Gao, Shu

doi:10.1007/s12665-016-6275-0

Cited by 22 publications

(20 citation statements)

References 43 publications

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“…(2013) and Zhu et al. (2016) showed increased TDA in the Xiyang channel under the effects of tidal ﬂat reclamation in the RSR, which is also observable in our data (Figure 3a) by comparing the Hard and Soft conditions , that is, Hard _s and Soft at Xiyang station. Song et al.…”

Section: Discussionsupporting

confidence: 88%

“…Zhu et al. (2016) described a conceptual model, suggesting that the tidal energy that used to be stored or dissipated by the intertidal area may be reflected back to the sea if the tidal flats are reclaimed. This conceptual model is verified in this study (refer to Figure 11).…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, a minimum of three σ ‐layers in the vertical direction were set to enable the functionality available with the 3D mode of FVCOM. To simplify the factors to the uncertainties in estimating the evolution of TDA due to bathymetric and topographic influences, meteorological forcing and oceanic currents were not included in the model, following previous analyses focusing on the tide‐morphologic interactions (Xing et al., 2012; Zhang et al., 2020; Zhu et al., 2016). Because there is no large river flow or estuarine system along the Jiangsu coast, no river flow was considered in the model setup.…”

Section: Methodsmentioning

confidence: 99%

“…This is due to the limitation on the detailed bathymetry of the nearshore region for the Jiangsu coastal domain. The phase profiles and amplitudes of the overtides or compound tides are quite sensitive to the nearshore bathymetry (Zhang et al., 2020; Zhu et al., 2016). Whereas, because the sign and magnitude of TDA relies mainly on the phase lag or amplitude ratio between the tidal constituents of the tidal interactions, the biases of a given harmonic constituent can be offset by another.…”

Section: Methodsmentioning

confidence: 99%

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On the Role of Anthropogenic Activity and Sea‐Level‐Rise in Tidal Distortion on the Open Coast of the Yellow Sea Shelf

Feng

2021

JGR Oceans

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This study investigates how varied coastline strategies and rising mean‐sea‐level influence tidal distortion along the open coast of the Yellow Sea shelf. The major contributors to tidal distortion were first identified. Then, the primary tidal constituents causing changes in tidal propagation and distortion in response to shoreline reconstruction management and near‐future sea‐level‐rise (SLR) were determined. The intrinsic mechanisms causing tidal duration asymmetry (TDA) were investigated and found to differ in various types of coastal systems. Specifically, the nonlinear tidal interaction between M2/M4, M2/S2/MS4 and K1/O1/M2 are the top three dominant contributors to TDA. The interactions between M2/M4 and M2/S2/MS4 are most sensitive to different coastline configurations and produce the largest evolution in tidal distortion. Two primary factors are (i) the location of the amphidromic point of the semidiurnal tides in the deep ocean, which controls the M2 and S2 energy fluxes into embayment, and (ii) the nondimensional amplitude (A/h), which importantly indicates tidal nonlinearity and determines shallow tide generation. For the coast with a progressive tidal system, tidal distortion and shallow‐water tide genesis depend mainly on the influx of semidiurnal tides from offshore, which is controlled by the position of the M2 amphidrome. For a coast with quasistanding tidal behavior, however, the scales and positions of tidal flats and shoals play vital roles in tidal distortion and the genesis of shallow‐water tides. Model simulations suggest that hardened shoreline or SLR could dampen the advection and bottom dissipation, thus reducing tidal distortion.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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On the Role of Anthropogenic Activity and Sea‐Level‐Rise in Tidal Distortion on the Open Coast of the Yellow Sea Shelf

Feng

2021

JGR Oceans

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“…The muddy coastlines bordering the Yellow sea are shaped by complex sedimentation and erosion processes in response to waves and currents, and react strongly to changes therein [12,13]. Large port developments will therefore affect the morphodynamic processes and morphology of the coast [14][15][16]. As earlier construction works within the Yellow and Yangtze Rivers also reduced sediment supply towards Yellow Sea intertidal areas, reducing accretion rates [17], the sedimentary habitats along the coast (saltmarshes and mudflats) will be greatly impacted.…”

Section: Introductionmentioning

confidence: 99%

Building for Nature: Preserving Threatened Bird Habitat in Port Design

Muller

Chan

Piersma

et al. 2020

Water

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The fast economic development of the People’s Republic of China has created an increasing demand for usable land, resulting in large-scale land reclamations along the coastal zone. One of these regions is Tongzhou Bay (Jiangsu coast), a region characterized by large intertidal mudflats and deep tidal channels with potential for the development of agri-aquaculture and the construction of a deep-sea port. However, these intertidal mudflats also provide vital ecosystem services and support many wildlife species, including several endangered migratory shorebirds within the East Asian–Australasian Flyway. With increasing realization of the importance of maintaining such ecological values, a more integrated coastal development strategy is needed. This study aims to develop a sustainable integrated design for the Tongzhou Bay port, following a “Building with Nature” approach. We use a morphodynamic model to compute habitat suitability for two shorebird species (Great Knot Calidris tenuirostris and Bar-tailed Godwit Limosa lapponica). Several port configurations were developed on the basis of three design criteria: (1) create area for future port development, whilst (2) preserving existing high-value ecotopes for shorebirds and (3) enhance the natural accretion rate of such ecotopes. Simulation results showed a clear difference in siltation patterns, preservation and enhancement of preferred ecotopes. This work therefore demonstrates the potential and importance of morphological and habitat suitability modelling when designing large-scale reclamations and port constructions, especially in dynamic areas such as Tongzhou Bay.

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Dynamics of offshore tidal sand ridges, a review

Swart

Yuan

2018

Environ Fluid Mech

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Tidal sand ridges are large-scale rhythmic bedforms that are observed on the offshore parts of shelf seas where sand is abundantly available. Spacings between successive ridges are several kilometres, they evolve on centennial time scales, and their crests are cyclonically rotated with respect to the direction of the principal tidal currents. Here, an overview will be presented of the current knowledge about these ridges with respect to their manifestation in different seas, their observed behaviour, the basic mechanisms that explain their initial formation and their evolution towards finite heights and the ability to model them. It will be shown that both tides, waves and changes in mean sea level have a profound impact on the evolution of the ridges.

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Effects of intertidal reclamation on tides and potential environmental risks: a numerical study for the southern Yellow Sea

Cited by 22 publications

References 43 publications

On the Role of Anthropogenic Activity and Sea‐Level‐Rise in Tidal Distortion on the Open Coast of the Yellow Sea Shelf

On the Role of Anthropogenic Activity and Sea‐Level‐Rise in Tidal Distortion on the Open Coast of the Yellow Sea Shelf

Building for Nature: Preserving Threatened Bird Habitat in Port Design

Dynamics of offshore tidal sand ridges, a review

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