Influence of Potential Future Sea-Level Rise on Tides in the China Sea

Kuang, Chunxiang; Liang, Hongyu; Mao, Xiaodan; Karney, Bryan W.; Gu, Jie; Huang, Hongcheng; Chen, Wei; Song, Hao

doi:10.2112/jcoastres-d-16-00057.1

Cited by 20 publications

(32 citation statements)

References 46 publications

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“…is limited (<0.02 m in tidal amplitude), according to previous studies over a regional or global scale (Kuang et al, 2016;Pickering et al, 2017;Zhou et al, 2016).…”

Section: Journal Of Geophysical Research: Oceansmentioning

confidence: 86%

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Tidal Responses to Future Sea Level Trends on the Yellow Sea Shelf

Feng

et al. 2019

JGR Oceans

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Quantifying how tides evolve with coupling between future sea level rise (SLR) and different coastline configurations is imperative for proposing appropriate coastal defense strategies. By using numerical models, we investigated tidal changes and determined a realistic trend of SLR on the Jiangsu coastal area and adjacent sea on the Yellow Sea shelf. A notable decrease in tidal range occurs in the northern shelf, and the tide increases mainly in the southern shelf. Tidal changes are of both signs, while the increase in sea level is unidirectional. Thus, the SLR effect on tide is not additive in all locations. We also explored the nonlinearity and spatial similarity in tidal range in response to the SLR considering uniform SLR scenarios with multiple levels and allowing inundation of the natural coastline. The patterns of change in tide evolution on the study domain remain linear until the SLR exceeds 2.0 m. Simulations and comparisons are further conducted between the responses of hardened and natural shoreline configurations to SLR. Hardened shoreline introduces both local and remote spatial variability in tidal responses. On the regional scale, SLR induces a shift in the tidal system in the offshore region, which controls the net energy flux into the embayment upon the coast. On the local scale, tidal dynamics are mainly a competition between net energy flux and tidal dissipation and are plausibly influenced by tidal reflection, which depends on whether a basin is tidally reflective.

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“…is limited (<0.02 m in tidal amplitude), according to previous studies over a regional or global scale (Kuang et al, 2016;Pickering et al, 2017;Zhou et al, 2016).…”

Section: Journal Of Geophysical Research: Oceansmentioning

confidence: 86%

“…Journal of Geophysical Research: Oceans phase lines (e.g., Idier et al, 2017;Kuang et al, 2016). By drawing and comparing the co-chart of tidal waves and identifying the amphidromic points, we can then infer how the tidal dynamics change.…”

Section: 1029/2019jc015150mentioning

confidence: 99%

Tidal Responses to Future Sea Level Trends on the Yellow Sea Shelf

Feng

et al. 2019

JGR Oceans

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“…In addition, changes of tidal constituents caused by SL rise are considered. Kuang et al () indicate that change of tidal characteristics in the eastern open boundary of this model is little, while the M2 and K1 amplitudes of the western open boundary will increase by 5% and 1%, respectively, if SL rises by 0.5 m. Approximately, as SL rises by 0.2 m (A3 and A5) and 0.4 m (A4 and A6), the M2 amplitude of western open boundary is projected to increase by 2% and 4%, respectively, and the K1 amplitude is projected to increase by 0.4% and 0.8%.…”

Section: Methodsmentioning

confidence: 82%

Effect of Runoff Variability and Sea Level on Saltwater Intrusion: A Case Study of Nandu River Estuary, China

Zhang

Sheng

et al. 2018

Water Resources Research

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Saltwater intrusion exits in estuary areas. Significant change in runoff variability (RV) has been detected in many basins, but limited research has investigated this change's effect on downstream saltwater intrusion. Using measured time series, this study has statistically detected a significant trend of increased RV and sea level (SL) rise in Nandu River Estuary, China, and analyzed their effect on the saltwater intrusion combining the Finite Volume Community Ocean Model and Monte Carlo method. The Mann-Kendall test and Theil-Sen estimator show that the yearly variance of the log-transformed runoff and mean SL have significantly increased and are expected to increase by approximately 50% and 0.2 m by the 2060s, respectively, and 101% and 0.4 m by the 2100s. SL rise increases the salinity-exceeding rate (salinity > 0.45‰, the standard for drinking water), and the increase in middle channels are higher than that of upstream and downstream channels. With an increased RV, the model-predicted salinity-exceeding rate decreases at downstream and increases at upstream channels, respectively. In our specific site, the location with a constant salinity-exceeding rate is predicted to move downstream, and the maximum increase of salinity-exceeding rate will reach 13.3% and 19.1% in the 2060s and 2100s, respectively, at the middle channel section. The results are validated in Yangtze River Estuary and are generalized to other estuaries to determine the change pattern of salinity-exceeding rate. Moreover, a lower RV helps to extend the channel length with fresh water available and can be used as a management tool.

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“…MIKE 21 contains an extensive range of hydraulic phenomena and can be used to simulate any two-dimensional free-surface flow that ignores stratification. An increasing number of engineers and scientists around the world now rely on MIKE 21 as a key simulation tool [16,29,30].…”

Section: Introductionmentioning

confidence: 99%

Impact of spring freshet flooding and summer rainfall flooding on the water quality of an alpine barrier lake

Li³

et al. 2020

Environ Sci Eur

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Background: Barrier lakes, formed by river interception, are particularly influenced by the upstream river. As such, spring freshet flooding and summer rainfall flooding due to wet precipitation (e.g. snow and rainfall) may sharply increase the concentrations of nitrogen, phosphorous, and carbon compounds in barrier lakes. Too much nutrients will lead to lake eutrophication. In this study, we used Lake Jingpo, the world's second largest alpine barrier lake, to examine the impact of spring freshet flooding and summer rainfall flooding on its water quality by building a hydrodynamic water quality model with MIKE 21. Results: The MIKE 21 HD hydrodynamic model and MIKE 21 AD convection and diffusion module were calibrated using meteorological data, hydrological data, and water quality data collected in 2018. All errors were in the acceptable range. According to model simulation results, the flow velocity in Lake Jingpo is generally weak (mostly lower than 0.015 m/s), but it increases to 0.045 m/s and above during spring freshet flooding (April-May) and summer rainfall flooding (August-September), which is much higher than in other months. The flow volume of its largest inflowing river reaches 4.81 × 10 8 m 3 , 29.77 × 10 8 m 3 , and 58.4 × 10 8 m 3 during spring freshet flooding, summer rainfall flooding, and 30-year frequency rainfall flooding period, respectively. The longest diffusion distances from the lake mouth to the downstream way are 16.3 km, 33.1 km, and 43.6 km during the spring freshet flooding, summer rainfall flooding, and 30-year frequency rainfall flooding period, respectively. A larger amount of precipitation leads to longer diffusion distances and increased concentrations of total nitrogen (TN), total phosphorous (TP), chemical oxygen demand (COD Mn), and ammonia-nitrogen (NH 4-N) in the lake. Conclusions: The sudden increase in water volume during spring flooding and summer rainfall flooding led to the rapid spread of nutrients and pollutants carried by the water into the barrier lake, resulting in a deterioration of lake water quality. In addition to pollution source control measures, ecological restoration, and the construction of a buffer system in the catchment are very important measures to effectively improve the buffer capacity of barrier lakes in light of spring freshet flooding and summer rainfall flooding.

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Influence of Potential Future Sea-Level Rise on Tides in the China Sea

Cited by 20 publications

References 46 publications

Tidal Responses to Future Sea Level Trends on the Yellow Sea Shelf

Tidal Responses to Future Sea Level Trends on the Yellow Sea Shelf

Effect of Runoff Variability and Sea Level on Saltwater Intrusion: A Case Study of Nandu River Estuary, China

Impact of spring freshet flooding and summer rainfall flooding on the water quality of an alpine barrier lake

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