The geometry of mesoscale eddies in the South China Sea: characteristics and implications

Han, Guiyan; Tian, Feng; Ma, Chunyong; Chen, Ge

doi:10.1080/17538947.2020.1842523

Cited by 5 publications

(6 citation statements)

References 36 publications

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“…Data required for the hydrodynamic flow model from MIKE 21 consists of bathymetry and topography data, river discharge from the main connected river, meteorological parameters, sediment properties and bed resistance. Figure 1 depicted a location of the study area and situated facing the South China Sea which the tidal dynamic and circulation of current pattern in this area are mostly influenced by the geographical, topographical and monsoon winds which agreed by many previous studies (Wyrtki, 1961;Chu et al, 2004;Zu et al, 2008;Han et al, 2021). For Kelantan Coast model, the computational domain is enclosed by four boundaries consists of the shoreline, an offshore boundary, and two open cross-sections in the lateral boundary (Ding et al, 2016).…”

Section: Methodssupporting

confidence: 70%

Evaluation of coastal hydrodynamic performance using statistical analysis at the Kelantan coast, Malaysia

et al. 2021

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Coastal zones are vulnerable to the effects of nature and man, as well as being physically volatile. The interaction of hydrodynamic conditions in coastal areas is a complex phenomenon. Considering the characteristics in this specific area, understanding its hydrodynamic behaviour should be obviously clarified. Thus, the hydrodynamic characteristics for Kelantan coast had been simulated using a numerical software of MIKE 21 Hydrodynamic FM. To assess the performance of the model, a combination of time series analysis and statistical evaluation were carried out against two weeks of observed data. Time series analysis shows a good agreement with the field measurements for both magnitude and phase. Statistical analysis using Root Mean Squared Errors (RMSE) and Regression analysis (R 2 ) for current speed and water level were analysed. The results indicate that the RMSE for current speed are 8.97% and 8.00% for ADCP 1 and ADCP 2, respectively while the RMSE for water level is 8.89 %. Through the regression analysis, the output indicates that the numerical model is in a good performance as the R2 ranged from 0.72 to 0.9. Both time series and statistical approach were successfully utilised in the hydrodynamic model to determine the performance of the coastal hydrodynamic characteristics in Kelantan's coastline. The output model can provide important information, especially on the coastal management and landuse planning for the developers, planners and state authority.

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Section: Methodssupporting

confidence: 70%

Evaluation of coastal hydrodynamic performance using statistical analysis at the Kelantan coast, Malaysia

et al. 2021

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“…(2019) and Han et al. (2021). First, the eddy boundary

{P}_{o}=\left({x}_{Po},{y}_{Po}\right)

was transformed from an earth‐centric coordinate

{C}_{o}=\left({x}_{Co},{y}_{Co}\right)

to an eddy‐centric coordinate C by using the following equations

{x}_{Pc}^{\prime }=\left({x}_{Po}-{x}_{Co}\right)\times \lambda \times \mathrm{cos}\left({y}_{Po}\right)

{y}_{Pc}^{\prime }=\left({y}_{Po}-{y}_{Co}\right)\times \lambda

C=(0,0)

…”

Section: Methodsmentioning

confidence: 96%

“…We fitted the eddy boundary into the best ellipse by referring to Chen et al (2019) and Han et al (2021). First, the eddy boundary 𝐴𝐴 𝐴𝐴𝑜𝑜 = (𝑥𝑥𝐴𝐴𝑜𝑜, 𝑦𝑦𝐴𝐴𝑜𝑜) was transformed from an earth-centric coordinate 𝐴𝐴 𝐴𝐴𝑜𝑜 = (𝑥𝑥𝐴𝐴𝑜𝑜, 𝑦𝑦𝐴𝐴𝑜𝑜) to an eddy-centric coordinate C by using the following equations…”

Section: Elliptic Fitting Of Eddiesmentioning

confidence: 99%

“…(2019), Han et al. (2021), and Chen et al. (2021) studied the eddy spatial patterns from sea surface height and sea surface temperature anomalies with ellipse and egg‐like shapes.…”

Section: Introductionmentioning

confidence: 99%

“…However, eddy variability in the global ocean exhibits anisotropy (Stewart et al, 2015). Chen et al (2019), Han et al (2021), and Chen et al (2021) studied the eddy spatial patterns from sea surface height and sea surface temperature anomalies with ellipse and egg-like shapes. The Kuroshio, as the energetic WBC in the northwestern subtropical Pacific, is frequently affected by eddy-mean flow interactions and accompanied by large eddy variability.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Eddy Deformation and Kinetic Energy Conversion During the Eddy‐Kuroshio Interaction East of Taiwan

Wang

Liu

et al. 2023

JGR Oceans

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Ocean energy cascades often occur in the Western Boundary Current (WBC) region, and eddy-mean flow interactions are one of the causes of energy cascades (e.g., Arbic et al., 2013). Many researchers have investigated eddy-mean flow interactions from the Euler field, which commonly uses the Lorentz energy cycle (LEC) (Lorenz, 1955;Oort & Peixoto, 1983;Von Storch et al., 2012). The LEC based on the Reynolds decomposition of the velocity field or density field is a typical Euler method, which divides the velocity or density field into mean flow and perturbed flow. By using this method, researchers have gained a certain understanding of the eddymean flow interaction from energetics. In the WBC region, the eddy-mean flow interaction shows significant along-stream variability, and eddy kinetic energy (EKE) is generated by mixed barotropic and baroclinic instabilities, but mesoscale eddies decay because of baroclinic inverse energy cascades (Kang & Curchitser, 2015;Yan et al., 2019). The process may be because the EKE and eddy available potential energy (EPE) decay rapidly

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Spatiotemporal characteristics of mesoscale eddies in the South China Sea and the influence mechanism of Eddy Kinetic Energy

Fan,

Qin,

Wang

et al. 2024

Atmospheric Research

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The geometry of mesoscale eddies in the South China Sea: characteristics and implications

Cited by 5 publications

References 36 publications

Evaluation of coastal hydrodynamic performance using statistical analysis at the Kelantan coast, Malaysia

Evaluation of coastal hydrodynamic performance using statistical analysis at the Kelantan coast, Malaysia

Eddy Deformation and Kinetic Energy Conversion During the Eddy‐Kuroshio Interaction East of Taiwan

Spatiotemporal characteristics of mesoscale eddies in the South China Sea and the influence mechanism of Eddy Kinetic Energy

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