The observed variations of the north intrusion of the bottom Taiwan Warm Current Inshore Branch and its response to wind

Wang, Jianfeng; Yu, Fei; Ren, Qiang; Si, Guangcheng; Wei, Chuanjie

doi:10.1016/j.rsma.2019.100690

Cited by 16 publications

(12 citation statements)

References 30 publications

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“…As a result, the TWC turned to bottom-intensified (Figure 9d), which was consistent with numerous observations (e.g., Guan & Fang, 2006;Ichikawa & Beardsley, 2002; H. J. Lee & Chao, 2003;Lie & Cho, 2016;J. Wang et al, 2019;Xuan et al, 2016;Xuan et al, 2017;Zhu et al, 2004).…”

Section: Vertical Structuresupporting

confidence: 90%

“…Especially in winter seasons, the TWC is bottom-intensified (D. Huang et al, 2016;Xuan et al, 2017;Zhu et al, 2004). Near 28.5°N, the TWC bifurcates into two branches, with one continues flowing northward toward the Changjiang River Estuary, the other is diverted eastward first, and then turns to the north toward the Tsushima/Korea (T/K) Strait (Lian et al, 2016;Qi et al, 2017;J. Wang et al, 2019;Zheng et al, 2009).…”

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confidence: 99%

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Modulation of Shelf Circulations Under Multiple River Discharges in the East China Sea

Wang

2021

JGR Oceans

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Marginal seas are primary fields for land-ocean interaction. Water mass and dissolved or suspended substances from both riverine and oceanic sources are transported and mixed, producing a highly dynamic and heavily productive area. It is reported that shelf ecosystems (tropical and non-tropical) primary productions are 8.37 × 10 15 gCyr −1 that supports 59.5% of primary production required to sustain world fisheries (Pauly & Christensen, 1995). Meanwhile, the continental shelves provide 90% of the global marine fishery capture, despite it covers only 7% of the global ocean area (Pauly et al., 2002). Dynamic processes determine the property and transport of water mass, thus play a substantial role in sustaining biogeochemical and ecological cycles. Riverine and oceanic waters are confluent in the marginal sea, with contrasting densities. The riverine freshwater produces a low-salinity plume that floats over ambient sea or extends along the coast as a buoyant coastal current (Yankovsky & Chapman, 1997), which is regulated by various external forcings such as wind, tides, and shelf circulations (

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Section: Vertical Structuresupporting

confidence: 90%

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confidence: 99%

Modulation of Shelf Circulations Under Multiple River Discharges in the East China Sea

Wang

2021

JGR Oceans

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“…The upshelf intrusion of shelf waters is intensified on the lee side of coastal promontories along the Zhejiang and Fujian coasts (Chen et al, 2014;Liu and Gan, 2014) as well as at the head of the submerged valley in the central ECS shelf and to the southeast of the Changjiang Estuary (Liu and Gan, 2015;Yuan et al, 2017), where a cold water center with high primary productivity is frequently observed (Shi and Wang, 2012). That upwelling in that submerged valley is strengthened by the baroclinicity of waters imposed by the extensive presence of buoyant waters from the Changjiang River discharge (Zhu, 2003), and it is considered to be the onshore branch of the TWWC over the shelf to the east of the 50 m isobath (Wang et al, 2019a). This spatially irregular distribution of upwelling circulation has been frequently reported in recent decades, and we have now recognized the importance of topography as well as tidally induced mixing in generating upwelling in the ECS.…”

Section: Coastal Currents In the Ecs And Southern Ys East China Sea Coastal Current (Ecscc)mentioning

confidence: 99%

Advances on Coastal and Estuarine Circulations Around the Changjiang Estuary in the Recent Decades (2000–2020)

Liu

Gan

et al. 2021

Front. Mar. Sci.

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Advances on the circulation in the Changjiang Estuary and adjacent East China Sea (ECS) and Yellow Sea (YS) coastal waters in the recent decades (2000–2020) are synthesized in this review. The circulation over the complicated bathymetry in the region is locally driven by winds, tides, as well as riverine discharge, and is remotely influenced by shelf currents between the 50 and 100-m isobaths through the cross-shelf exchanges. The interchange of the momentum and the freshwater pathway inside the Changjiang Estuary are jointly determined by tides and seasonally varying discharge and winds over the shelf. The buoyant waters are trapped inside the bulge that forms and expands over the shelf to the west of the 30-m isobath in the vicinity of Hangzhou Bay and the Changjiang Estuary. These buoyant waters are exported offshore by the shelf current, tidal mixing, and variations of wind patterns, forming the Changjiang River plume, which shows notable seasonality due to the reversal of both winds and shelf currents in the ECS and YS. Extensive spatial irregularities in the form of freshwater patches are present along its pathway to the Tsushima Strait in summer and to the Taiwan Strait in winter, respectively. Tides and the bathymetry irregularity have recently been found to play critical roles in determining the cross-shelf exchanges of water mass and momentum along the pathway of the ECS coastal current, and along this pathway, a year-round upslope intrusion of shelf waters appears in both summer and winter. Tides also play an important role in altering the expansion of the Changjiang River plume, cross-shelf extrusion of waters, and variation in the Yellow Sea Coastal Current over the shallow Subei Shoal.

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“…The high salinity tongue can intrude further north to the southwest of the Yellow Sea, because of the barotropic adjustment as described in [1]. Compared with the result in [8], using regular Cressman interpolation, this result can show more details of the intrusion process of the KBCNT and can help further explore the observation data.…”

Section: The 2d Rbf Methodsmentioning

confidence: 92%

“…Overall, the distribution and properties of water mass in the ECS shelf are affected by these complex currents [6]. The ECS water mass has attracted extensive attention and there has been lots of research with slightly distinct results [7,8]. With the continuous accumulation of data and the improvement of research technology, we have gained a deeper understanding of the ECS water mass.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Three-Dimensional Interpolation Method in Hydrologic Analysis in the East China Sea

Gao

Guo

Wang

et al. 2022

JMSE

Self Cite

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The water mass in the East China Sea (ECS) shelf has a complicated three-dimensional (3D) hydrologic structure. However, previous studies mostly concentrated on the sea surface based on the sparse in situ and incomplete satellite-derived observations. Therefore, the 3D interpolation technology was introduced for the reconstruction of hydrologic structure in the ECS shelf using in situ temperature and salinity observations in the summer and autumn of 2010 to 2011. Considering the high accuracy and good fitness of the radial basis function (RBF) methods, we applied the RBF methods to the in situ observations to completely reconstruct the 3D hydrologic fields. Other 3D interpolation methods and 2D methods were also tested for a comparison. The cubic and thin plate spline RBFs were recommended because their mean absolute error (MAE) in the 10-fold cross-validation experiments maintained the order of ~10−2. The 3D RBF reconstructions showed a reasonable 3D hydrologic structure and extra details of the water masses in the ECS shelf. It also helps evaluate regional satellite-derived sea surface temperature (SST). Comparisons between the interpolated and satellite-derived SST indicates that the large bias of satellite-derived SST in the daytime corresponds to weak mixing during low-speed wind and shows seasonal variation.

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The observed variations of the north intrusion of the bottom Taiwan Warm Current Inshore Branch and its response to wind

Cited by 16 publications

References 30 publications

Modulation of Shelf Circulations Under Multiple River Discharges in the East China Sea

Modulation of Shelf Circulations Under Multiple River Discharges in the East China Sea

Advances on Coastal and Estuarine Circulations Around the Changjiang Estuary in the Recent Decades (2000–2020)

Assessment of Three-Dimensional Interpolation Method in Hydrologic Analysis in the East China Sea

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