scholarly journals Physical Forcing-Driven Productivity and Sediment Flux to the Deep Basin of Northern South China Sea: A Decadal Time Series Study

2018 ◽  
Vol 10 (4) ◽  
pp. 971 ◽  
Author(s):  
Hon-Kit Lui ◽  
Kuang-Yu Chen ◽  
Chen-Tung Chen ◽  
Bo-Shian Wang ◽  
Hui-Ling Lin ◽  
...  
Keyword(s):  
Time Series ◽  
South China Sea ◽  
South China ◽  
Northern South China Sea ◽  
Sediment Flux ◽  
Deep Basin ◽  
Time Series Study ◽  
China Sea ◽  
Physical Forcing ◽  
Series Study

scholarly journals The SouthEast Asian Time-series Study (SEATS) and the biogeochemistry of the South China Sea—An overview

2007 ◽  
Vol 54 (14-15) ◽  
pp. 1434-1447 ◽  
Author(s):  
George T.F. Wong ◽  
Teh-Lung Ku ◽  
Margaret Mulholland ◽  
Chun-Mao Tseng ◽  
Dong-Ping Wang
Keyword(s):  
Time Series ◽  
South China Sea ◽  
South China ◽  
Southeast Asian ◽  
The South China Sea ◽  
The South ◽  
Time Series Study ◽  
China Sea ◽  
Series Study

scholarly journals Seasonal distributions and fluxes of <sup>210</sup>Pb and <sup>210</sup>Po in the northern South China Sea

2014 ◽  
Vol 11 (23) ◽  
pp. 6813-6826 ◽  
Author(s):  
C.-L. Wei ◽  
M.-C. Yi ◽  
S.-Y. Lin ◽  
L.-S. Wen ◽  
W.-H. Lee
Keyword(s):  
Time Series ◽  
South China Sea ◽  
Water Column ◽  
South China ◽  
Time Series Data ◽  
Northern South China Sea ◽  
Sediment Traps ◽  
Series Data ◽  
Secular Equilibrium ◽  
China Sea

Abstract. Vertical distributions of dissolved and particulate 210Pb and 210Po in the water column at the SouthEast Asian Time-series Study (SEATS, 18°00´ N and 116°00´ E) station in the northern South China Sea were determined from four cruises between January 2007 and June 2008. A large deficiency of 210Pb, 379 ± 43 × 103 dpm m−2, from the secular equilibrium was found within the 3500 m water column. On the other hand, a smaller deficiency of 210Po, 100 ± 21 × 103 dpm m−2, relative to 210Pb was found in the water column. Time-series data showed insignificant temporal variability of the 210Pb and 210Po profiles. To balance these deficiencies, the removal fluxes for 210Pb and 210Po via particle settling ranging from 45 to 51 dpm m−2d−1 and from 481 to 567 dpm m−2d−1, respectively, are expected at 3500 m. The 210Pb removal flux is comparable with, whereas the 210Po removal flux is much higher than, the flux directly measured by moored sediment traps. The discrepancy between the modeled 210Po flux and the measured flux suggests that sporadic events that enhance 210Po removal via sinking ballast may occur in the water column at the site.

Clinoform growth and sediment flux of Late Cenozoic Yinggehai and Qiongdongnan shelf margins, Northern South China Sea

2021 ◽  
Author(s):  
Si Chen ◽  
Hua Wang ◽  
Jianghao Ma ◽  
Tianhao Gong ◽  
Zhenghong Yu
Keyword(s):  
South China Sea ◽  
South China ◽  
Northern South China Sea ◽  
Sediment Flux ◽  
Shelf Edge ◽  
Late Cenozoic ◽  
China Sea ◽  
Shelf Margin ◽  
Shelf Margins ◽  
Basin Margin

&lt;p&gt;This study discusses the sedimentary flux, and sedimentary system source tracking on the shelf margins of Yinggehai (YGH) and Qiongdongnan (QDN) Basins, Northern South China Sea. The shelf margin clinoforms of YGH and QDN Basins, have grown since the Late Cenozoic (10.5 Ma), which generated more than 4 km-thick shelf prism above the T40 surface. By using the core, well drilling data, 2D and 3D seismic surveys, this study aims to: &amp;#9312; demonstrate the geometry morphology and architecture of the clinoforms, while the shelf margin trajectory (including the shelf-edge trajectory and toe of slope trajectory) showing down-flatting and rising patterns where the progradation and aggradation happened through the vertical evolution; &amp;#9313; estimate sediment supply values, load volumes, and their changes since the Late Cenozoic, predict ratio of the sediment flux across shelf-edge during their dynamic processes; &amp;#9314; investigate the contradiction and correlation among the phenomena that sediments show distinctly increasing in flux, decreasing in grain size, and response delay of flux rate peak since 2-4 Ma. The preliminary results show that the vertical sediment accumulation rate increased significantly across the entire YGH and QDN Basin margin system after 2.4 Ma, with a marked increase in mud content that likely caused by long&amp;#8208;distance, alongshore currents with high content of mud during the Pleistocene. Furthermore, laterally, the estimated total sediment flux onto the margin shows a dramatic decline from west to east while moving away from the Red River depocenter, as well as a decrease in the percentage of total discharge crossing the shelf break in this same direction. The overall margin geometry shows a remarkable change from sigmoidal, strongly progradational and aggradational in the west to weakly progradational in the east of QDN Basin margin. The Late Cenozoic shelf margin growth, with its overall increased sediment flux, responded to global, high&amp;#8208;frequency transgressive&amp;#8208;regressive climate cycles during a falling global sea level and gradual cooling temperature in this icehouse period.&lt;/p&gt;

Depth distributions of alkalinity, TCO2 and at SEATS time-series site in the northern South China Sea

2007 ◽  
Vol 54 (14-15) ◽  
pp. 1469-1485 ◽  
Author(s):  
W.C. Chou ◽  
D.D. Sheu ◽  
B.S. Lee ◽  
C.M. Tseng ◽  
C.T.A. Chen ◽  
...  
Keyword(s):  
Time Series ◽  
South China Sea ◽  
South China ◽  
Northern South China Sea ◽  
China Sea ◽  
Depth Distributions

Sinking fluxes of 210 Pb and 210 Po in the deep basin of the northern South China Sea

2017 ◽  
Vol 174 ◽  
pp. 45-53 ◽  
Author(s):  
Ching-Ling Wei ◽  
Chao-Yuan Chia ◽  
Wen-Chen Chou ◽  
Wen-Huei Lee
Keyword(s):  
South China Sea ◽  
South China ◽  
Northern South China Sea ◽  
Deep Basin ◽  
China Sea

scholarly journals Impacts of a Mesoscale Eddy Pair on Internal Solitary Waves in the Northern South China Sea revealed by Mooring Array Observations

2017 ◽  
Vol 47 (7) ◽  
pp. 1539-1554 ◽  
Author(s):  
Xiaodong Huang ◽  
Zhiwei Zhang ◽  
Xiaojiang Zhang ◽  
Hongbao Qian ◽  
Wei Zhao ◽  
...  
Keyword(s):  
South China Sea ◽  
Solitary Waves ◽  
South China ◽  
Northern South China Sea ◽  
Mesoscale Eddy ◽  
Mesoscale Eddies ◽  
Internal Solitary Waves ◽  
Deep Basin ◽  
Coupled Models ◽  
China Sea

AbstractBoth internal solitary waves (ISWs) and mesoscale eddies are ubiquitous in the northern South China Sea (SCS). In this study, the authors examine the impacts of mesoscale eddies on the ISWs transiting the northern SCS deep basin that evolve from the steepening internal tide generated in the Luzon Strait, using in situ data collected from a specifically designed mooring array. From November 2013 to January 2014, an energetic mesoscale eddy pair consisting of one anticyclonic eddy (AE) and one cyclonic eddy (CE) propagated across the mooring array. Observations revealed that the amplitude, propagation direction, and speed of the transbasin ISWs were significantly modulated by the eddy pair. When the moorings were covered by the southern portion of the AE, the ISW amplitudes decreased by as much as 67% because of the thermocline deepening along the wave direction and the energy divergence along the wave front. When the moorings were covered by the northern portions of both eddies, the amplitude of ISWs also decreased but to a relatively smaller degree. ISWs propagated the fastest inside the southern portion of the AE, where both the thermocline deepening and eddy currents enhanced the propagation speed of ISWs. Under the influence of the AE (CE) core, ISWs propagated more northward (southward) than usual. The observational results reported here highlight the importance of resolving mesoscale eddies in circulation–internal wave coupled models to accurately predict kinematic characteristics of ISWs.

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