scholarly journals Comparison of Simulated and Observed Current Velocities in Karimata and Gaspar Straits

Omni-Akuatika ◽  
2020 ◽  
Vol 16 (3) ◽  
pp. 42
Author(s):  
Mukti Trenggono ◽  
Bayu Priyono ◽  
Rizqi Rizaldi Hidayat ◽  
Teguh Agustiadi
Keyword(s):  
South China Sea ◽  
South China ◽  
Model Simulation ◽  
Ocean Model ◽  
The South China Sea ◽  
The South ◽  
Indonesian Seas ◽  
China Sea ◽  
Exchange Site ◽  
Uncertain Model

Karimata and Gaspar Straits were the connector between the South China Sea and Indonesian Seas, which played a role in transporting the Indonesian Through Flow. The current velocities in both straits were studied by comparing outputs from the INDO12 physical ocean model simulation against observation results from the South China Sea-Indonesian Seas Transport Exchange (SITE) program. In general, the magnitudes of the zonal and meridional model current velocities are weaker than observations. Notably, the B1 and B4 moorings show uncertain model values most of the time. It is understandable considering that B1 and B4 moorings are located in a narrow strait (Gaspar Strait), near the coasts. On the contrary, B2 and B3 moorings show comparable magnitude to the two zonal and meridional components' observations Keywords: Karimata Strait, Current Velocities, INDO12, SITE Program

Volume, heat, and freshwater transports from the South China Sea to Indonesian seas in the boreal winter of 2007–2008

2010 ◽  
Vol 115 (C12) ◽  
Author(s):  
Guohong Fang ◽  
R. Dwi Susanto ◽  
Sugiarta Wirasantosa ◽  
Fangli Qiao ◽  
Agus Supangat ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
The South China Sea ◽  
Boreal Winter ◽  
The South ◽  
Indonesian Seas ◽  
China Sea ◽  
Volume Heat

scholarly journals Seasonal Variability of Waves Within the Indonesian Seas and Its Relation With the Monsoon Wind

2021 ◽  
Vol 26 (3) ◽  
pp. 189-196
Author(s):  
Purwanto Purwanto ◽  
Denny Nugroho Sugianto ◽  
Muhammad Zainuri ◽  
Galuh Permatasari ◽  
Warsito Atmodjo ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Wind Wave ◽  
Surface Wind ◽  
The South China Sea ◽  
The South ◽  
Indonesian Seas ◽  
China Sea ◽  
Arafura Sea ◽  
Monsoon Wind

The previous studies have simulated the variability of the wave within the Indonesian seas which showed that the variability of wave follows the seasonal pattern. However, their analysis only consider the influence of local wind forcings. The bias and error of their simulated wave were also unclear. In the present study, we investigate the variability of wave within the Indonesian seas and its relation with the surface wind speed using the combination of reanalysis and remote sensing data with high accuracies. We split the analysis into swell and wind wave to obtain the influence of local and remote wind forcings. We show that at the inner seas (i.e., the South China Sea, Java Sea, Flores Sea, Banda Sea and Arafura Sea), the variability of significant wave height (SWH) is majorly influenced by the variability of the speed of monsoon wind. The maximum SWH during Northwest monsoon (NWM) season is located at the South China Sea while during Southeast monsoon (SEM) season is at Arafura Sea. This indicates that the wind wave (sea) is dominant at the inner seas. At the open seas (i.e., Pacific Ocean and Indian Ocean) the variability of SWH less corresponds to the the speed of monsoon wind. The remote wind forcings control the wave variability in the open ocean area. This indicates that swell is dominant at the open seas. In general, the magnitude of SWHswell is also more than SWHsea within the Indonesian seas.

One-dimensional ocean model with three types of vertical velocities: a case study in the South China Sea

2017 ◽  
Vol 67 (2) ◽  
pp. 253-262 ◽  
Author(s):  
Wenfang Lu ◽  
Xiao-Hai Yan ◽  
Lu Han ◽  
Yuwu Jiang
Keyword(s):  
South China Sea ◽  
South China ◽  
Ocean Model ◽  
The South China Sea ◽  
The South ◽  
One Dimensional ◽  
China Sea

Polyipnus danae n.sp. (Stomiiformes: Sternoptychidae): a new hatchetfish species from the South China Sea

1990 ◽  
Vol 68 (6) ◽  
pp. 1112-1114
Author(s):  
Antony S. Harold
Keyword(s):  
South China Sea ◽  
South China ◽  
The South China Sea ◽  
Western Pacific Ocean ◽  
The South ◽  
Indonesian Seas ◽  
China Sea ◽  
Close Relationship ◽  
Gill Raker ◽  
A New Species

A new species of the marine hatchetfish genus Polyipnus is described, based upon two collections from the South China Sea, western Pacific Ocean. The specimens, collected in 1929 during the circumglobal MV Dana expedition, were not examined in detail until recently. Although Polyipnus danae n.sp. is distinguished from all other species of Polyipnus by a single long spine on each posttemporal bone and 11 or 12 anal photophores, these features and its low gill-raker counts suggest a close relationship to species of the P. laternatus Garman complex, especially to P. aquavitus Baird and P. unispinus Schultz which also occur in Indonesian seas.

scholarly journals Response of near-inertial energy to a supercritical tropical cyclone and jet in the South China Sea: modelling study

Ocean Science ◽  
2020 ◽  
Vol 16 (5) ◽  
pp. 1095-1110
Author(s):  
Hiu Suet Kung ◽  
Jianping Gan
Keyword(s):  
Tropical Cyclone ◽  
South China Sea ◽  
Gravity Waves ◽  
South China ◽  
Ocean Model ◽  
The South China Sea ◽  
The South ◽  
Horizontal Advection ◽  
China Sea ◽  
Relaxation Stage

Abstract. We used a well-validated three-dimensional ocean model to investigate the process of energetic response of near-inertial oscillations (NIOs) to a tropical cyclone (TC) and strong background jet in the South China Sea (SCS). We found that the NIO and near-inertial kinetic energy (KEni) varied distinctly during different stages of the TC forcing, and the horizontal and vertical transport of KEni was largely modulated by the velocity and vorticity of the jet. The KEni reached its peak value within ∼1/2 the inertial period after the initial TC forcing stage in the upper layer, decayed quickly by 1∕2 in the next 2 d, and further decreased at a slower rate during the relaxation stage of the TC forcing. Analyses of the KEni balance indicate that the weakened KEni in the upper layer during the forcing stage was mainly attributed to the downward KEni transport due to pressure work through the vertical displacement of isopycnal surfaces, while upward KEni advection from depths also contributed to the weakening in the TC-induced upwelling region. In contrast, during the relaxation stage as the TC moved away, the effect of vertical advection on KEni reduction was negligible and the KEni was chiefly removed by the outward propagation of inertial-gravity waves, horizontal advection, and viscous dissipation. Both the outward wave propagation and horizontal advection by the jet provided the KEni source in the far field. During both stages, the negative geostrophic vorticity south of the jet facilitated the vertical propagation of inertial-gravity waves.

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