Interaction and generation of long-crested internal solitary waves in the South China Sea

Chen, Guan-Yu; Liu, Cho-Teng; Wang, Yu-Huai; Hsu, Ming-Kuan

doi:10.1029/2010jc006392

Cited by 25 publications

(24 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The 1-dimensional KdV equation model, extended-KdV equation model, and regularized long wave (RLW) equation model, which were applicable to unidirectional ISWs, were commonly used (Grimshaw et al 2007), and usually some modifications were carried out to make the equation model more applicable to real oceanographic situations (Liu et al 1998;Cai et al 2002a). An approach that included two horizontal dimension effects, however only weakly, was the Kadomtsev and Petviashvili (K-P)-type equation model or the weakly dispersive depth-averaged equation model in a two-layer oceanic system (Lynett and Liu 2002;Cai and Xie 2010;Chen et al 2011). Both 1-dimensional and 2-dimensional propagation models were usually forced by solutions of a well-developed analytical soliton at the open boundaries.…”

Section: Propagation Of the Iswsmentioning

confidence: 99%

An Overview of Internal Solitary Waves in the South China Sea

2012

View full text Add to dashboard Cite

Internal solitary waves (ISWs) are the nonlinear large amplitude waves existing in the oceanic pycnocline. They are very active in the northern South China Sea (SCS). With more and more remote sensing data, in situ observational data and the development of the numerical simulation technology, a number of studies on the characteristics, the source site, the generation, and evolution of the ISWs in the SCS are reported. In this paper, earlier studies on the ISWs in the SCS are summarized and some problems worthy of study are put forward.

show abstract

Section: Propagation Of the Iswsmentioning

confidence: 99%

An Overview of Internal Solitary Waves in the South China Sea

2012

View full text Add to dashboard Cite

show abstract

“…The Philippine Sea is characterized by several strong generation sites of M 2 internal tides, including the Luzon Strait, Ryukyu Island chain, Bonin Ridge, and Mariana Arc, which are all distributed around the boundary area (Niwa & Hibiya, 2001;Simmons et al, 2004). The Luzon Strait can radiate energetic M 2 internal tides both westward into the South China Sea and eastward into the Philippine Sea, making it a research focus in the past decade (Alford et al, 2015;Buijsman et al, 2014;Chen et al, 2011;Farmer et al, 2011;Jan et al, 2008;Xu et al, 2013Xu et al, , 2014Xu et al, , 2016. The variability and energetics of M 2 internal tides around the Luzon Strait and Ryukyu Island chain were first investigated by numerical simulations assuming homogeneous stratification (Niwa & Hibiya, 2004).…”

Section: Introductionmentioning

confidence: 99%

Long‐Range Radiation and Interference Pattern of Multisource M₂ Internal Tides in the Philippine Sea

Wang

Yin

et al. 2018

JGR Oceans

View full text Add to dashboard Cite

Long‐range radiation and interference of M2 internal tides from multiple sources in the Philippine Sea are examined by driving a high‐resolution numerical model. The M2 internal tides are effectively generated around the boundary area, which includes the Luzon Strait, Ryukyu Island chain, Bonin Ridge, Mariana Arc, and Izu Ridge, favoring the occurrence of complex interference patterns. The local sources (mainly Daito Islands and Palau Ridge) inside the basin contribute to a small portion (~5%) of total energy but enhance the geographical inhomogeneity of the baroclinic field. The mode‐1 and mode‐2 M2 tidal beams from boundary sources radiate a long distance into the basin but exhibit different interference‐modulated geography variations. A 2‐D line source model characterizing interference can reproduce the general baroclinic field. Two notable interference cases are investigated: (1) the superposition of internal tides from Luzon Strait and Miyako Strait bifurcates into several southeastward beams, consistent with previous numerical simulations and altimeter measurements, and (2) the interference between Tokara Strait and Bonin Ridge exhibits a multiscale spatial pattern, which is modulated by the local generated energy and bathymetry features. Energetic dissipation occurs both near the boundary sources and in the basin. A locally dissipated fraction q of ~0.4 is estimated at the Luzon Strait and Bonin Ridge with continuous bathymetry features, while q of ~0.6 is estimated at the Ryukyu Island chain and Mariana Arc with discrete topographic variability. A lower locally dissipated fraction indicates a stronger energy flux radiating into the basin, where enhanced dissipation coincides closely with the interference‐modulated flux field.

show abstract

“…Satellite images show that near Luzon Strait the long ISW fronts tend to parallel to the line source sites [e.g., Zheng et al , ], as simulated in Zhang et al []. In the northeastern SCS deep basin, however, circular/cylindrical ISW fronts would appear more easily due to nonlinear effects [ Zhao et al , ; Chen et al , ]. Moreover, due to refraction and diffraction effects of bottom topography, distorted/cusped ISW fronts could be frequently observed [e.g., Li et al , ] and well simulated [ Zhang et al , ] after bypassing Dongsha Atoll and propagating onto continental shelf.…”

Section: Introductionmentioning

confidence: 99%

Distortion and broadening of internal solitary wavefront in the northeastern South China Sea deep basin

Xie

Lü

et al. 2016

Geophysical Research Letters

View full text Add to dashboard Cite

Internal solitary waves (ISWs) with peculiar fronts are frequently observed in the world ocean by satellite images, though with quite few explanations. In this study a distorted and broadening ISW front across the northeastern South China Sea deep basin is presented by using synthetic aperture radar (SAR) image. To illustrate this peculiar front, a nonlinear refraction model is developed to simulate and evaluate the effects of realistic bottom topography, current, and stratification on its transformation. Simulated results in realistic oceanic environments show good agreements with this SAR‐observed front. Based on separate and comparative results in different background environments, we demonstrate that the distortion is actually caused by the strong mesoscale currents at periphery of an anticyclonic eddy. Moreover, the broadening is due to the difference in change of wave half width at different rays, which is associated with the different transformation of ISWs across variable bottom topography in the deep basin.

show abstract

Interaction and generation of long-crested internal solitary waves in the South China Sea

Cited by 25 publications

References 25 publications

An Overview of Internal Solitary Waves in the South China Sea

An Overview of Internal Solitary Waves in the South China Sea

Long‐Range Radiation and Interference Pattern of Multisource M₂ Internal Tides in the Philippine Sea

Distortion and broadening of internal solitary wavefront in the northeastern South China Sea deep basin

Contact Info

Product

Resources

About

Interaction and generation of long-crested internal solitary waves in the South China Sea

Cited by 25 publications

References 25 publications

An Overview of Internal Solitary Waves in the South China Sea

An Overview of Internal Solitary Waves in the South China Sea

Long‐Range Radiation and Interference Pattern of Multisource M2 Internal Tides in the Philippine Sea

Distortion and broadening of internal solitary wavefront in the northeastern South China Sea deep basin

Contact Info

Product

Resources

About

Long‐Range Radiation and Interference Pattern of Multisource M₂ Internal Tides in the Philippine Sea