Distortion and broadening of internal solitary wavefront in the northeastern South China Sea deep basin
Abstract 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 apert...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-07-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2016GL070093 |
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| author | Jieshuo Xie Yinghui He Haibin Lü Zhiwu Chen Jiexin Xu Shuqun Cai |
| author_facet | Jieshuo Xie Yinghui He Haibin Lü Zhiwu Chen Jiexin Xu Shuqun Cai |
| author_sort | Jieshuo Xie |
| collection | DOAJ |
| description | Abstract 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. |
| format | Article |
| id | doaj-art-88ccbe2bbea146c58d94fbcab501992e |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2016-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-88ccbe2bbea146c58d94fbcab501992e2025-08-20T02:31:41ZengWileyGeophysical Research Letters0094-82761944-80072016-07-0143147617762410.1002/2016GL070093Distortion and broadening of internal solitary wavefront in the northeastern South China Sea deep basinJieshuo Xie0Yinghui He1Haibin Lü2Zhiwu Chen3Jiexin Xu4Shuqun Cai5State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology CAS Guangzhou ChinaState Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology CAS Guangzhou ChinaState Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology CAS Guangzhou ChinaState Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology CAS Guangzhou ChinaState Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology CAS Guangzhou ChinaState Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology CAS Guangzhou ChinaAbstract 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.https://doi.org/10.1002/2016GL070093internal solitary wavefrontsatellite observationsnonlinear refraction modelnortheastern South China Sea deep basin |
| spellingShingle | Jieshuo Xie Yinghui He Haibin Lü Zhiwu Chen Jiexin Xu Shuqun Cai Distortion and broadening of internal solitary wavefront in the northeastern South China Sea deep basin Geophysical Research Letters internal solitary wavefront satellite observations nonlinear refraction model northeastern South China Sea deep basin |
| title | Distortion and broadening of internal solitary wavefront in the northeastern South China Sea deep basin |
| title_full | Distortion and broadening of internal solitary wavefront in the northeastern South China Sea deep basin |
| title_fullStr | Distortion and broadening of internal solitary wavefront in the northeastern South China Sea deep basin |
| title_full_unstemmed | Distortion and broadening of internal solitary wavefront in the northeastern South China Sea deep basin |
| title_short | Distortion and broadening of internal solitary wavefront in the northeastern South China Sea deep basin |
| title_sort | distortion and broadening of internal solitary wavefront in the northeastern south china sea deep basin |
| topic | internal solitary wavefront satellite observations nonlinear refraction model northeastern South China Sea deep basin |
| url | https://doi.org/10.1002/2016GL070093 |
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