Seasonal and spatial variations of kinematic parameters of internal solitary waves in the Andaman Sea

Yuqi Wu; Jieshuo Xie; Jiexin Xu; Zhiwu Chen; Yinghui He; Shuqun Cai

doi:10.1007/s13131-021-1854-7

Volume 41 Issue 4

Apr. 2022

Turn off MathJax

Article Contents

Article Navigation > Acta Oceanologica Sinica > 2022 > 41(4): 14-22

Yuqi Wu, Jieshuo Xie, Jiexin Xu, Zhiwu Chen, Yinghui He, Shuqun Cai. Seasonal and spatial variations of kinematic parameters of internal solitary waves in the Andaman Sea[J]. Acta Oceanologica Sinica, 2022, 41(4): 14-22. doi: 10.1007/s13131-021-1854-7

Citation:

Yuqi Wu, Jieshuo Xie, Jiexin Xu, Zhiwu Chen, Yinghui He, Shuqun Cai. Seasonal and spatial variations of kinematic parameters of internal solitary waves in the Andaman Sea[J]. Acta Oceanologica Sinica, 2022, 41(4): 14-22. doi: 10.1007/s13131-021-1854-7

Citation:

PDF( 10378 KB)

Seasonal and spatial variations of kinematic parameters of internal solitary waves in the Andaman Sea

doi: 10.1007/s13131-021-1854-7

Yuqi Wu^{1, 2, 5},
Jieshuo Xie^{1, 3},
Jiexin Xu^{1, 3
,
,},
Zhiwu Chen^{1, 3},
Yinghui He^{1, 3},
Shuqun Cai^{1, 3, 4
,
,}

1.
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
4.
Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China
5.
Marine Development Planning and Research Center of Guangdong Province, Guangzhou 510220, China

Funds: The Key Research Program of Frontier Sciences, Chinese Academy of Sciences under contract No. QYZDJ-SSW-DQC034; the Grant from Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) under contract No. GML2019ZD0304; the National Natural Science Foundation of China under contract Nos 41521005, 41776007 and 41776008; the Guangdong Natural Science Foundation under contract No. 2020A1515010495; the Grant from Chinese Academy of Sciences under contract No. ISEE2021PY01; the Guangzhou Science and Technology Program under contract No. 201804010373; the Youth Science and Technology Innovation Talent of Guangdong TeZhi Plan under contract No. 2019TQ05H519; the Pearl River S&T Nova Program of Guangzhou under contract No. 201806010091; the Rising Star Foundation of South China Sea Institute of Oceanology under contract No. NHXX2019WL0201; the Youth Innovation Promotion Association of Chinese Academy of Sciences under contract No. 2018378; the State Key Laboratory of Tropical Oceanolography Independent Research Program under contract No. LTOZZ2001.

More Information

Corresponding author: E-mail: manglo.xu@163.com; caisq@scsio.ac.cn
Received Date: 2021-01-21
Accepted Date: 2021-04-17

Available Online: 2022-02-24

Publish Date: 2022-04-01

Abstract

Abstract

The horizontally variable density stratification and background currents are taken into the variable-coefficent extended Korteweg-de Vries (evKdV) theory to obtain the geographical and seasonal distribution of kinematic parameters of internal solitary waves in the Andaman Sea (AS). The kinematic parameters include phase speed, dispersion parameter, quadratic and cubic nonlinear parameters. It shows that the phase speed and dispersion parameter are mainly determined by the topographic feature and have limited seasonal variation. The maximum phase speed is 2.6 m/s, which occurs in the cool season (November) in the middle of the AS, while the phase speed in the cool season is slightly larger than those in other seasons, up to 11.4% larger than that in the rainy season (July) in the southern AS. The dispersion parameter in the cool season can be 22.3% larger than that in the hot season. The nonlinear parameters have significant seasonal variation, and they can even change their signs at the continental slope in the north of the AS, from season to season. Meanwhile, the algebraic solitons dominate in the AS with minimum amplitudes (a_al) ranging from 0.1 m to 102 m, and the maximum a_al occurs in the cool season in the southern AS. The effect of the background flow on the parameters is also studied. The background flow has a great influence on the nonlinear parameters, e.g., the value of cubic nonlinear parameter can be reduced by 1/3 when the background flow is not considered.
- internal solitary waves,
- kinematic parameters,
- evKdV theory,
- Andaman Sea

FullText(HTML)

References(22)

References

[1]	Alpers W, Heng Wangchen, Hock L. 1997. Observation of internal waves in the Andaman Sea by ERS SAR. In: IGARSS'97.1997 IEEE International Geoscience and Remote Sensing Symposium Proceedings. Remote Sensing—A Scientific Vision for Sustainable Development. Piscataway: IEEE, 1518–1520
[2]	Apel J R, Thompson D R, Tilley D G, et al. 1985. Hydrodynamics and radar signatures of internal solitons in the Andaman Sea. John Hopkins APL Technical Digest, 6(4): 330–337
[3]	Benney D J. 1966. Long non-linear waves in fluid flows. Journal of Mathematics and Physics, 45(1−4): 52–63. doi: 10.1002/sapm196645152
[4]	Cai Shuqun, Xie Jieshuo, Xu Jiexin, et al. 2014. Monthly variation of some parameters about internal solitary waves in the South China Sea. Deep-Sea Research Part I: Oceanographic Research Papers, 84: 73–85. doi: 10.1016/j.dsr.2013.10.008
[5]	da Silva J C B, Magalhaes J M. 2016. Internal solitons in the Andaman Sea: A new look at an old problem. Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2016, 9999: 42–54
[6]	Grimshaw R. 2001. Internal solitary waves. In: Grimshaw R, ed. Environmental Stratified Flows. Boston: Kluwer, 1–28
[7]	Grimshaw R, Pelinovsky E, Poloukhina O. 2002. Higher-order Korteweg–de Vries models for internal solitary waves in a stratified shear flow with a free surface. Nonlinear Processes in Geophysics, 9(3−4): 221–235
[8]	Grimshaw R, Pelinovsky E, Talipova T, et al. 2004. Simulation of the transformation of internal solitary waves on oceanic shelves. Journal of Physical Oceanography, 34(12): 2774–2791. doi: 10.1175/JPO2652.1
[9]	Grimshaw R, Pelinovsky E, Talipova T, et al. 2010. Internal solitary waves: propagation, deformation and disintegration. Nonlinear Processes in Geophysics, 17(6): 633–649. doi: 10.5194/npg-17-633-2010
[10]	Holloway P E, Pelinovsky E, Talipova T. 1999. A generalized Korteweg–de Vries model of internal tide transformation in the coastal zone. Journal of Geophysical Research: Oceans, 104(C8): 18333–18350. doi: 10.1029/1999JC900144
[11]	Hyder P, Jeans D R G, Cauquil E, et al. 2005. Observations and predictability of internal solitons in the northern Andaman Sea. Applied Ocean Research, 27(1): 1–11. doi: 10.1016/j.apor.2005.07.001
[12]	Kakutani T, Yamasaki N. 1978. Solitary waves on a two-layer fluid. Journal of the Physical Society of Japan, 45(2): 674–679. doi: 10.1143/JPSJ.45.674
[13]	Kurkina O, Rouvinskaya E, Talipova T, et al. 2017a. Propagation regimes and populations of internal waves in the Mediterranean Sea basin. Estuarine, Coastal and Shelf Science, 185: 44–54
[14]	Kurkina O, Talipova T, Soomere T, et al. 2017b. Kinematic parameters of internal waves of the second mode in the South China Sea. Nonlinear Processes in Geophysics, 24(4): 645–660. doi: 10.5194/npg-24-645-2017
[15]	Lamb K G, Yan Liren. 1996. The evolution of internal wave undular bores: comparisons of a fully nonlinear numerical model with weakly nonlinear theory. Journal of Physical Oceanography, 26(12): 2712–2734. doi: 10.1175/1520-0485(1996)026<2712:TEOIWU>2.0.CO;2
[16]	Liao Guanghong, Xu Xiaohua, Liang Chujin, et al. 2014. Analysis of kinematic parameters of internal solitary waves in the northern South China Sea. Deep–Sea Research Part I: Oceanographic Research Papers, 94: 159–172. doi: 10.1016/j.dsr.2014.10.002
[17]	Magalhaes J M, da Silva J C B. 2018. Internal solitary waves in the Andaman Sea: new insights from SAR imagery. Remote Sensing, 10(6): 861. doi: 10.3390/rs10060861
[18]	Osborne A R, Burch T L. 1980. Internal solitons in the Andaman Sea. Science, 208(4443): 451–460. doi: 10.1126/science.208.4443.451
[19]	Perry R B, Schimke G R. 1965. Large-amplitude internal waves observed off the northwest coast of Sumatra. Journal of Geophysical Research, 70(10): 2319–2324. doi: 10.1029/JZ070i010p02319
[20]	Wang Juan, Yang Jingsong, Zhou Liying, et al. 2019. Distribution of internal waves in the Andaman Sea and its adjacent waters based on multi-satellite remote sensing data. Journal of Marine Sciences, 37(3): 1–11
[21]	Zhou Xianchi, Grimshaw R. 1989. The effect of variable currents on internal solitary waves. Dynamics of Atmospheres and Oceans, 14: 17–39. doi: 10.1016/0377-0265(89)90055-9
[22]	Zhou Liying, Yang Jingsong, Wang Juan, et al. 2016. Spatio-temporal distribution of internal waves in the Andaman Sea based on satellite remote sensing. In: 2016 9th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics (CISP-BMEI). Piscataway: IEEE, 624–628