Three-dimensional numerical simulation of M<sub>2</sub> internal tides in the Luzon Strait

LI Bingtian; CAO Anzhou; LV Xianqing

doi:10.1007/s13131-015-0748-y

吕宋海峡M₂内潮的三维数值模拟

doi: 10.1007/s13131-015-0748-y

中国海洋大学, 物理海洋教育部重点实验室, 青岛, 266003

基金项目: The National High Technology Research and Development Program (863 Program) of China under contract Nos 2013AA122803 and 2013AA09A502; the National Natural Science Foundation of China under contract Nos 41206001 and 41371496; the National Science and Technology Support Program under contract No. 2013BAK05B04.

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出版历程
- 收稿日期: 2015-03-19
- 修回日期: 2015-05-28

Three-dimensional numerical simulation of M₂ internal tides in the Luzon Strait

Key Laboratory of Physical Oceanography, Ocean University of China, Ministry of Education, Qingdao 266100, China

摘要

摘要: 本文利用一个三维密度坐标数值模型模拟了吕宋海峡的M₂内潮,研究了它的生成、传播、垂向结构和转化率等特征.模拟结果,尤其是模拟的潮流振幅,与观测结果符合良好,表明了该模型的合理性和准确性.研究发现M₂内潮水平方向传播主要有以下三条路径:向东进入西太平洋、向西至东沙群岛附近以及向西南方向传播进入南海.在水平方向上,离吕宋海峡越远,M₂内潮的潮流振幅越小;而在垂向上,潮流振幅随着深度的增加而减小.由于M₂内潮在超临界地形的反射,在吕宋海峡双脊之间会形成顺时针旋转的斜压能通量.受双脊高度和脊间距离的影响,M₂内潮在19.5°至21.5°N产生共振.M₂内潮在吕宋海峡能量转换约为14.20 GW.
- 内潮 /
- 数值模拟 /
- 吕宋海峡
Abstract: A three-dimensional isopycnic-coordinate internal tidal model is employed to investigate the generation, propagation, vertical structure and energy conversion of M₂ internal tides in the Luzon Strait (LS) with mooring observations. Simulated results, especially the tidal current amplitudes, agree well with observations, demonstrating the reasonability and accuracy of the model. Results indicate that M₂ internal tides mainly propagate into three directions horizontally, i.e., eastward towards the western Pacific Ocean, westward towards the Dongsha Island and southwestward towards the South China Sea Basin. In the horizontal direction, tidal current amplitudes decrease as distance increases away from the LS; in the vertical direction, they show an obvious decreasing tendency with depth. Between the double ridges of the LS, a clockwise gyre of M₂ baroclinic energy flux appears, which is caused by reflections of M₂ internal tides at supercritical topographies, and resonance of M₂ internal tides happens along 19.5° and 21.5°N due to the heights and separation distance of the double ridges. The total energy conversion in the LS is about 14.20 GW.
- internal tide /
- numerical simulation /
- Luzon Strait

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参考文献(36)

Alford M H, MacKinnon J A, Nash J D, et al. 2011. Energy flux and dissipation in Luzon Strait: two tales of two ridges. Journal of Physical Oceanography, 41(11): 2211-2222

Buijsman M C, Kanarska Y, McWilliams J C. 2010a. On the generation and evolution of nonlinear internal waves in the South China Sea. Journal of Geophysical Research, 115: C02012

Buijsman M C, McWilliams J C, Jackson C R. 2010b. East-west asymmetry in nonlinear internal waves from Luzon Strait. Journal of Geophysical Research, 115: C10057

Caruso M J, Gawarkiewicz G G, Beardsley R C. 2006. Interannual variability of the Kuroshio intrusion in the South China Sea. Journal of Oceanography, 62(4): 559-575

Chavanne C, Flament P, Carter M, et al. 2010. The surface expression of semidiurnal internal tides near a strong source at Hawaii. Part I: observations and numerical predictions. Journal of Physical Oceanography, 40(6): 1155-1179

Chao S Y, Ko D S, Lien R C, et al. 2007. Assessing the west ridge of Luzon Strait as an internal wave mediator. Journal of Oceanography, 63(6): 897-911

Chen Gengxin, Gan Jianping, Xie Qiang, et al. 2012. Eddy heat and salt transports in the South China Sea and their seasonal modulations. Journal of Geophysical Research, 117: C05021

Chen Gengxin, Hu Po, Hou Yijun, et al. 2011. Intrusion of the Kuroshio into the South China Sea, in September 2008. Journal of Oceanography, 67(4): 439-448

Chu P C, Li Rongfeng. 2000. South China Sea isopycnal-surface circulation. Journal of Physical Oceanography, 30(9): 2419-2438

Chu Xiaoqing, Xue Huijie, Qi Yiquan, et al. 2014. An exceptional anticyclonic eddy in the South China Sea in 2010. Journal of Geophysical Research, 119(2): 881-897

Du Tao, Tseng Y H, Yan Xiaohai. 2008. Impacts of tidal currents and Kuroshio intrusion on the generation of nonlinear internal waves in Luzon Strait. Journal of Geophysical Research, 113: C08015

Duda T F, Lynch J F, Irish J D, et al. 2004. Internal tide and nonlinear internal wave behavior at the continental slope in the northern South China Sea. IEEE Journal of Oceanic Engineering, 29(4): 1105-1130

Eich M L, Merrifield M A, Alford M H. 2004. Structure and variability of semidiurnal internal tides in Mamala Bay, Hawaii. Journal of Geophysical Research, 109: C05010

Gerkema, T, Lam F P A, Maas L R M. 2004. Internal tides in the Bay of Biscay: Conversion rates and seasonal effects. Deep-Sea Research Part II: Topical Studies in Oceanography, 51(25-26): 2995-3008

Holloway P E, Merrifield M A. 1999. Internal tide generation by seamounts, ridges, and islands. Journal of Geophysical Research, 104(C11): 25937-25951

Hu Jianyu, Kawamura H, Hong Huasheng, et al. 2000. A review on the currents in the South China Sea: seasonal circulation, South China Sea warm current and Kuroshio intrusion. Journal of Oceanography, 56(6): 607-624

Huan Lee I, Wang Yuhuai, Yang Y, et al. 2012. Temporal variability of internal tides in the northeast South China Sea. Journal of Geophysical Research, 117: C02013

Jan S, Chern C S, Wang J, et al. 2012. Generation and propagation of baroclinic tides modified by the Kuroshio in the Luzon Strait. Journal of Geophysical Research, 117: C02019

Jan S, Lien R C, Ting Chihua. 2008. Numerical study of baroclinic tides in Luzon Strait. Journal of Oceanography, 64(5): 789-802

Kämpf J. 2009. Long Waves in A Channel: Ocean Modeling for Beginners: Using Open-Source Software. Berlin: Springer

Kang S K, Foreman M G G, Crawford W R, et al. 2000. Numerical modeling of internal tide generation along the Hawaiian Ridge. Journal of Physical Oceanography, 30(5): 1083-1098

Li Qiang. 2014. Numerical assessment of factors affecting nonlinear internal waves in the South China Sea. Progress in Oceanography, 121: 24-43

Miao Chunbao, Chen Haibo, Lü Xianqing. 2011. An isopycnic-coordinate internal tide model and its application to the South China Sea. Chinese Journal of Oceanology and Limnology, 29(6): 1339-1356

Munk W. 1997. Once again: once again—tidal friction. Progress in Oceanography, 40(1-4): 7-35

Munk W, Wunsch C. 1998. Abyssal recipes II: energetics of tidal and wind mixing. Deep-Sea Research Part I: Oceanographic Research Papers, 45(12): 1977-2010

Niwa Y, Hibiya T. 2004. Three-dimensional numerical simulation of M2 internal tides in the East China Sea. Journal of Geophysical Research: Oceans (1978-2012), 109(C4)

Ray R D, Mitchum G T. 1996. Surface manifestation of internal tides generated near Hawaii. Geophysical Research Letters, 23(16): 2101-2104

Ray R D, Mitchum G T. 1997. Surface manifestation of internal tides in the deep ocean: Observations from altimetry and island gauges. Progress in Oceanography, 40(1-4): 135-162

Rudnick D L, Boyd T J, Brainard R E, et al. 2003. From tides to mixing along the Hawaiian Ridge. Science, 301(5631): 355-357

Simmons H L, Hallberg R W, Arbic B K. 2004. Internal wave generation in a global baroclinic tide model. Deep-Sea Research Part II: Topical Studies in Oceanography, 51(25-26): 3043-3068

Wang Dongping. 2012. Diurnal modulation of semidiurnal internal tides in Luzon Strait. Ocean Modelling, 59-60: 1-10

Wu Lidan, Miao Chunbao, Zhao Wei. 2013. Patterns of K1 and M2 internal tides and their seasonal variations in the northern South China Sea. Journal of Oceanography, 69(4): 481-494

Xu Zhenhua, Yin Baoshu, Hou Yijun. 2011. Multimodal structure of the internal tides on the continental shelf of the northwestern South China Sea. Estuarine, Coastal and Shelf Science, 95(1): 178-185

Xu Zhenhua, Yin Baoshu, Hou Yijun, et al. 2013. Variability of internal tides and nearinertial waves on the continental slope of the northwestern South China Sea. Journal of Geophysical Research: Oceans, 118(1): 197-211

Xu Zhenhua, Yin Baoshu, Hou Yijun, et al. 2014. Seasonal variability and north-south asymmetry of internal tides in the deep basin west of the Luzon Strait. Journal of Marine Systems, 134: 101-112

Zhao Zhongxiang. 2014. Internal tide radiation from the Luzon Strait. Journal of Geophysical Research: Oceans, 119(8): 5434-5448

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