The investigation of internal solitary waves over a continental shelf-slope

Qian MA; Chunxin YUAN; Xiaopei LIN; Xue'en CHEN

doi:10.1007/s00343-019-9123-8

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The investigation of internal solitary waves over a continental shelf-slope

Physics | Updated：2023-05-19

- The investigation of internal solitary waves over a continental shelf-slope
- Journal of Oceanology and Limnology Vol. 38, Issue 3, Pages: 695-706(2020)
- Affiliations：
  
  1.Physical Oceanography Laboratory/Institute for Advanced Ocean Study, Ocean University of China and Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China
  2.School of Mathematical Sciences, Ocean University of China, Qingdao 266100, China
- Author bio：
  
  CHEN Xue'en, xchen@ouc.edu.cn
- Funds：
- DOI：10.1007/s00343-019-9123-8
  CLC：
- Received：18 May 2019，
  
  Accepted：19 July 2019，
  
  Online First：23 September 2019，
  
  Published：2020-05
- Accepted：
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Qian MA, Chunxin YUAN, Xiaopei LIN, et al. The investigation of internal solitary waves over a continental shelf-slope[J]. Journal of Oceanology and Limnology, 2020, 38(3): 695-706.
DOI：

Qian MA, Chunxin YUAN, Xiaopei LIN, et al. The investigation of internal solitary waves over a continental shelf-slope[J]. Journal of Oceanology and Limnology, 2020, 38(3): 695-706. DOI： 10.1007/s00343-019-9123-8.

摘要

Abstract

Internal solitary waves (ISWs) always happen in marginal seas

where stable stratification exists. ISWs may carry large energy when they propagate and affect marine engineering constructions such as marine drilling platforms. Previous studies

including a large number of mooring observations and laboratory experiments

show the speed of ISWs will change when they pass by shelf slopes. Korteweg-de Vries (KdV) theory explain this phenomenon. In the paper

we use a laboratory experiment and a numerical model experiment to verify this theory. In the laboratory experiment

we injected two layers of water of different densities in a tank to simulate marine stratification and make ISWs. We use a CCD camera to record the whole process. The camera can take 16 photos per second. In the numerical experiment

we input the same original conditions as the laboratory one. The results of 18 different original conditions show the dimensionless factor δ plays a key role in deciding the amplitudes and shapes of ISWs. The main conclusion also contains that small-amplitude waves match well with KdV theory while mKdV is better for largeamplitude waves. Whether the laboratory experiment or numerical experiment shows results with a high agreement. In future studies

we may use a numerical model with higher resolution to get analysis about phase speed and energy of ISWs.

关键词

Keywords

references

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