Abstract
A series of experiments are designed to propose a new method to study the characteristics of convex mode-2 internal solitary waves (ISWs) in optical remote sensing images using a laboratory-based optical remote sensing simulation platform. The corresponding wave parameters of large-amplitude convex mode-2 ISWs under smooth surfaces are investigated along with the optical remote sensing characteristic parameters. The mode-2 ISWs in the experimentally obtained optical remote sensing image are produced by their overall modulation effect on the water surface, and the extreme points of the gray value of the profile curve of bright-dark stripes appear at the same location as the real optical remote sensing image. The present data extend to a larger range than previous studies, and for the characteristics of large amplitude convex mode-2 ISWs, the experimental results show a second-order dependence of wavelength on amplitude. There is a close relationship between optical remote sensing characteristic parameters and wave parameters of mode-2 ISWs, in which there is a positive linear relationship between the bright-dark spacing and wavelength and a nonlinear relationship with the amplitude, especially when the amplitude is very large, there is a significant increase in bright-dark spacing.
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Foundation item: The National Natural Science Foundation of China under contract No. 61871353.
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Li, Z., Zhang, M., Liang, K. et al. Optical remote sensing image characteristics of large amplitude convex mode-2 internal solitary waves: an experimental study. Acta Oceanol. Sin. 42, 16–23 (2023). https://doi.org/10.1007/s13131-022-2145-7
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DOI: https://doi.org/10.1007/s13131-022-2145-7