# Numerical Modeling of Scholte Wave in Acoustic-Elastic Coupled TTI Anisotropic Media
## 5 Conclusions  
We derive the 3D TTI acoustic-elastic coupled equations for controlling the wavefield propagation without considering complex boundary conditions. Through comparison with spectral element method, the effectiveness of our algorithm is proven, and it is suitable for the 3D space. The cost of this method is that compared with the acoustic equation, more parameters need to be set in the water layer, so the storage space and calculation time will be increased to a certain extent. Comparing curves from multiple sets of Thomsen parameters and polar angle \(\theta\), we conclude that the velocity of the Scholte wave is positively correlated with \(\varepsilon\) and negatively correlated with \(\delta\), and the curve of the arrival time of the Scholte wave is close to sinusoidal with respect to changes in the polar angle \(\theta\). The results of the 3D model indicate that the velocity of the Scholte wave in the strike direction is positively related to the polar angle. The energy of the Scholte wave is negatively correlated with the distance from the source to the fluid-solid interface. This technology holds great potential in advancing marine seismic data imaging and Scholte wave research, especially in the exploration of renewable energy, providing a more cost-effective and accurate tool for the industry.  
Conceptualization, Y.C. and D.W.; methodology, Y.C.; software, Y.C.; validation, Y.C. and D.W.; formal analysis, D.W.; investigation, Y.C.; resources, D.W.; data curation, D.W.; writing--original draft preparation, Y.C.; writing--review and editing, Y.C. and D.W.; visualization, Y.C.; supervision, D.W.; project administration, D.W.; funding acquisition, D.W. All authors have read and agreed to the published version of the manuscript.  
Figure 14: Seismograms from the Marmousi2 model. The water layer is 0.75 km thick. (**a**): The source is located at \(\mathrm{x}=4.62\) km and \(\mathrm{z}=0.7375\) km; (**b**): The source is located at \(\mathrm{x}=4.62\) km and \(\mathrm{z}=0.725\) km; (**c**): The source is located at \(\mathrm{x}=4.62\) km and \(\mathrm{z}=0.7\) km.  
**Funding:** This research was supported in part by the National Natural Science Foundation of China (No. 42074151, No. 41374108), and Major Projects of the National Science and Technology of China (Grant No. 2016 ZX05026-002-003).  
**Data Availability Statement:** The original contributions presented in the study are included in the article, further inquiries can be directed to the corresponding author.  
**Acknowledgments:** This research was supported in part by the National Natural Science Foundation of China (No. 42074151, No. 41374108), and Major Projects of the National Science and Technology of China (Grant No. 2016 ZX05026-002-003). Thanks to [PERSON] for helping us revise our paper and providing some suggestions during the initial draft writing process. Thanks to [PERSON] for providing us with a high-performance computer platform.  
**Conflicts of Interest:** We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, and there is no professional or other personal interest of any nature or kind in any product, service, and/or company.