Review on the Study of Numerical Simulation of Crustal Deformation Dynamic Models in Sichuan-Yunnan Region

被引：0
作者：
Xu, Caijun [1 ,2 ,3 ]
Wang, Yufei [1 ]
He, Kefeng [1 ]
机构：
[1] School of Geodesy and Geomatics, Wuhan University, Wuhan
[2] Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan University, Wuhan
[3] Key Laboratory of Geophysical Geodesy, Ministry of Natural Resources, Wuhan University, Wuhan
来源：
Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University | 2024年 / 49卷 / 11期
关键词：
dynamic model; gravity diffusion; mantle convection; middle-lower crust flow; numerical simulation; Sichuan-Yunnan region;
D O I：
10.13203/j.whugis20240295
中图分类号：
学科分类号：
摘要：
Sichuan-Yunnan region is located in the southeast margin of the Tibetan Plateau, and its crustal deformation characteristics have been one of the hot issues in the research, but the driving mechanism of the dynamic model of the deformation is still controversial. First,the theoretical results and research progress of the structural deformation model in Sichuan-Yunnan region based on the finite element numerical simulation method in recent years are reviewed, aiming to explore the influence of four tectonic models: block extrusion, middle-lower crust flow, gravity diffusion and mantle convection. The block extrusion model focuses on the crustal deformation controlled by the activity of the block boundary faults, but there are controversies in the selection of the secondary faults. The middle-lower crust flow model holds that there are weak layers with low viscosity and flow ability in deep crust, but its scale and size are still unclear. The gravity diffusion model plays an obvious role in the high altitude difference of Sichuan-Yunnan region, but it is uncertain whether the middle-lower crust flow are involved in this process. The influence of the drag force exerted by mantle convection on the bottom boundary of the lithosphere on the crustal movement has been gradually paid attention to. Second, the existing problems and challenges of finite element numerical simulation methods of dynamic models in Sichuan-Yunnan region are discussed. It is necessary to comprehensively consider all 4 types of dynamic models and reasonably construct finite element geometric and physical models in order to clarify the contribution of various external and internal driving forces to crustal deformation. Finally, the development direction of numerical simulation of dynamic model in Sichuan-Yunnan region is pointed out. Considering the coupling of multiple physical fields and the comprehensive application of multi-disciplinary data, the improvment of algorithm efficiency and stability on the basis of high performance computing technology may be the future trend of dynamic finite element numerical simulation research. © 2024 Editorial Department of Geomatics and Information Science of Wuhan University. All rights reserved.
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页码：2003 / 2015
页数：12
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共 75 条
  • [51] Zhu Shoubiao, Shi Yaolin, Genetic Algorithm-Finite Element Inversion of Drag Forces Exerted by the Lower Crust on the Upper Crust in the Sichuan-Yunnan Area[J], Chinese Journal of Geophysics, 47, 2, pp. 232-239, (2004)
  • [52] Wang Hui, Cao Jianling, Zhang Huai, Et al., Numerical Simulation of the Influence of Lower-Crustal Flow on the Deformation of the Sichuan-Yunnan Region, Acta Seismologica Sinica, 29, 6, pp. 581-591, (2007)
  • [53] Yang Hui, Teng Jiwen, Pi Jiaolong, Numerical Simulation of the Geodynamical Condition About the Channel Flow Model in Tibetan Plateau, Chinese Journal of Geophysics, 56, 8, pp. 2625-2635, (2013)
  • [54] Li Y J, Chen L W, Tan P, Et al., Lower Crustal Flow and Its Relation to the Surface Deformation and Stress Distribution in Western Sichuan Region, China, Journal of Earth Science, 25, 4, pp. 630-637, (2014)
  • [55] Yin Di, Dong Peiyu, Shi Yaolin, Numerical Simulation of Surface Deformation in Sichuan-Yunnan Region Considering the Drag Forces Underneath the Lower Crust, Journal of University of Chinese Academy of Sciences, 38, 1, pp. 1-8, (2021)
  • [56] Yin L, Luo G., Does Middle-Lower Crustal Flow Exist in the Eastern Tibetan Plateau? Insights from Finite-Element Modeling and Geodetic Observations [J], Tectonophysics, 832, (2022)
  • [57] Jackson J., Strength of the Continental Lithosphere: Time to Abandon the Jelly Sandwich?[J], GSA Today, 12, 9, (2002)
  • [58] Sun Y D, Leng W, Liu-Zeng J., A Geodynamic Deformation Model of the Chuandian Region of Sou - theastern Tibet,with Constraints from GPS Data, Faults and Low-Velocity Zones, ESS Open Archive, (2020)
  • [59] Bai D H, Unsworth M J, Meju M A, Et al., Crustal Deformation of the Eastern Tibetan Plateau Revealed by Magnetotelluric Imaging[J], Nature Geo-science, 3, 5, pp. 358-362, (2010)
  • [60] Zhang Dongning, Xu Zhonghuai, Three Dimensional Elasto-Visco Numerical Simulation of Qinghai-Xizang Plateau’s Recent Tectonic Stress Field and It’s Motion [J], Earthquake Research in China, 10, 2, pp. 136-143, (1994)
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