| 利用曲线网格有限差分方法研究三维倾斜断层的破裂动力学 |
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| 引用本文： | 朱德瀚,张伟,祝贺君,罗扬,陈晓非.利用曲线网格有限差分方法研究三维倾斜断层的破裂动力学[J].地震学报,2010,32(4):401-411. |
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| 作者姓名： | 朱德瀚 张伟 祝贺君 罗扬 陈晓非 |
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| 作者单位： | 1）中国北京100871北京大学地球与空间科学学院
2）中国合肥230026中国科学技术大学地球和空间科学学院，蒙城国家野外地球物理观测研究站
3 ）Graduate School of Oceanography, University of Rhode Is |
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| 基金项目： | 地震行业科研专项基金，国家自然科学基金 |
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| 摘 要： | 利用曲线网格有限差分方法,研究了三维倾斜断层的破裂传播过程.基于断层面生成贴体曲线网格,并通过坐标变换将含曲线网格的物理空间转换到含均匀直角网格的计算空间,实现了有限差分方法对复杂界面的处理.通过模拟地震断层的自相似破裂和自发破裂,并与已有发表的结果对比,发现拟合程度较高,验证了本方法的有效性和精确性.重点研究了不同倾角的倾斜断层破裂,最后展望了今后用本方法对非均匀介质中和任意起伏地表下的任意非平面断层破裂动力学的进一步研究.
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| 关 键 词： | 曲线网格 有限差分 破裂动力学 倾斜断层 |
3-D rupture dynamics of dipping faults with curvilinear-grid finite difference method |
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| Zhu Dehan,Zhang Wei,Zhu Hejun,Luo Yang,Chen Xiaofei.3-D rupture dynamics of dipping faults with curvilinear-grid finite difference method[J].Acta Seismologica Sinica,2010,32(4):401-411. |
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| Authors: | Zhu Dehan Zhang Wei Zhu Hejun Luo Yang Chen Xiaofei |
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| Affiliation: | 1) School of Earth Space Sciences, Peking University, Beijing 100871, China2) School of Earth Space Sciences, Mengcheng State Geophysical Observatory, University of Science Technology of China, Hefei 230026, China3) Graduate School of Oceanography, Un |
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| Abstract: | We use curvilinear-grid finite difference method (FDM) to study 3-D rupture dynamics of dipping faults.By generating boundary-conforming curvilinear grids based on fault plane and using coordinate transformation,physical space with curvilinear grids can be mapped to computational space with uniform orthogonal grids,so FDM can be implemented on complex surfaces.In order to verify the validity and accuracy of this method,we model self-similar and spontaneous rupture of earthquake faults and compare our result... |
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| Keywords: | curvilinear grid finite difference method rupture dynamic dipping fault |
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