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Seismic structure and rheology of the crust under China's mainland: The crust and upper mantle in China’s mainland were relatively densely probed with wide-angle seismic profilin...; Zhongjie ZhangYangfan DengLin ChenJing WuJiwen TengGiuliano Panza

贴体网格各向异性对坐标变换法求解起伏地表下地震初至波走时的影响被引量：19: 2012年; 笛卡尔坐标系中的经典程函方程在静校正、叠前偏移、走时反演、地震定位、层析成像等很多地球物理工作中都有应用,然而用其计算起伏地表的地震波走时却比较困难.本文通过把曲线坐标系中的矩形网格映射到笛卡尔坐标系的贴体网格,推导出曲线坐标中的程函方程,而后,用Lax-Friedrichs快速扫描算法求解曲线坐标系的程函方程.研究表明本文方法能有效处理地表起伏的情况,得到准确稳定的计算结果.由于地表起伏,导致与之拟合的贴体网格在空间上的展布呈各向异性,且这种各向异性的强弱对坐标变换法求解地震初至波的走时具有重要影响.本文研究表明,随着贴体网格的各向异性增强,用坐标变换法求解地表起伏区域的走时计算误差增大,且计算效率降低,这在实际应用具有指导意义.; 兰海强张智徐涛白志明; 关键词：程函方程地震波走时起伏地表各向异性

Geophysical transect across the North China Craton: A perspective on the interaction between Tibetan eastward escape and Paci fic westward flow: The North China Craton(NCC) is composed of the Eastern and Western Blocks amalgamated along the Central Orogen...; Zhongjie ZhangGuowei ZhangYangfan DengM.SantoshJiwen Teng

Reverse time migration from irregular surface by flattening surface topography: Prestack reverse time migration(RTM)is a powerful tool to provide high resolution structure images of crust an...; Haiqiang LanZhongjie ZhangJingyi ChenYoushan Liu; 文献传递

Geophysical transect across the North China Craton: A perspective on the interaction between Tibetan eastward escape and Paci fic westward flow: The North China Craton(NCC) is composed of the Eastern and Western Blocks amalgamated along the Central Orogen...; Zhongjie ZhangGuowei ZhangYangfan DengM.SantoshJiwen Teng; 文献传递

曲线坐标系程函方程的求解方法研究: 笛卡尔坐标系中经典的程函方程在静校正、叠前偏移、走时反演、地震定位、层析成像等许多地球物理工作都有应用,然而用其计算起伏地表的地震波走时时却比较困难.我们通过把曲线坐标系中的矩形网格映射到笛卡尔坐标系的贴体网格推导出了曲...; 刘一峰兰海强; 关键词：程函方程起伏地表各向异性; 文献传递

三角网格谱元法地震波场数值模拟: 谱元法结合了有限元法的灵活性和谱方法的指数收敛性,高效且高精度,是近年来发展的一种重要的地震波场数值模拟方法.经典的谱元法采用四边形(六面体)网格,利用一维Gauss-Legendre-Lobatto(GLL)积分的张量...; 刘有山滕吉文徐涛刘少林司芗马学英; 关键词：显式有限元法

Calculating Ray Paths for First-Arrival Travel Times Using a Topography-Dependent Eikonal Equation Solver: Irregular surfaces cause a number of problems for seismic processing and interpretation. The problems lie in t...; Ting MaZhongjie Zhang

Comparative study of the free-surface boundary condition in two-dimensional finite-difference elastic wave field simulation: The finite-difference(FD) method is a powerful tool in seismic wave field modelling for understanding seismic ...; Haiqiang Lan and Zhongjie Zhang State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,People’s Republic of China; 关键词：ACCURACY; 文献传递

地震波走时场模拟的快速推进法和快速扫描法比较研究: 地震波走时信息在叠前偏移、叠前速度分析、地震层析成像、走时反演及地震定位等中部有重要应用.快速推进法因其理论完善、精确灵活,无条件稳定,近年来已在走时计算领域得到广泛应用.快速扫描法作为求解一阶非线性双曲型偏微分方程的高...; 兰海强张智徐涛白志明梁锴; 关键词：地震波走时有限差分程函方程; 文献传递

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