Finite tectonic strain and its error, as estimated from elliptical objects with a class of initial preferred orientations
Finite tectonic strain and its error, as estimated from elliptical objects with a class of initial preferred orientations
复制标题
有限构造应变及其误差，根据具有一类初始首选方向的椭圆形物体估计
DOI：
10.1016/j.jsg.2005.06.007
复制
发表时间：
2005
影响因子：
3.1
通讯作者：
A. Yamaji
中科院分区：
文献类型：
--
作者：
A. Yamaji
本文提出了一种新的反演方法，利用椭圆体的矩阵来估计均匀变形后椭圆体的应变。该方法将应变分析的适用范围扩展到预应变组构具有各向异性的情况。具体而言，在Elliott图的原点处具有平均值的二元正态分布预期作为初始结构的近似。该方法的目的是方便的误差估计的最佳应变椭圆。蒙特卡罗试验表明，最优解是精确的，数值稳定。此外，由本方法评估的置信区域也是准确的，只要初始纵横比的变化大于平均值与原点的偏差的0.55倍。
A new inverse method is proposed to estimate strain from elliptical objects that have suffered uniform deformation with their matrix. The present method extends the applicability of strain analysis to the cases where pre-strain fabric has a class of anisotropy. Specifically, a bivariate normal distribution with the mean at the origin of the Elliott plot is expected as an approximation for the initial fabric. The method is designed to facilitate error estimation for the optimal strain ellipse. Monte Carlo tests showed that the optimal solution is accurate and numerically stable. In addition, a confidence region evaluated by the present method is also accurate, provided that the variation of initial aspect ratios was more than ∼5 times larger than the deviation of the mean from the origin.
改进织物数据的图形表示，显示颗粒纵横比对其方向的影响
DOI：
--
发表时间：
2005
期刊：
Jour. Sedimentary Research 75
影响因子：
--
作者：
Yamaji;A.;F.Masuda
通讯作者：
F.Masuda