Assessments and Comparisons of Seismic Earth Structures and Mantle Flow Models Using Two-Point Moment Functions

9316032约旦 本研究的目的是计算地幔流的性质，并利用全球地震资料进行检验。 将进行2-D和3-D数值实验，以将与所观察到的径向相关函数以及其他诊断一致的流动模型的类型编入目录。 重要的参数包括粘度曲线和内部加热量。 地震建模将针对两个主题。 1)确定3-D地幔结构的数据集将得到改善的多模式估计技术的发展，提取参数，描述自由振荡多重分裂非球面异质性。 2)地震学逆问题将重新制定的两点相关函数，一个随机的方法，其中的角积分被取代的平均值之间的产品对数据点。 ***

9316032 Jordan This research is to calculate properties of mantle flow that can be tested by means of global seismic data. 2-D and 3-D numerical experiments will be done to catalog the types of flow models consistent with the observed radial correlation function, as well as other diagnostics. Important parameters include the viscosity profile and the amount of internal heating. Seismic modeling will be directed at two topics. 1) Data sets for determining 3-D mantle structure will be improved by the development of multi-mode estimation techniques for extracting the parameters that describe free-oscillation multiplets split by aspherical heterogeneity. 2) The seismological inverse problem will be reformulated in terms of a two-point correlation function, a stochastic approach where the angular integrations are replaced by averages over products between pairs of data points. ***