CSEDI: Collaborative Research: Fine Structure of the Lower Mantle

ppi提出了一个整合地震学和地球动力学工具和概念的合作项目，以阐明下地幔和“D”区的动力学和精细结构。地震数据将用于确定明显的下涌和上涌的细节，浅层地球结构的污染将通过直接地震模拟和动态模型预测之间的相互作用来阐明。动态模型将用于构建2D和3D速度模型，这些模型将用于构建合成模型，并将其预测与适当的数据集进行比较，以进行验证和反馈，以产生改进的模型。在第一年，将使用最新的层析模型来构建二维截面和相应的合成材料，并使用全动态模型来研究热区的热化学边界，在热区，核心材料的部分熔化或夹带可能在一两年内发挥作用。＊＊＊

9629279 Gurnis The PIs propose a collaborative project integrating seismological and geodynamic tools and concepts to elucidate the dynamics and fine structure of the lower mantle and "D" region. Seismic data will be used to determine details of apparent down- and up-welling, and contamination from shallow earth structures will be elucidated by the interplay between direct seismic modeling and prediction made from dynamic models. Dynamic models will be used to construct 2D and 3D velocity models which in turn will be used to construct synthetics, and their predictions will be compared with appropriate data sets for verification and feed-back to produce improved models. Recent tomographic models will be used to construct 2D cross-sections and corresponding synthetics in year one, and fully dynamic models will be used to study thermochemical boundaries in hot regions where partial melting or entrainment of core material could play a role in a year or two. ***