地核地函边界处(简称核函边界)是地球深部最为重要的物理性质、化学性质不连续面之一,它分隔了固态、对流的下地函与液态组成的外地核。在这门研讨课程中,各指导者将会从整合地震学、矿物物理以及地球动力学等面向,检视我们现今对核函边界区域的认识,同时在课堂中,指导者也会介绍各种应用于认识核函边界特性的最新方法,并讨论相关的文献。课程主题包括有:核函边界的探查与其形貌,D”的非均向性,以及核函边界上的震波波速异常(例如:极低速带)、温度、化学反应、相关系以及矿物建造;这些研讨内容的整合,终将定位出核函边界在地函动力以及地核动力两者中扮演的重要角色。
The Core Mantle Boundary (CMB) represents one of the most important physical and chemical discontinuities of the deep Earth as it separates the solid state, convective lower mantle from the liquid outer core. In this seminar course, the instructors will examine our current understanding of the CMB region from integrated seismological, mineral physics and geodynamical perspectives. Instructors will also introduce state-of-the-art methodologies that are employed to characterize the CMB region and relevant papers will be discussed in class. Topics will include CMB detection and topography, D'' anisotropy, seismic velocity anomalies (e.g., ultra-low velocity zones), temperature, chemical reactions, phase relations, and mineral fabrications at the core-mantle boundary. These results will be integrated to address the CMB's fundamental role in both mantle and core dynamics.