Abstract
This final chapter of Part I of the text is a review of Earth's structure, and in particular Earth's seismic structure (variations in the elastic properties and density within the planet). The chapter starts with a listing of the global model PREM and progresses downward from Earth's surface to core. Patterns in crustal properties and thickness and uppermost-mantle structures are reviewed first. Next a review is presented of the upper mantle down through the transition zone (above about 700 km), including global averages and a focus on regions with subducting slabs and mantle plumes. Lower mantle structure, and in particular structure of the mantle just overlying the core is reviewed next. Finally, models of the outer and inner core are described. Connections with the propagation of seismic waves used to image these features are made throughout the chapter.
Published Version
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