Constraints on Subduction Zone and Mantle Structures from Seismic Traveltimes and Waveforms

地震走时和波形对俯冲带和地幔结构的约束

• 批准号: 9317300
• 负责人: Hua-Wei Zhou
• 金额: $ 16.73万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-04-01 至 1998-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9317300&HistoricalAwards=false
• 关键词: Constraints; Subduction; Zone; Mantle; Structures

9317300 Zhou This research will continue work to constrain seismic structures around subduction zones and the mantle. The major objectives are: (1) to gain new insight into the nature of subducted slabs through a joint analysis of traveltime inversions and waveform modeling; and (2) to map the mantle structure by conducting, for the first time, whole mantle inversions with full 3D ray tracing. The results will address the depth of penetration of the subducted slab, the resolving power of seismic waveforms, the dominant characteristics of mantle heterogeneities as a function of depth, and the importance of inclusion of 3D ray tracing in tomographic inversions. ***

9317300周这项研究将继续工作，以约束俯冲带和地幔周围的地震构造。主要目标是：(1)通过旅行时反演和波形模拟的联合分析，对俯冲板块的性质有新的认识；(2)通过首次进行全三维射线追踪的全地幔反演，绘制地幔结构图。这些结果将涉及俯冲板块的穿透深度、地震波形的分辨率、作为深度函数的地幔非均质性的主要特征，以及三维射线追踪在层析反演中的重要性。***