Resolving Anisotropy and Heterogeneity with P Waveforms

用 P 波形解决各向异性和异质性

• 批准号: 9902422
• 负责人: T. Guy Masters
• 金额: $ 15.03万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-15 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9902422&HistoricalAwards=false
• 关键词: Resolving; Anisotropy; Heterogeneity; Waveforms

9902422MastersThis project is to study seismic anisotropy, which can offer important clues about the crustal evolution and the dynamics of the mantle. The project proposes a new way of simultaneously using three-component single station and array data of broad-band P wave arrivals that may be less sensitive to tradeoffs between anisotropy and isotropic heterogeneity or to tradeoffs between spatial extent versus strength of anisotropy. This method provides a new tool to image the anisotropic properties of the near-receiver upper mantle and crust. This study will provide both a more realistic view of the behavior of P-waves, characterizing the deviation of longitudinal motion from the source-receiver great circle and providing a different method of characterizing anisotropy.

9902422Masters这个项目是研究地震各向异性，可以为地壳演化和地幔动力学提供重要线索。 该项目提出了一种同时使用宽带 P 波到达的三分量单站和阵列数据的新方法，该方法可能对各向异性和各向同性异质性之间的权衡或空间范围与各向异性强度之间的权衡不太敏感。 该方法提供了一种新工具来成像近接收器上地幔和地壳的各向异性特性。 这项研究将提供对纵波行为的更真实的看法，描述纵向运动与源接收器大圆的偏差，并提供一种不同的描述各向异性的方法。