Resolving the Structure and Rotation of the Inner Core

解析内核的结构和旋转

• 批准号: 9706201
• 负责人: Xiaodong Song
• 金额: $ 16万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-15 至 1999-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9706201&HistoricalAwards=false
• 关键词: Resolving; Structure; Rotation; Inner; Core

9706201 Song This research involves the expansion of previous findings concerning the differential rotation of the earth's inner core. Waveform modeling and differential time measurements of core phases (PKP) have successfully led to new insights on both the P- wave anisotropy, structure and rotation of the inner core. The approach of using relative observations (waveforms, differential times) with a common source eliminates the concern about uncertainties in source origin time, excitation, mislocation, and velocity uncertainties in the crust and upper mantle under the source and receiver. More differential data will be assembled to invert the anisotropy/attenuation structure of the inner core in a frame of a spinning inner core. ***

9706201歌曲这项研究涉及以前关于地球内核差异旋转的发现的扩展。 核心相（PKP）的波形建模和差分时间测量成功地导致了对内核的P各向异性，结构和旋转的新见解。 使用相对观察（波形，差异时间）与共同来源的方法消除了对源原点时间，激发，误差和速度不确定性在源和接收器下的上地幔中的不确定性的关注。 将组装更多的差分数据，以在旋转内核的框架中颠倒内核的各向异性/衰减结构。 ***