Normal Mode Studies of Even and Odd Degree Elastic and Anelastic Structure of the Mantle and Core

地幔和地核偶数和奇数弹性和非弹性结构的正态模态研究

• 批准号: 9509836
• 负责人: Michael Ritzwoller
• 金额: $ 11万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-15 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9509836&HistoricalAwards=false
• 关键词: Normal; Mode; Studies; Even; Odd

9509836 RITZWOLLER This research is to use the normal modes of the earth at low frequency (less than 12 mHZ) and long-wavelength (l less than 21) to study the earth's mantle and core. Data quantity has been increased by an order of magnitude over previous studies, and recent large deep events present normal modes for analysis that have never before been clearly observed. Concerning the mantle, elastic constraints will be particularly useful for estimating structures in the transition zone and the outer lower mantle where current mantle models differ most appreciably and in providing better information about the variations of Vs/Vp. With respect to the core, focus will be on modes sensitive to the anisotropic inner core and the deep outer core. ***

小行星9509836 本研究利用地球低频（小于12 mHZ）和长波（l小于21）的简正波来研究地幔和地核。 数据量比以前的研究增加了一个数量级，最近的大型深部事件提出了以前从未被清楚观察到的正常模式进行分析。 关于地幔，弹性约束将是特别有用的估计结构在过渡区和外下地幔，目前的地幔模型最明显的不同，并在提供更好的信息的变化Vs/Vp。 关于核，重点将放在对各向异性内核和深外核敏感的模式上。 ***