Shear Inelasticity Measurements in Mantle Minerals

地幔矿物的剪切非弹性测量

• 批准号: 9526988
• 负责人: Ivan Getting
• 金额: $ 14万
• 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: 1996
• 资助国家: 美国
• 起止时间: 1996-07-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9526988&HistoricalAwards=false
• 关键词: Shear; Inelasticity; Measurements; Mantle; Minerals

9526988 Getting The PI proposes experiments to measure the complex torsional modulus of olivine and periclase at high temperatures, small strain amplitudes, and seismic frequencies by subjecting a cylindrical sample to harmonic torsion. The ability to measure strain wave attenuation over large frequency and temperature ranges is important for the direct interpretation of attenuation of seismic waves in the earth for the interpretation of lateral seismic velocity variations, and to illuminate the fundamental relations between stress, microdefects and strain wave propagation. The systematic study of inelasticity in earth materials is a vital complement to the study of the elastic properties of these materials. ***

9526988获得等电点提出了通过使圆柱形样品承受简谐扭转来测量高温、小应变幅度和地震频率下橄榄石和方镁石的复杂扭转模数的实验。在大的频率和温度范围内测量应变波衰减的能力对于直接解释地震波在地球中的衰减、解释横向地震速度变化以及阐明应力、微缺陷和应变波传播之间的基本关系是重要的。对地球材料非弹性的系统研究是对这些材料弹性性质研究的重要补充。***