Time Variations of Terrestrial Gravity and the Earth's Core

地球重力和地心的时间变化

• 批准号: 9628358
• 负责人: David Crossley
• 金额: $ 5万
• 依托单位: Saint Louis University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-15 至 1999-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9628358&HistoricalAwards=false
• 关键词: Time; Variations; Terrestrial; Gravity; Earth

96-28358 Crossley The PI proposes to determine to what extent gravity observations could provide important and direct determinations of 1) the density jump at the inner core/outer core boundary (ICB), 2) the gravity stability profile of the liquid core and 3) the ellipticity of the core/mantle boundary (CMB). Determinations of the relationship between core gravity signals at the earth's surface and the dynamics of the liquid core of the earth should help our understanding of the earths geomagnetic dynamo and the related issues of convection in the earth's core and mantle. ***

96-28358 克罗斯利 PI建议确定重力观测在多大程度上可以提供以下重要和直接的确定：1）内核/外核边界（ICB）的密度跃变，2）液核的重力稳定性剖面，3）核/幔边界（CMB）的椭圆度。 确定地球表面的核重力信号与地球液核动力学之间的关系，将有助于我们了解地球的地磁发电机和有关的地球物理现象。 地球核心和地幔的对流问题。 ***