Time Variations of Terrestrial Gravity and the Earth's Core

96-28358 Crossley，PI建议确定重力观测可以在多大程度上提供以下重要和直接的确定：1)内/外核边界的密度跳跃，2)液核的重力稳定性剖面，3)核/地幔边界的椭圆度。确定地球表面地心重力信号与地球液核动力学之间的关系将有助于我们理解地球的地磁发电机以及与地核和地幔对流有关的问题。***

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. ***