Wobble I
"Wobble I", written between 1969-1970, contains handwritten notes and calculations, which are contained within a red hard-cover notebook. In addition to this work, there is also a "Wobble II" which is likewise contained in this digital archive. Note: The notebook is not page numbered so the numbers here are counted from the start. This notebook deals with the effects earthquakes have on a self-gravitating Earth. Dahlen first finds a method of computing displacements at any point on the Earth based on a dislocation at another point. He then grapples with the problem of the change in the moment of inertia due to the deformation of the Earth. This, he said, would help in determining the effect earthquakes have on the Chandler Wobble -- known more commonly as the Earth's precession. Finally, he reaches the problem that his analysis is only valid for the mantle, as his force analysis doesn't include the effects of a liquid core, which he notes is important. This collection can be found at: Guyot Hall, Princeton, NJ, 08544. Back to Main Page
	Pages	Sheet Numbers
Dislocation Theory for a Self-Gravitating Earth Model	4–28	N/A
[Testing out Theory with Hypothetical Unit Force]	29–39	N/A
[Computing Inertia Tensor due to deformation of Earth -- Chandler Wobble]	41-56	N/A
Summary of what needs to be computed for changes in products of inertia	57	N/A
Computation Procedure [for Inertia tensor]	58–59	N/A
[Cleaning-up notation for point dislocation is SNREI Earth Model]	60–64	N/A
The problem of the Core	65–75	N/A