LECTURE 9 OUTLINE - EARTH'S STRUCTURE (updated 11/10/97)
Instructor: Professor Barbara Romanowicz
Director of Seismological Laboratory
Office Hours: Thursday 2-4 pm , upon appointment only
475 Mc Cone Hall
EARTH'S STRUCTURE
References:
Bolt, Earthquakes, Chapter 4
Fowler, The Solid Earth, Chapters 4, 7.
1. Ancient Beliefs
2. Historical Progression before Seismology
Newton and density/composition
Ocean Tides
First Simple Models
3. Dimensions
Shape, mass, radius, mean density of rocks
4. The contribution of Seismology
Classification of waves, travel time curves
Average models
Discovery of the liquid Core
Discovery of the solid Inner Core
Main Structural Units
5. Fine structure of the interior
phase changes, viscosity
Upper mantle, lower mantle, D"
lithosphere, asthenosphere
Direct and Inverse Problems
Tomography and 3D images
Mantle Convection
The earth's crust