Last week we talked about glaciers, a basic staple of any geology education. That means it’s only fair to talk about a geophysics staple this week. We can measure gravity at different locations and use it to help figure out what’s under our feet. That and another great Fun Paper this week!
- All geophysical methods are based on measuring some kind of physical property difference.
- Gravity is sensitive to the density of the material below the measurement.
- “Big G”
- gal (unit)
- Density for any rock varies widely.
- Gravity from impact structures
- Examples of the more common corrections
- Eötvös effect
- John’s explanation of Coriolis Force and Toilets
- Bouguer Anomaly
- FORTRAN Talwani Example
- Original Talwani Paper
Fun Paper Friday
- Alarcón, Héctor, et al. “Self-Amplification of Solid Friction in Interleaved Assemblies.” Physical Review Letters 116.1 (2016): 015502.
- Semis pulling on phone books
Shannon Dulin – @ShannonDulin