Seismogenic Zone
By Earthquake Hazards Program
2021 (approx.)
![Diagram showing a blob shape with a D and an arrow pointing right and a labelled reupture. The height is labelled "W" and the length is "L." The top line is labelled "Surface" and the bottom line is labelled "Base of seismogenic zone"](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/seismogenic%20zone.gif?itok=Fo1irvOC)
Detailed Description
Moment = ? A D
? = shear modulus = 32 GPa in crust, 75 GPa in mantle
A = LW = area
D = average displacement during rupture