Geology 101 - Lecture 22
Earthquakes (continued)
I. Earthquake effects
Great
interactive site
for finding out about earthquake effects in different parts of the
San Francisco Bay Area as you change various parameters. You can
even zoom into a particular neighborhood and see for example
what effects a magnitude 7 earthquake on the Hayward fault would have
1. Ground motion
2. Liquefaction
3. Landsliding
4. Ground rupture
5. Fire
6.
Tsunami
-
Click here
for a good link to practical advice on tsunamis and
earthquake preparedness in the Pacific Northwest
II. Earthquakes in the Pacific Northwest
What is the Cascadia subduction zone?
The January, 1700 Cascadia Subduction Zone earthquake and tsunami
In this site you will find all of the material covered in lecture on the
evidence for the earthquake and all associated figures
Giant Megathrust Earthquakes Short summary only.
Click on the review article
Seismology: Giant megathrust earthquakes to get the whole
slide show and associated text
III. Good and bad building practices in earthquake-prone regions
NOTE: THIS SECTION WILL BE CONSIDERABLY EXPANDED
- Slide show in class - Structural hazards in buildings
- Unsupported first floor
How to fix it? - Cross bracing, shear walls
- Unreinforced masonry (URM)
- Structural discontinuities
- change in building materials from one floor to another
- change in height of abutments
- change in width of building from one floor to another
- Extra credit possibility