On-Line Earthquakes Exercise
I.
Shaking Maps
1. Visit the Association of Bay Area
Governments (ABAG) to view a
shaking intensity map for
http://www.abag.ca.gov/bayarea/eqmaps/pickcity.html
Choose "Entire Bay
Area" and click on "view map"
a. For this earthquake, where in the Bay Area did IX-Violent and X-Very
Violent
b. Why do you suppose the
soils along the Bay were likely to intensify the ground shaking?
2.
Go back to http://www.abag.ca.gov/bayarea/eqmaps/pickcity.html
Pick the city
in which you live and select "North +
a.
What level of shaking would you expect in
your neighborhood if a magnitude 6.9
Earthquake was to occur on the
b. What doers
the Modified Mercalli Intensity Scale measure?
c. Based
on the attached summary, describe the damage that your neighborhood would
experience
II.
Make Your Own Earthquake
Go
to http://tlc.discovery.com/convergence/quakes/interactives/makeaquake.html
1.
Choose the following conditions and make an earthquake.
Ground;
Stable Preparation: Reinforced
Material
Magnitude: Quake (5.0-6.9)
Describe
what happens:
2.
Keeping Preparation and Magnitude the same, make an earthquake on loose,
gravelly soil
Ground:
Loose Preparation:
Reinforced Material
Magnitude: Quake (5.0-6.9)
Describe
what happens:
Based
on what you have observed, how does ground type affect damage?
3.
Your company's headquarters is built in a coastal area.
What type of construction is needed
to keep your building standing upright during a "Superquake"?