Parameter Tree:
EARTH SCIENCE SERVICES > ENVIRONMENTAL ADVISORIES > GEOLOGICAL ADVISORIES > EARTHQUAKES

Definition:
A sudden motion or trembling in the Earth caused by the abrupt release of
slowly accumulated strain in the Earth's lithosphere.

An Earthquake Advisory may report on earthquakes occurring in a particular
region and define areas most vulnerable to earthquake damage.


Reference:
Adapted from Jackson, Julia A. (1997) Glossary of Geology, 4th Edition.
Alexandria, VA: American Geological Institute, 769 p.


For examples and further explanation:

http://earthquake.usgs.gov/

http://earthquake.usgs.gov/hazards/probability.html