Earthquakes and Faults
An earthquake is the vibration of earth, produced by a rapid release of energy. This energy radiates in all directions from its source, the focus, in the form of waves. The focus of an earthquake is located at depth. The surface location directly above it is called the epicenter.
The tremendous energy released by atomic explosions or by volcanic eruptions can produce an earthquake, but these events are comparatively weak and infrequent. Ample evidence exists that Earth is not a static planet. Scientists have found places where forces have elevated sections of crust and evidence of extensive subsidence.These vertical displacement, offsets in fence lines, roads, and other structures indicate that horizontal movement associated with large fractures in the earth called faults.
The motion along faults can be explained by plate tectonics theory.Mobile plates interact with neighboring plates, stratining and deforming the rocks at their edges. It is alog faults associated with plate boundaries that most earthquakes occur.
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faults and faulting
However, some faults only have large earthquakes once in thousands of years, and we need to evaluate carefully their hazard potential. Reactivated faults form when movement along
From: http://eqseis.geosc.psu.edu/~cammon/HTML/Classes/IntroQuakes/Notes/faults.html
earthquakes
The California Geological Survey studies earthquakes to help Californians plan and build Faults that represent a hazard of surface rupture are included in Alquist-Priolo
From: http://www.consrv.ca.gov/cgs/geologic_hazards/earthquakes/Pages/index.aspx
faqs earthquakes faults plate tectonics earth structure
USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards
From: http://earthquake.usgs.gov/learn/faq/?categoryID=1
earthquake wikipedia the free encyclopedia
Many earthquakes are caused by movement on faults that have components of both dip-slip and strike-slip; this is known as oblique slip. Earthquakes away from plate boundaries
From: http://en.wikipedia.org/wiki/Earthquake
earthquakes amp; earth's interior
Earthquakes can be generated by bomb blasts, volcanic eruptions, and sudden slippage along faults. Earthquakes are definitely a geologic hazard for those living in
From: http://www.tulane.edu/~sanelson/geol111/earthint.htm
faults and earthquakes
Faults and Earthquakes. Steven Dutch, Natural and Applied Sciences, University of Wisconsin - Green Bay First-time Visitors: Please visit Site Map and Disclaimer.
From: http://www.uwgb.edu/dutchs/earthsc202notes/quakes.htm
www links for earthquakes and faults
Earthquakes and Faults. California seismic hazard zones red=extreme hazard through to blue=lo hazard Map from CDMG Report DMG OFR 96-08 . PBS Savage Earth: Animations and Explanations
From: http://lpc1.clpccd.cc.ca.us/lpc/hanna/quakelinks.htm
earthquakes and faults putting down roots in earthquake country
Epicenter, hypocenter, aftershock, foreshock, fault, fault plane, seismograph, P-waves, magnitude, intensity, peak acceleration, amplification
From: http://www.earthquakecountry.info/roots/basics.html
faults and earthquakes
Take-Away Points . Earthquakes generate waves that travel through the earth; Earthquakes occur when rocks slip along faults; Faults are classified by the kinds of movement
From: http://www.uwgb.edu/DutchS/EarthSC202PowerPoint/Faults%20and%20Earthquakes.ppt
fault geology wikipedia the free encyclopedia
Dip-slip faults can be sub-classified into the types "reverse" and "normal". Investigating Earthquakes through Regional Seismicity. Southern California Earthquake Center
From: http://en.wikipedia.org/wiki/Earthquake_fault
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