Harris, Ruth A. U.S. Geological Survey, Menlo Park, California.
- Links to Primary Literature
- Additional Readings
Since the early 1900s there have been documented cases of humans influencing the occurrence of earthquakes by gold and coal mining, fluid injection and withdrawal, and reservoir impoundment. Famous examples include the magnitude-5 earthquakes in the Denver, CO, area in the 1960s, which were caused by the injection of hazardous waste; and two earthquakes associated with reservoir loading, the magnitude-6.5 earthquake in Koyna, India, in 1967 and the magnitude-5.3 earthquake at Aswan Dam on the Nile River in Egypt in 1981. The Koyna earthquake killed 200 people. Near Reading, PA, a magnitude-4.6 earthquake in 1994 caused more than $2 million in damage; this earthquake, in a setting where tectonic activity rarely produces earthquakes, was caused by quarry unloading. Human-induced earthquakes are best detected in regions where the Earth's strain rates are quite low and therefore the earthquakes stand out in contrast to the very low expected number of events. Scientists develop mathematical models of stresses in the earth generated by human activity and correlate the stresses with the location and time of the subsequent earthquakes.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Its dedicated editorial team is led by Sagan Award winner John Rennie. Contributors include more than 9000 highly qualified scientists and 42 Nobel Prize winners.
MORE THAN 8500 articles and Research Reviews covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 17,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information