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earthquakes

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Tuesday, March 7th, 2017

New USGS Maps Identify Potential Ground-Shaking Hazards in 2017

New U.S. Geological Survey (USGS) maps identify potential ground-shaking hazards in 2017 from human-induced and natural earthquakes in the central and eastern United States (CEUS). This is the second consecutive year both types of hazards are forecasted, as previous USGS maps only identified hazards from natural earthquakes. This research recently was published in Seismological Research

Tuesday, December 13th, 2016

USGS Report Cites Fluid Injection as Cause for Increased Earthquakes

The central United States has undergone a dramatic increase in seismicity during the last six years. From 1973-2008, there was an average of 24 earthquakes of magnitude 3 and larger per year. From 2009-2014, the rate steadily increased, averaging 193 per year and peaking in 2014 with 688 earthquakes. So far in 2015, there have

Tuesday, March 29th, 2016

Induced Earthquakes Raise Chances of Damaging Shaking in 2016

For the first time, new USGS maps identify potential ground-shaking hazards from both human-induced and natural earthquakes. In the past, USGS maps only identified natural earthquake hazards. This is also the first one-year outlook for the nation’s earthquake hazards, and is a supplement to existing USGS assessments that provide a 50-year forecast The report shows