Induced Earthquakes
Induced Earthquakes
Within the central and eastern United States, the number of earthquakes has increased dramatically over the past few years. Are they natural, or man-made? And what should be done in the future? Read about current research on induced earthquakes due to human activities. Observations, modeling, and hazards.
Overview
Overview
The number of earthquakes in the central U.S. has increased dramatically over the past decade.
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Induced Earthquakes Overview
As part of our work to better understand areas of induced earthquakes, the USGS installs seismometers in areas of increased seismicity, provides hazard estimations, and uses numerical models.
Observational Studies of Induced Earthquakes
In response to sudden changes in seismicity that are potentially induced by human activity, the USGS may deploy temporary seismic stations to better understand the earthquakes. These deployments typically consist of 2-15 seismometers placed in the immediate vicinity of the seismicity.
Numerical Models of the Physics Underpinning Induced Earthquakes
The USGS uses computer simulations to evaluate the physical relationships between fluid injection (or extraction) and earthquakes. We can only indirectly study these relationships using observations, so computer simulations help us gain a better physical understanding for the processes that are most likely causing these earthquakes. Scientists can also use such simulations to understand complex...
Hazard Estimation for Induced Earthquakes
In 2016, 2017, and 2018, the USGS released induced earthquake hazard models. These models forecast the expected strength and frequency of potential ground shaking from future induced and natural earthquakes for a one-year period, based primarily on earthquake data from the previous year. Areas of high induced earthquake hazard were identified in Oklahoma-southern Kansas, the Raton Basin (CO/NM...