And most of the information geologists are using comes from investigating the earthquakes around the Geysers geothermal plan in California.
The conclusion was that removing material from underground and not replacing it with supporting structure causes subsidence, and depending on the structure, punctuated subsidence which is basically code for an earthquake.
Draining aquifers has a similar effect although the rate at which an aquifier is drained is less noticeable.
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Old news. A couple weeks ago there was a magnitude 4.8 near San Antonio, TX caused by fracking[1].
[1]:http://www.woai.com/news/local/story/Could-fracking-be-at-fa...
And most of the information geologists are using comes from investigating the earthquakes around the Geysers geothermal plan in California.
The conclusion was that removing material from underground and not replacing it with supporting structure causes subsidence, and depending on the structure, punctuated subsidence which is basically code for an earthquake.
Draining aquifers has a similar effect although the rate at which an aquifier is drained is less noticeable.