Humans cause many earthquakes and they all have to do with water. The worst such a quake was a 7,9.
Here are some causes:
1.) "Fracking":
Fracking causes a lot of slop and this water is being pumped into the earth with much pressure (grouting). The caused quakes are not as worse as natural ones but they take place much more close to the surface.
2.) Geothermal power plants:
Also geothermal power plants are grouting water into the earth, cold water.
3. Large dams:
Large dams create large lakes. The more water the lake carries, the more pressure occurs.
Here´s more:
Induced seismicity - Wikipedia
Increase of earthquakes in the US, mostly caused by Fracking:
Here are some causes:
1.) "Fracking":
Fracking causes a lot of slop and this water is being pumped into the earth with much pressure (grouting). The caused quakes are not as worse as natural ones but they take place much more close to the surface.
2.) Geothermal power plants:
Also geothermal power plants are grouting water into the earth, cold water.
3. Large dams:
Large dams create large lakes. The more water the lake carries, the more pressure occurs.
Here´s more:
Induced seismicity - Wikipedia
Increase of earthquakes in the US, mostly caused by Fracking:
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