Induced Earthquakes Induced quakes are caused by human activity, like tunnel construction, filling reservoirs and implementing geothermal or fracking projects | Consequently, they are usually only felt in the vicinity of the hypocentre |
---|---|
The resulting waves of seismic energy propagate through the ground and over its surface, causing the shaking we perceive as earthquakes |
Volcanic Earthquakes Volcanic quakes are associated with active volcanism.
6They are generally not as powerful as tectonic quakes and often occur relatively near the surface | They are generally not as powerful as tectonic quakes and often occur relatively near the surface |
---|---|
Volcanic Earthquakes Volcanic quakes are associated with active volcanism | The continuous motion of tectonic plates causes a steady build-up of pressure in the rock strata on both sides of a fault until the stress is sufficiently great that it is released in a sudden, jerky movement |
The continuous motion of tectonic plates causes a steady build-up of pressure in the rock strata on both sides of a fault until the stress is sufficiently great that it is released in a sudden, jerky movement.
22Earthquakes are caused by a sudden release of stress along faults in the earth's crust | Collapse Earthquakes Collapse quakes can be triggered by such phenomena as cave-ins, mostly in karst areas or close to mining facilities, as a result of subsidence |
---|---|
Collapse Earthquakes Collapse quakes can be triggered by such phenomena as cave-ins, mostly in karst areas or close to mining facilities, as a result of subsidence |