In the US state of California have been numerous cases of ground surface deformation

numerous cases Residents of San Francisco and Palm Springs was seriously frightened numerous deformations of the earth’s surface in various parts of the city located in the state of California. The local population is concerned that this may be a harbinger of an underground disaster.

It is worth noting that concerned not only the population, but this concern is shared by seismologists. California has never been a safe place. Not so long ago, April 18, 1906 in the San Francisco area, an earthquake of magnitude 7.8 on the Richter scale, which virtually erased the city to the ground. Now there is a likelihood of recurrence of those tragic events.

Sensors surface deformation changes recorded by 19 of the 23 established in the San Francisco sensors (green markers).

Scientists note amplification of seismic activity around the world, especially noticeable on the Pacific Ring of Fire, which also marks an increase in volcanic activity.

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