It vibrates every half minute! There have been more than 1,400 strong earthquakes and small earthquakes in California.

　　CCTV News:Following the earthquake with a magnitude of 6.4 on the 4th, a strong earthquake with a magnitude of 7.1 occurred in southern California on the evening of 5th local time. At present, some areas affected by the earthquake have declared a state of emergency.

　　According to CNN, citing experts from the US Geological Survey, there have been "thousands of earthquakes of different levels" in southern California since the earthquake with a magnitude of 6.4 on the 4th. To put it mildly, it is almost "one earthquake every minute or even every half minute".

　　The latest forecast of the US Geological Survey also shows that in the coming week, the probability of an earthquake of magnitude 6 or above in southern California is 27%, and the aftershock of magnitude 5 or above is more likely — — The probability is as high as 96%.

　　Seismologists say that under normal circumstances, after a strong earthquake, the magnitude of aftershocks will gradually decrease, and the situation that the magnitude of aftershocks on the 5 th in southern California is higher than that of the first earthquake on the 4 th "has a probability of only 5%".

　　The magnitude of these two strong earthquakes reached 6.4 and 7.1 respectively, which caused some roads to crack, power supply to be interrupted, water pipes to burst and houses to be displaced in the epicenter area, but no casualties were caused. Why did such a strong earthquake not cause too much damage?

　　According to American seismologists, the earthquakes from 4th to 5th were "considerable in energy". The intensity of the two earthquakes reached 8 and 9 respectively, and more than 1,400 small-scale earthquakes occurred during the two earthquakes.

　　Fortunately, the epicentre locations of these two earthquakes are basically the same, both of which are located in deserted mountainous areas, far away from densely populated residential areas, and the nearest major town is Lester, Riziq, about 20 kilometers away from the epicentre.

　　According to the live video and oral experience of local residents in Leicester, Riziq, when the earthquake struck, the shaking amplitude was not particularly large, which lasted for about 30 seconds to 40 seconds. Most of the supermarket shelves did not collapse, but the goods on the shelves were scattered all over the floor. After the 5 th earthquake, the local fire department also confirmed that no houses collapsed after inspection. The most serious building loss was only cracks in the wall.