Several tremors shake the Salton Sea area, but respected specialist explains that the swarm was about 20 kilometers away from the San Andrés fault
Photo: Wikimedia Commons
Saturday, December 28
Second earthquake swarm in less than a week in Imperial County includes 4.3 quake
The tremors were localized 13 kilometres southwest of Niland and about 15 of Calipatria, in Imperial County. The previous Saturday, just a few miles away, just south of the Salton Sea.
This Friday, the tremors began to be felt at 9: 22 pm with one of 2.6, followed by two of magnitude 3.9. The strongest (4.3) arrived at 9: 39 pm with a depth of 2.2 miles .
Then there were several tremors between 3.2 and 3.7, up to one of magnitude 4.1 at 9: 49 pm. After lowering the intensity of other movements, there was one of 3.9 at 10: 55 pm. No damage was reported.
Dr. Lucy Jones, one of the most respected earthquake specialists, said the swarm was located in the so-called Brawley Seismic Zone, where there are usually seismic swarms, very close to the San Andrés fault but not yet in range to activate a major earthquake .
This assumes that if the swarm had been some 15 kilometers further north then there would be possibilities of important activity with the dreaded San Andrés fault .
Tonight’s swarm is closer to the San Andreas, but still not in “triggering range”. All foreshocks in California have been within 10 km of their mainshock and most were within 3 km. This is still 22 + km away
– Dr. Lucy Jones (@DrLucyJones) June 12, 7861
“All aftershocks in California have been within 07 kms of the strongest and most tremor they were within 3 kms. This is still more than 20 kms away “.
La Falla de San Andrés ends at the top of the Salton Sea.
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