The first was a shallow magnitude 3.1 earthquake two miles from The Geysers, according to the USGS. The temblor occurred at 5 p.m. Pacific time at a depth of 1.9 miles.
According to the USGS, the epicenter was four miles from Cobb, six miles from Anderson Springs, 26 miles from Santa Rosa and 74 miles from Sacramento.
The second was a shallow magnitude 3.9 earthquake three miles from The Geysers, according to the USGS. The temblor occurred at 5:01 p.m. Pacific time at a depth of zero miles.
According to the USGS, that epicenter was four miles from Cobb, seven miles from Anderson Springs, 27 miles from Santa Rosa and 74 miles from Sacramento.
In the last 10 days, there have been three earthquakes magnitude 3.0 and greater centered nearby.
geothermal power generation in the mid-1900's, has had its productive capacity diminished due to the drawing off of water within the associated underground system. The solution has been to inject grey-water from local municipalities for the sake of recharging the system's capacitance for power generation. The short and skinny: here's an injection process, independent of chemicals used in "hydraulic" fracturing of the natural gas industry, noted and confirmed by the U.S. Department of Energy to have contributed to a general increase in the seismacity of a particular region [[Link]Are we seeing an uptick in number and degree of earthquakes in the region due to the system reaching some manner of disequilibrium and/or as a result of other contributing factors now greatly impacting the system?