Ridgecrest Faults Increasingly Sensitive to Solid Earth Tides Before Earthquakes

USGS Ridgecrest seismic station

20 April 2023–Faults in the Ridgecrest, California area were very sensitive to solid earth tidal stresses in the year and a half before the July 2019 Ridgecrest earthquake sequence, researchers reported at the Seismological Society of America (SSA)’s 2023 Annual Meeting. “The signal of tidal modulation becomes extremely strong” after … Continue Reading »

Earthquake Potential of Hydraulic Fracturing Wells Not Related to Higher Injection Rates

HF wells in Texas

18 April 2023–Analyzing hydraulic fracturing (HF) wells in Texas, Oklahoma, New Mexico and West Canada, researchers found that the average daily injection rates and the total injected volumes are not a crucial factor in determining whether a stimulation will trigger nearby earthquakes. As Iason Grigoratos of ETH Zürich and colleagues … Continue Reading »