How the February 2023 Türkiye Earthquakes Ruptured and Produced Damaging Shaking

map of historic and Feb 2023 Turkiye earthquakes

23 May 2023–Three studies now published in the open-access journal The Seismic Record offer an initial look at the February 6, 2023 earthquakes in south-central Türkiye and northwestern Syria, including how, where, and how fast the earthquakes ruptured and how they combined as a “devastating doublet” to produce damaging ground … Continue Reading »

At Work: Simona Gabrielli

Simona Gabrielli at Mount St. Helens

22 May 2023–Simona Gabrielli studies seismic attenuation, or what happens when a seismic wave interacts with its surrounding medium. She compares it to how a stone dropped into a pond sends ripples through the water, and the ripples change direction depending on what they meet as they move across the … Continue Reading »

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 »