Year: 2025
Type: article
Abstract: Analysis of 2 weeks of continuous post‐seismic shaking after the 2019 M7.1 Ridgecrest, CA earthquake sequence using 4 nearby borehole seismometers reveals that continuous ground motions decay as Omori's law in time and follow the Gutenberg‐Richter distribution in logarithmic amplitude. The measured temporal decay in amplitudes agrees with predictions of the rate‐and‐state framework and indicates shaking amplitudes are proportional to the velocity of afterslip. Our ground motion‐based statistical framework provides a basis to forecast shaking intensity in the minutes to hours after a large earthquake.
Source: Geophysical Research Letters
DOI: 10.1029/2025gl116673
Institutions: United States Geological Survey, Earthquake Science Center
Language: English
Subfield: Geophysics
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,190
Funder: U.S. Geological Survey
OpenAlex ID: W4414596302