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Earthquake Science Center

The Earthquake Science Center has been the flagship research center of the USGS in the western United States for more than 50 years. It is the largest USGS research center in the West and houses extensive laboratories, scientific infrastructure, and research facilities.

News

Ozette Lake: A natural seismograph along the northern Cascadia Subduction Zone (Video)

Ozette Lake: A natural seismograph along the northern Cascadia Subduction Zone (Video)

Earthquake swarms in California: What’s the difference between magmatic and tectonic? 

Earthquake swarms in California: What’s the difference between magmatic and tectonic? 

Even small lakes can tell big earthquake stories in the Yellowstone region

Even small lakes can tell big earthquake stories in the Yellowstone region

Publications

Compact seismicity bursts have different characteristics from regional seismicity Compact seismicity bursts have different characteristics from regional seismicity

Earthquakes tend to cluster, developing into sequences driven by stress perturbations and transient fault-zone processes. Depending on the driving process, earthquake sequences show differing behaviors. This variability challenges our ability to observe or distinguish these driving processes in high resolution. Here we systematically identify seismicity bursts throughout southern...
Authors
Nicolas DeSalvio, Wenyuan Fan, Andrew J. Barbour, Jeanne L. Hardebeck

Constraining source and path effects of large magnitude earthquakes using ground motion simulations Constraining source and path effects of large magnitude earthquakes using ground motion simulations

The purpose of this study is to use ground‐motion simulations to investigate ways in which source and path effects for large‐magnitude earthquakes can be represented in nonergodic ground‐motion models (GMMs). To achieve this, we designed a ground‐motion study in the San Francisco Bay Area that includes earthquakes with a broad range of magnitudes distributed uniformly on a fault plane...
Authors
Xiaofeng Meng, Robert Graves, Christine A Goulet
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