At 1:47:47 (UTC) on September 8, 2021, a magnitude 7.0 earthquake occurred near Acapulco, Mexico. The earthquake is associated with the plate boundary, where the oceanic Cocos plate collides with and subducts beneath Mexico. Slip occurred with a reverse motion and centered at a depth of 20 kilometers, producing a local tsunami warning but no warning for other regions in the Pacific.
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The ShakeAlert earthquake early warning system is much more than the alert message on your phone. Detecting earthquakes, characterizing them, and determining the appropriate warning area takes a tremendous amount of infrastructure. With the completion of a recent Cooperative Agreement with the USGS, UNAVCO has improved West Coast geodetic infrastructure so it can be fully integrated into ShakeAlert.
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Calculate tectonic plate motion at any location on Earth using one or more plate motion models. The Plate Motion Calculator is a tool that calculates rigid plate motions. Computations can be made at one or more specified locations on Earth.
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GAGE Facility The Geodetic Facility for the Advancement of Geoscience (GAGE) is one of the National Science Foundation’s two premier geophysical facilities in support of geoscience and geoscience education.