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8 September 2017, Chiapas, Mexico Earthquake

The 8 September 2017 Mexico earthquake (M 8.2) occurred near the Middle America Trench, where the Cocos and North American plates converge. The normal faulting, intermediate depth earthquake occurred at a depth of 50.1 km (USGS), suggesting an intraplate event.


Figure 1: The 8 September 2017, Chiapas, Mexico earthquake was recorded by the Transportable Array (red inverted triangles) in Alaska.


Figure 2: Energy release as a function of time (upper left corner) for this event. Warm and cold colors represent high and low amplitude energy release, respectively. The white star is the epicenter of the event, the white line is the coastline of Mexico, and the toothed line shows the subducting Cocos plate.




Figure 3: Seismograms (North, East, vertical from top to bottom) recorded 23.1° from the event at the TUC GSN station in Tucson, Arizona.

Contact: hlkehoe@email.arizona.edu