Magnitude 3.2 - 67 miles NE of Chalkyitsik

September 7, 2022 20:11:10 AKDT (September 8, 2022 04:11:10 UTC)
67.5181°N 142.5643°W    Depth 0.0 miles (0 km)

Tectonic Setting of the Brooks Range

Seismicity in the Brooks Range is characterized by intraplate earthquakes associated with mountain building and crustal reorganization. A broad earthquake band extends from northeast of the Brooks Range toward the Beaufort Sea. Earthquake source mechanisms comprise a mixture of strike-slip and normal faulting events, indicative of north-northwest compression and northeast extension. Together with the North Slope, this seismic zone produces a few magnitude 4-5 earthquakes per year.

Contributed by:
1Alaska Earthquake Center
2USGS National Earthquake Information Center
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