Magnitude 1.8 - 40 miles N of Arctic Village
August 5, 2022 05:53:16 AKDT (August 5, 2022 13:53:16 UTC)
68.6674°N 146.068°W Depth 13.5 miles (21 km)
This event has been reviewed by a seismologist
- 70 miles (113 km) E of Pump Station #3
- 82 miles (132 km) SE of Pump Station #2
- 85 miles (137 km) E of Pump Station #4
- 115 miles (186 km) N of Venetie
- 117 miles (189 km) SW of Kaktovik
- 120 miles (194 km) SE of Deadhorse
- 123 miles (199 km) SE of Prudhoe Bay
- 126 miles (204 km) SE of Pump Station #1
- 136 miles (220 km) NE of Wiseman
- 145 miles (235 km) NE of Coldfoot
- 147 miles (238 km) N of Fort Yukon
- 268 miles (434 km) N of Fairbanks
- Magnitude type: Ml
- Event type: earthquake
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. A magnitude 6.4 earthquake on August 12, 2018 located 43 miles (69 km) south of Kaktovik was the largest earthquake ever recorded north of the Brooks Range. It produced an energetic aftershock sequence that continues to this day. In 2019, a vigorous swarm sequence began in the Purcell Mountains. More than 9,000 earthquakes have been recorded as part of this swarm through the end of 2021, including five earthquakes with magnitudes larger than 5. At present, this swarm continues, though at a decreased activity level.
