The earthquake in Alaska in 2018 is a major earthquake of magnitude 7.0, which occurred on November 30 at 8 hours 29 minutes local time (17:29:28 UTC ) [1] . The epicenter was located near the military base of Elmendorf-Richardson , 16 km north of the largest city in the state of Anchorage . The hypocenter was at a depth of 40.9 km. The second push of magnetic 5.7 occurred after 6 minutes, 4.0 km north-north-west of the city [2] [3]
| Alaska earthquake in November 2010 | |
|---|---|
 Earthquake epicenter | |
| date and time | 17:29:28 November 30, 2018 ( UTC ) |
| Magnitude | 7.0 M w |
| Depth hypocenter | 40.9 km |
| Location epicenter | |
| Affected countries (regions) |  USA |
| Injured | not |
Content
Tectonics
South Alaska lies on the eastern edge of the Aleutian Trench , where the North American Plate creeps onto the Pacific Plate . Near Anchorage, the slabs shift at a rate of 57 mm per year [1] . Strong earthquakes have already occurred in this region, including mega earthquakes. The Alaskan 964 magnitude 9.2 sting was the strongest in the history of North America and the second strongest ever recorded. Although Alaska earthquakes occur frequently, they are usually located in the sea [4] .
Repeated pushes
During the day, more than 80 repeated shocks were recorded, [5] , of which at least three were of a magnitude greater than 5.0 [6] .
Implications
The earthquake caused severe damage to several buildings and a road junction near Anchorage International Airport [7] . There were no dead [8] .
Four airports were closed for boarding, including Anchorage Airport, Adak Airport , Merrill-Field Airport and Elmendorf-Richardson Airport.
The infrastructure of Anchorage [9] , including the road, multi-tiered road junctions, and traffic lights [10], has suffered greatly. The work of the Alaskan railway was also discontinued due to numerous damage to the operations centers and the unknown state of the railway network [11] .
Notes
- ↑ 1 2 M 7.0 - 13km N of Anchorage, Alaska . United States Geological Survey . The appeal date is November 30, 2018.
- ↑ Powerful quakes buckle Alaska roads, trigger tsunami warning , Associated Press (November 30, 2018).
- 5. M 5.7 - 4km NNW of Anchorage, Alaska 2018-11-30 17:35:37 (UTC) (Eng.) . earthquake.usgs.gov . The appeal date is November 30, 2018.
- ↑ Alaska earthquake: Anchorage rocked by 7.0 tremors , BBC News (November 30, 2018). The appeal date is November 30, 2018.
- ↑ Horazdovsky, Kortnie . More than 80 aftershocks have hit Southcentral Alaska since Friday morning's quake (English) .
- ↑ 2018 Anchorage Earthquake . United States Geological Survey (November 30, 2018). The appeal date is December 6, 2018.
- ↑ Large earthquake strikes Southcentral Alaska; tsunami warnings issued , Anchorage Daily News (November 30, 2018).
- ↑ Huge earthquake rocks buildings in Anchorage; tsunami warning issued (eng.) , CBS News (November 30, 2018).
- ↑ CNN, Ray Sanchez, Amanda Watts and Dakin Andone . 7.0 Alaska quake damages roads, brings scenes of chaos , CNN .
- Major Major damage to Anchorage area after severe 7.0-magnitude earthquake in Alaska , Washington Post (November 30, 2018). The appeal date is December 1, 2018.
- Latest The Latest: Scientists describe the where quake happened , AP NEWS (November 30, 2018).