Southwestern Yukon magnitude 5.2 earthquake (1:16 AM, 8 January 2022)

James St. John
recent  |  interesting  |  random  |  favorites  |  contacts  |  sets  |  tags:  
Southwestern Yukon magnitude 5.2 earthquake (1:16 AM, 8 January 2022)
Southwestern Yukon magnitude 5.2 earthquake (1:16 AM, 8 January 2022)

Left: Samovar Hills seismic station, Alaska
Middle: Pinnacle seismic station, Alaska
Right: Cirque seismic station in the eastern Chugach Mountains, Wrangell-St. Elias National Park, Alaska
-----------------------------------------------
The prominent noise on these southeastern Alaska seismograms is from a magnitude 5.2 earthquake that hit in southwestern Yukon, near the Canada-Alaska border. The quake occurred at 1:16 AM, local time, on 8 January 2022. The hypocenter was between 25 and 30 kilometers deep. Shaking resulted from oblique movement along a northeast-southwest striking fault or a WNW-ESE striking fault.

See info. at:
earthquake.usgs.gov/earthquakes/eventpage/us7000ga56/exec...
--------------------------------
An earthquake is a natural shaking or vibrating of the Earth caused by sudden fault movement and a rapid release of energy. Earthquake activity is called "seismicity". The study of earthquakes is called "seismology". The actual underground location of an earthquake is the hypocenter, or focus. The site at the Earth's surface, directly above the hypocenter, is the epicenter. Minor earthquakes may occur before a major event - such small quakes are called foreshocks. Minor to major quakes after a major event are aftershocks.

Most earthquakes occur at or near tectonic plate boundaries, such as subduction zones, mid-ocean ridges, collision zones, and transform plate boundaries. They also occur at hotspots - large subsurface mantle plumes (Examples: Hawaii, Yellowstone, Iceland, Afar).

Earthquakes generate four types of shock waves: P-waves, S-waves, Love waves, and Rayleigh waves. P-waves and S-waves are body waves - they travel through solid rocks. Love waves and Rayleigh waves travel only at the surface - they are surface waves. P-waves are push-pull waves that travel quickly and cause little damage. S-waves are up-and-down waves (like flicking a rope) that travel slowly and cause significant damage. Love waves are side-to-side surface waves, like a slithering snake. Rayleigh waves are rotational surface waves, somewhat like ripples from tossing a pebble into a pond.

Earthquakes are associated with many specific hazards, such as ground shaking, ground rupturing, subsidence (sinking), uplift (rising), tsunamis, landslides, fires, and liquefaction.

Some famous major earthquakes in history include: Shensi, China in 1556; Lisbon, Portugal in 1755; New Madrid, Missouri in 1811-1812; San Francisco, California in 1906; Anchorage, Alaska in 1964; and Loma Prieta, California in 1989.

Attribution Some rights reserved
Taken on: January 8, 2022
Tags: Everybody's photos tagged with Yukon Yukon Everybody's photos tagged with Canada Canada Everybody's photos tagged with magnitude magnitude more » Everybody's photos tagged with 5.2 5.2 Everybody's photos tagged with earthquake earthquake Everybody's photos tagged with earthquakes earthquakes Everybody's photos tagged with quake quake Everybody's photos tagged with quakes quakes Everybody's photos tagged with 8 8 Everybody's photos tagged with January January Everybody's photos tagged with 2022 2022 Everybody's photos tagged with seismogram seismogram Everybody's photos tagged with seismograms seismograms « less
Sets appears in:   • 2022 Earthquakes    • Canada Earthquakes    more » • Earthquakes    « less
Stats: 1,556 views